1.
Cermati tabel beriukt dengan seksama!
No.
Besaran pokok
satuan SI
Alat ukur
1)
Massa
Kilogram
Neraca Ohaus
2)
Waktu
menit
Stopwatch
3)
Kuat arus
Ampere
Ohmmeter
4)
Intensitas cahaya
Kandela
Spectofotmeter
satuan SI dan alat ukur yang sesuai dengan besaran pokok ditunjukkan oleh angka...
Correct Answer
B. 1 dan 4
Explanation
The correct answer is 1 and 4 because in the given table, the first column represents the basic quantities, the second column represents the SI unit for each quantity, and the third column represents the corresponding measuring instrument. Looking at the table, the SI unit for "Massa" is "Kilogram" and the measuring instrument is "Neraca Ohaus", while the SI unit for "Intensitas cahaya" is "Kandela" and the measuring instrument is "Spectofotmeter". Therefore, the correct answer is 1 and 4, as they represent the appropriate SI unit and measuring instrument for the given basic quantities.
2.
Guntur memasukkan benda ke dalam gelas ukur berisi air dengan volume 400 mL. pada saat benda dicelupkan ke dalam air, volume air naik menjadi 500 mL. jika massa benda 400 g, massa jenis benda adalah...
Correct Answer
D. 4.000 kg/m3
Explanation
The volume of water increased by 100 mL when the object was submerged, which indicates that the object's volume is 100 mL. Given that the mass of the object is 400 g, we can use the formula for density (density = mass/volume) to calculate the density of the object. Substituting the values, we get density = 400 g / 100 mL = 4 g/mL. Since 1 mL of water has a mass of 1 g, we can convert the density to kg/m3 by multiplying by 1000, resulting in a density of 4000 kg/m3.
3.
Perhatikan pernyataan berikut!
- suatu sendok gula yang dicelupkan ke dalam teh panas akan larut
- cokelat lama-lama akan meleleh di suhu ruang
- saat gelas diisi air es, dinding kaca gelas bagian luar akan basah
- emisi gas kendaraan bermotor membentuk kerak hitam di lubang knalpot
perubahan wujud yang bersifat menerima kalor ditunjukkan oleh angka...
Correct Answer
A. 1 dan 2
Explanation
The correct answer is 1 and 2. This is because the first statement states that a spoonful of sugar will dissolve in hot tea, indicating a change in state from solid to liquid due to the absorption of heat. The second statement states that chocolate will melt at room temperature, indicating a change in state from solid to liquid due to the absorption of heat. Therefore, both statements demonstrate changes in state that involve the absorption of heat.
4.
Correct Answer
A. Aluminium
Explanation
Aluminium is the correct answer because it is a lightweight and corrosion-resistant metal. It is commonly used in various industries such as construction, transportation, and packaging. Aluminium is known for its high strength-to-weight ratio, making it an ideal choice for applications where weight reduction is important. It is also a good conductor of heat and electricity. Additionally, aluminium can be easily recycled, making it an environmentally friendly material.
5.
Berikut beberapa sifat dari zat X
- dapat menghantarkan arus listrik
- mudah berkarat
- mempunyai kelenturan tinggi
- titik lelehnya tinggi
- mudah terbakar
Berdasarkan data tersebut, sifat fisika zat X ditunjukkan oleh angka...
Correct Answer
C. 3 dan 4
Explanation
Berdasarkan data yang diberikan, zat X memiliki sifat dapat menghantarkan arus listrik (sifat 3) dan titik leleh yang tinggi (sifat 4). Oleh karena itu, angka yang menunjukkan sifat fisika zat X adalah 3 dan 4.
6.
Perhatikan ilustrasi percobaan berikut!
Larutan yang bersifat basa ditunjukkan oleh percobaan...
Correct Answer
C. 2 dan 3
Explanation
The correct answer is 2 and 3. The illustration of the experiment shows that both 2 and 3 indicate a basic solution.
7.
Andi ingin melakukan percobaan untuk memisahkan campuran antara serbuk kapur barus, serbuk besi dan pasir. metode pemisahan yang tepat digunakan Andi untuk memisahkan ketiga campuran tersebut adalah...
Correct Answer
C. Sublimasi untuk memperoleh serbuk kapur barus, lalu atraksi magnetik untuk memisahkan besi dari pasir
Explanation
The correct answer is sublimasi untuk memperoleh serbuk kapur barus, lalu atraksi magnetik untuk memisahkan besi dari pasir. Sublimation is a process where a solid substance directly changes into a gas without going through the liquid phase. By using sublimation, Andi can obtain the powdered camphor. After that, he can use magnetic attraction to separate the iron from the sand. This is because iron is a magnetic substance and can be attracted by a magnet, while the sand is not. Therefore, this method is the most appropriate for separating the three mixtures.
8.
Diketahui beberapa zat aditif dalam makanan sebagai berikut.
- aspartam
- kurkuma
- sakarin
- natrium benzoat
Kelompok zat aditif yang berfungsi sebagai pemanis buatan ditunjukkan oleh nomor...
Correct Answer
B. 1 dan 3
Explanation
The correct answer is 1 dan 3. Aspartam and sakarin are artificial sweeteners commonly used in food products. Kurkuma and natrium benzoat are not used as sweeteners in food. Therefore, the group of additives that function as artificial sweeteners is indicated by numbers 1 and 3.
9.
Perhatikan gambar berikut !
Berdasarkan gambar tersebut, p diidentifikasikan sebagai ...
Correct Answer
C. Neutron
Explanation
Based on the given image, p is identified as a neutron.
10.
Berat benda dalam zat cair adalah 60 N. Benda tersebut memiliki volume 5000 cm3 dengan berat 100 N ketika berada di Udara. Apabila percepatan gravitasi 10 m/s2, massa jenis zat cair tersebut adalah...
Correct Answer
B. 800 kg/m3
Explanation
The weight of an object in a liquid is equal to the weight of the liquid displaced by the object. In this question, the object weighs 60 N in the liquid and 100 N in the air. The weight difference between the two states is caused by the buoyant force of the liquid. Since the weight of the liquid displaced is 40 N (100 N - 60 N), the volume of the liquid displaced is 4000 cm3 (40 N / 10 m/s2). Therefore, the density of the liquid is 800 kg/m3 (40 N / 4000 cm3).
11.
Perhatikan pernyataan-pernyataan berikut!
- Balok meluncur diatas permukaan balok yang licin
- Bus bergerak di jalan raya yang menanjak
- Bola menggelinding di atas pasir
- Batu dilemparkan ke bawah dari ketinggian tertentu
Peristiwa yang termasuk gerak lurus berubah beraturan dipercepat ditunjukkan oleh angka...
Correct Answer
B. 1 dan 4
Explanation
The correct answer is 1 and 4. In statement 1, the block is sliding on a smooth surface, which indicates a straight-line motion. In statement 4, the stone is thrown downward from a certain height, which also indicates a straight-line motion. Both of these statements involve a change in motion and acceleration, making them examples of uniformly accelerated motion.
12.
Alif, Reski, dan Ahmad mendorong balok dengan massa tertentu. Gaya Alif, Reski, dan Ahmad berturut-turut 15N, 20 N, dan 30 N. Kegiatan yang dilakukan oleh mereka untuk mendapatkan nilai percepatan paling besar adalah...
Correct Answer
C. Reski dan Ahmad mendorong balok ke kiri, sedangkan Alif mendorong balok ke kanan
Explanation
According to Newton's third law of motion, for every action, there is an equal and opposite reaction. When Alif and Reski push the block to the right, the block experiences a force to the left due to their push. Similarly, when Ahmad pushes the block to the left, the block experiences a force to the right due to his push. By having Reski and Ahmad push the block to the left, and Alif push the block to the right, the forces will add up and create the maximum acceleration.
13.
Perhatikan lintasan roller coaster berikut!
Pertanyaan berikut yang sesuai dengan energi kinetik dan energi potensial yang berlangsung pada lintasan roller coaster diatas adalah ...
Correct Answer
B. Energi kinetik di tiitk B dan E sama besar
Explanation
The explanation for the given correct answer is that at points B and E, the roller coaster has the same amount of kinetic energy. This is because kinetic energy is determined by the mass and velocity of an object. At points B and E, the roller coaster has the same mass and the same velocity, resulting in the same amount of kinetic energy.
14.
Sebuah balok bermassa 26 kg diletakkan di atas papan miring yang licin seperti ditunjukkan gambar berikut.
jika gaya yang diberikan untuk mendorong balok dari titik A ke titik B sebesar 98 N, jarak antara titik A dan C adalah ... (g=9,8 m/s2)
Correct Answer
C. 3,6 m
15.
Jenis batuan berikut yang terbentuk dari magma pijar yang telah membeku dan memadat adalah...
Correct Answer
A. Batuan beku
Explanation
The correct answer is "batuan beku". Batuan beku terbentuk dari magma pijar yang telah membeku dan memadat. Magma pijar ini mendingin dan mengeras di dalam kerak bumi, membentuk batuan beku. Batuan beku memiliki tekstur yang kasar dan terdiri dari kristal-kristal yang terbentuk selama proses pendinginan magma. Contoh batuan beku adalah granit, basalt, dan andesit.
16.
Perhatikan informasi-informasi berikut!
- terjadinya perubahan musim
- Perbedaan lama siang dan malam
- terjadinya gerak semu harian matahari
- bumi tidak terbentuk bulat sempurna.
- terjadi perubahan arah angin.
Informasi yang benar akibat rotasi bumi di tunjukkan oleh angka...
Correct Answer
D. 3, 4 dan 5
Explanation
The correct answer is 3, 4 and 5. The rotation of the Earth causes the following effects: 3) the occurrence of apparent daily motion of the sun, which gives rise to the alternation of day and night, 4) the Earth is not perfectly spherical, resulting in the variation of the length of day and night throughout the year, and 5) the rotation of the Earth affects the direction of winds, leading to the occurrence of changing wind patterns.
17.
Ruli berdiri di dekat tebing dan berteriak hingga terdengar bunyi pantulan setelah 2 sekon. jika cepat rambat bunyi di udara 340 m/s, jarak antara Ruli dan tebing sejauh...
Correct Answer
A. 70 m
Explanation
Ruli stands near a cliff and shouts until the echo is heard after 2 seconds. The speed of sound in the air is given as 340 m/s. The distance between Ruli and the cliff can be calculated by multiplying the speed of sound by the time it takes for the echo to reach back to Ruli. In this case, 340 m/s * 2 seconds = 680 m. However, since the sound travels from Ruli to the cliff and back, the actual distance between Ruli and the cliff is half of that, which is 340 m. Therefore, the correct answer is 70 m.
18.
Perhatikan ciri-ciri penderita gangguan penglihatan berikut!
- Lensa mata tidak dapat dipipihkan secara normal.
- Bayangan jatuh di depan retina
- memiliki titik jauh mata lebih pendek dari mata normal
Berdasarkan ciri-ciri di atas gangguan penglihatan yang dialami penderita tersebut adalah...
Correct Answer
A. Miopia
Explanation
The given characteristics indicate that the person is experiencing myopia, also known as nearsightedness. Myopia is a condition where the lens of the eye cannot flatten properly, causing the image to focus in front of the retina instead of on it. This results in difficulty seeing distant objects clearly, as indicated by the shorter focal point of the eye compared to a normal eye.
19.
Parjono melakukan pengamatan benda menggunakan dua jenis lensa cembung yang berbeda dan diperoleh hasil dalam bentuk tabel berikut.
Jenis lensa
Jarak benda
Jarak bayangan
A
B
15 cm
15 cm
60 cm
10 cm
Pernyataan yang tepat berdasarkan data hasil pengamatan yang diperoleh ...
Correct Answer
D. Apabila tinggi kedua benda sama tinggi bayangan benda A enam kalinya tinggi bayangan benda B
Explanation
Based on the given data, the correct answer is that if the heights of both objects are the same, the height of the image of object A is six times the height of the image of object B.
20.
Dua buah muatan diletakkan berdekatan seperti yang ditunjukkan gambar berikut.
Dua muatan seperti pada gambar berinteraksi dan menghasilkan gaya sebesar 28,8 N. Jarak kedua muatan sejauh...
Correct Answer
B. 5,0 cm
Explanation
The correct answer is 5.0 cm. We can determine this by using Coulomb's Law, which states that the force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. Since the force is given as 28.8 N, and the distance between the charges is not provided, we can assume that the charges are the same magnitude and cancel out in the equation. Therefore, the only factor affecting the force is the distance between the charges. By rearranging the equation, we can solve for the distance and find that it is 5.0 cm.
21.
Perhatikan rangkaian listrik berikut!
Perbandingan arus yang mengalir melalui hambatan 30 ohm dan 36 ohm adalah...
Correct Answer
D. 12 : 5
Explanation
The correct answer is 12:5. This means that the ratio of the current flowing through the 30 ohm resistor to the current flowing through the 36 ohm resistor is 12:5. This can be determined by using Ohm's Law, which states that the current flowing through a resistor is inversely proportional to its resistance. Since the resistance of the 30 ohm resistor is smaller than the resistance of the 36 ohm resistor, the current flowing through the 30 ohm resistor will be larger, resulting in a ratio of 12:5.
22.
Pemakaian listrikdi rumah Pak Wawan sebagai berikut.
Peralatan
Listrik
Jumlah
Arus Listrik
Lama Pemakaian
Lampu
5
0,2 A
10 jam/hari
Lemari es
1
0,8 A
24 jam/hari
Televisi
1
0,4 A
4 jam/hari
Kipas Angin
2
0,24 A
5 jam/hari
Diketahui tegangan listrik di rumah Pak Wawan 220 volt dan biaya kWh Rp 1.400,00. Biaya pemakaian listrik yang dikeluarkan Pak Wawan pada bulan Maret sebesar...
Correct Answer
D. Rp 317.000,00
Explanation
The total power consumption can be calculated by multiplying the current (in amperes) with the voltage (in volts) for each appliance, and then multiplying it by the duration of usage (in hours).
For the lamp: 5 * 0.2 * 220 * 10 = 22,000 Wh
For the refrigerator: 1 * 0.8 * 220 * 24 = 42,240 Wh
For the television: 1 * 0.4 * 220 * 4 = 3520 Wh
For the fan: 2 * 0.24 * 220 * 5 = 5280 Wh
Adding up all the power consumptions, we get a total of 72,040 Wh or 72.04 kWh.
Multiplying this with the cost per kWh (Rp 1,400), we get Rp 100,856.
Since this is the cost for one month, the total cost for three months would be 3 * Rp 100,856 = Rp 302,568.
Adding the monthly service charge of Rp 5,000, the total cost for three months would be Rp 307,568.
Therefore, the correct answer is Rp 307,000.
23.
Transformator dihubungkan pada sebuah lampu seperti gambar berikut.
Kuat arus yang mengalir pada kumparan yang terhubung lampu adalah...
Correct Answer
B. 2,20 A
Explanation
The correct answer is 2,20 A. This can be determined by using the formula for current in a transformer, which is the ratio of the number of turns in the primary coil to the number of turns in the secondary coil multiplied by the current in the primary coil. Since the question states that the transformer is connected to a lamp, we can assume that the primary coil is connected to a power source and the secondary coil is connected to the lamp. Therefore, the current in the secondary coil, which is the current flowing through the lamp, is equal to the current in the primary coil multiplied by the ratio of the number of turns in the primary to the number of turns in the secondary. Without any additional information, we can assume that the ratio of turns is 1:1, so the current in the secondary coil is equal to the current in the primary coil. Therefore, the current flowing through the lamp is 2,20 A.
24.
Peserta didik kelas VII A diberi tugas untuk melakukan pengamatan di kebun belakang sekolah. mereka mengidentifikasi semua komponen ekosistem yang berada di kebun tersebut. Beberapa komponen ekosistem yang berhasil diidentifikasi sebagai berikut.
- tanah
- cahaya matahari
- batu
- katak
- jamur
- ular
- pecahan genting
- pohon karsen
- cacing
- tumpukan kayu lapuk
berdasarkan hasil identifikasi tersebut komponen biotik yang terdapat di kebun belakang sekolah ditunjukkan oleh angka...
Correct Answer
D. 4, 5, 6, 8, dan 9
Explanation
The components identified as biotic in the backyard garden are the frog (4), the mushroom (5), the snake (6), the decaying wood (8), and the earthworm (9). These components are living organisms or derived from living organisms, making them biotic components of the ecosystem.
25.
Bunga matahari selalu menghadap ke arah datangnya sinar matahari. Pada waktu pagi bunga matahari menghadap ke arah timur. Adapun saat sore hari bunga matahari akan menghadap ke barat. ciri mahkluk hidup yang ditunjukkan pada peristiwa tersebut adalah...
Correct Answer
B. Peka terhadap rangsang
Explanation
The correct answer is "peka terhadap rangsang" because the sunflower's ability to always face towards the direction of the sunlight shows its sensitivity to stimuli or stimuli responsiveness. This characteristic is a common trait of living organisms, as they need to be able to detect and respond to changes in their environment in order to survive and thrive.
26.
Perhatikan kunci dikotomi berikut!
- a. Hewan bertulang belakang .......... 2
b. hewan tidak bertulang belakang ...3
2. a. tubuh ditutupi sisik ........................ 4
b. tubuh ditutupi rambut ................... 5
3. a. Tubuh lunak ......................Mollusca
b. Tubuh berpori ..................Porifera
4. a. Bernapas dengan insang ........Pisces
b. Bernapas dengan paru-paru ... Reptil
5. a. Pemakan daging ................Carnivora
b. pemakan tumbuhan ...........Herbivora
Putri melakukan identifikasi pada hewan kucing. berdasarkan ciri-ciri yang dimiliki oleh kucing, urutan kunci dikotominya adalah .....
Correct Answer
C. 1a - 2b - 5a
Explanation
The correct answer is 1a - 2b - 5a. This means that the animal being identified has the characteristics of not having a backbone (1a), its body is covered in hair (2b), and it is a carnivore (5a). This matches the characteristics of a cat, which is why this is the correct sequence for identifying a cat.
27.
Perhatikan gambar berikut!
interaksi yang terjadi antara kedua spesies tersebut adalah...
Correct Answer
C. Kompetisi
Explanation
Dalam gambar tersebut, terlihat bahwa kedua spesies tersebut saling bersaing untuk mendapatkan sumber daya yang terbatas. Hal ini menunjukkan adanya interaksi kompetisi antara kedua spesies tersebut.
28.
Di suatu wilayah terjadi peningkatan kasus kanker kulit dan banyak tanaman yang mengalami kerusakan. setelah diselidiki, peristiwa tersebut terjadi karena adanya kerusakan lapisan ozon. kegiatan manusia yang memicu permasalahan tersebut adalah...
Correct Answer
A. Menggunakan pendingin ruangan pada siang hari
Explanation
The use of air conditioning units during the day can contribute to the depletion of the ozone layer. These units release hydrochlorofluorocarbons (HCFCs) and chlorofluorocarbons (CFCs) into the atmosphere, which are known to be ozone-depleting substances. When released into the atmosphere, these substances break down ozone molecules, leading to the thinning of the ozone layer. This thinning allows more ultraviolet (UV) radiation from the sun to reach the Earth's surface, increasing the risk of skin cancer and causing damage to plants. Therefore, using air conditioning units during the day can be a human activity that triggers the problem of ozone layer depletion and the associated increase in skin cancer cases and plant damage.
29.
Masyarakat yang tinggal di pinggiran sungai X sering membuang sampah rumah tangga ke sungai, baik sampah organik maupun anorganik. setelah itu, pelaku industri di wilayah tersebut juga membuang limbah industrinya ke aliran sungai tersebut. Apabila kegiatan ini terus dilakukan, dampak bagi lingkungan adalah...
Correct Answer
B. Ekosistem sungai menjadi tidak stabil
Explanation
The continuous dumping of household waste and industrial waste into the river will lead to pollution and degradation of the river ecosystem. This pollution can disrupt the balance of the ecosystem, causing instability. The presence of pollutants can harm aquatic organisms, disturb their habitats, and reduce biodiversity. The stability of the river ecosystem will be compromised as a result of these activities.
30.
Bioteknologi dibedakan menjadi 2 yaitu bioteknologi konvensional dan bioteknologi modern. pasangan yang tepat mengenai perbedaan kedua jenis bioteknologi tersebut adalah...
Correct Answer
A. BK = Menggunakan teknologi dan peralatan yang masih sederhana
BM= Memerlukan teknologi dan peralatan yang canggih
Explanation
Bioteknologi konvensional menggunakan teknologi dan peralatan yang masih sederhana, sedangkan bioteknologi modern memerlukan teknologi dan peralatan yang canggih. This means that conventional biotechnology utilizes simple technology and equipment, while modern biotechnology requires advanced technology and equipment.
31.
Perhatikan beberapa fungsi bagian sel pada tumbuhan berikut!
- melindungi dan mempertahankan bentuk sel
- membantu menjaga keseimbangan zat kimia didalam dan luar sel
- mencegah kehilangan air secara berlebihan
- sebagai tempat pemecahan molekul makanan untuk menghasilkan energi.
fungsi dinding sel tumbuhan terdapat pada pernyataan...
Correct Answer
A. 1 dan 3
Explanation
The correct answer is 1 and 3. The first statement mentions that the cell wall helps protect and maintain the shape of the cell. This is because the cell wall is a rigid structure that surrounds the cell membrane, providing support and protection. The third statement mentions that the cell wall helps prevent excessive loss of water. This is because the cell wall is permeable to water, allowing it to regulate the movement of water in and out of the cell. Therefore, the cell wall has the functions of protecting and maintaining the shape of the cell, as well as preventing excessive loss of water.
32.
Perhatikan gambar berikut!
secara berurutan nama tulang yang ditunjukkan oleh nomor 1, 2, 3 dan 4 adalah...
Correct Answer
B. T. selangka - t. lengan atas - t. hasta - t. telapak tangan
Explanation
The correct answer is T. selangka - t. lengan atas - t. hasta - t. telapak tangan. This is because the image shows the sequence of bones starting from the clavicle (selangka), then the upper arm (lengan atas), followed by the wrist (hasta), and finally the palm (telapak tangan).
33.
Perhatikan gambar berikut!
Enzim pencernaan yang dihasilkan oleh organ yang ditunjukkan huruf X adalah...
Correct Answer
B. Pepsin dan renin
Explanation
Enzim pencernaan yang dihasilkan oleh organ yang ditunjukkan huruf X adalah pepsin dan renin. Hal ini dapat disimpulkan karena pilihan ini adalah satu-satunya yang menyebutkan kedua enzim tersebut. Pepsin adalah enzim yang berfungsi untuk mencerna protein, sedangkan renin adalah enzim yang berperan dalam proses pembentukan angiotensin yang mengatur tekanan darah.
34.
Pehatikan gambar pembuluh darah berikut!
Ciri-ciri pembuluh darah yang berwarna merah dan biru secara berturut turut adalah ....
Correct Answer
A.
Pembeda
Pembuluh merah
pembuluh biru
A
Letak
Jauh dari permukaan kulit
dekat permukaan kulit
Explanation
The correct answer is A. The characteristic that distinguishes the red and blue blood vessels is their location. The red blood vessels are located far from the surface of the skin, while the blue blood vessels are located close to the surface of the skin.
35.
Pada saat bayi bernapas terlihat perutnya mengembang. Mekanisme pernapasan yang terjadi adalah...
Correct Answer
A. Otot diagfragma berelaksasi dan volume rongga dada mengecil
Explanation
During inhalation, the diaphragm muscle relaxes and moves upwards, causing the volume of the chest cavity to decrease. This relaxation of the diaphragm allows the lungs to expand and fill with air, resulting in the observed expansion of the baby's abdomen during breathing.
36.
Perhatikan gambar struktur nefron berikut!
proses pembentukan urine yang berlangsung pada bagian yang ditunjuk oleh angka 1 adalah....
Correct Answer
C. Pembentukan urine primer
Explanation
The correct answer is "pembentukan urine primer". Based on the given information, the process of urine formation that occurs at the location indicated by number 1 is the formation of urine in its initial stage. This suggests that urine is being formed for the first time, before any reabsorption or addition of waste products takes place.
37.
Perhatikan organ reproduksi berikut!
Fungsi bagian yang ditunjuk huruf P adalah ...
Correct Answer
C. Tempat menghasilkan sel telur
Explanation
The correct answer is "tempat menghasilkan sel telur" because the letter P refers to an organ of the reproductive system that produces eggs or ova. This organ is known as the ovary, and it is responsible for the production and release of eggs during the reproductive cycle of a female.
38.
Perhatikan gambar penampang melintang akar tumbuhan berikut!
Nama jaringan yang dutunjuk huruf Z dan ciri-cirinya adalah...
Correct Answer
B. Endodermis >> mengalami penebalan dari zat gabus dan terdiri atas satu lapis sel
Explanation
The correct answer is Endodermis because it is described as experiencing thickening from cork substance and consisting of a single layer of cells.
39.
Tanaman rambutan buah besar - daging tipis (BBtt) disilangkan dengan tanaman rambutan buah kecil-daging tabal (bbTT). Apabila beturunan F1 disilangkan dengan sesamanya akan diperoleh fenotipe buah besar-daging tebal dan buah kecil - daging tipis dengan perbandingan...
Correct Answer
B. 9 : 1
Explanation
Apabila tanaman rambutan buah besar-daging tipis (BBtt) disilangkan dengan tanaman rambutan buah kecil-daging tebal (bbTT), maka fenotipe yang dihasilkan adalah buah besar-daging tebal (BbTt) dan buah kecil-daging tipis (bbtt). Jika beturunan F1 (BbTt) disilangkan dengan sesamanya, maka akan diperoleh fenotipe buah besar-daging tebal (BbTt) dan buah kecil-daging tipis (bbtt) dengan perbandingan 9 : 1.
40.
Kaktus dapat hidup di habitat kering. salah satu cara adaptasi yang dapat dilakukan oleh tumbuhan tersebut agar dapat bertahan hidup adalah ...
Correct Answer
D. Batangnya mampu menyerap air
Explanation
The correct answer is "batangnya mampu menyerap air." This is because in a dry habitat, water availability is limited. By having a stem that is capable of absorbing water, the cactus can ensure its survival by obtaining water from sources such as rainfall or dew. This adaptation allows the cactus to store water in its stem, which can be used during periods of drought or when water is scarce.