Science Form 3 Exercise With Answers
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Do you wish to practice science form 3? If you are intimidated by the title, take this science form 3 exercise with answers, and if into thinking that this quiz is easy or hard, you might just be surprised. Try it out and gauge your knowledge and information on the chapters. The quiz is all about your knowledge and practice. If you have enough information on these chapters and topics, you can easily ace the quiz. All the best for a perfect score.
Questions and Answers
- 1.
The place where the exchange of gases takes place is/are the __________.
- A.
Rib
- B.
Bronchiole
- C.
Alveolus
- D.
Bronchus
Correct Answer
C. AlveolusExplanation
The alveolus is a tiny air sac in the lungs where the exchange of gases, specifically oxygen and carbon dioxide, occurs. Oxygen from the inhaled air diffuses into the bloodstream through the thin walls of the alveoli, while carbon dioxide, a waste product, diffuses out of the bloodstream into the alveoli to be exhaled. This exchange of gases is essential for respiration and supplying oxygen to the body's cells. The other options, rib, bronchiole, and bronchus, are not directly involved in the exchange of gases.Rate this question:
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- 2.
The trachea branches into two. Each branch is called a bronchiole.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The trachea does not branch into bronchioles. After the trachea, it branches into two tubes called bronchi, which further divide into smaller tubes called bronchioles.Rate this question:
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- 3.
What organs are related to the respiratory system? (select three)
- A.
Aorta
- B.
Bronchus
- C.
Atrium
- D.
Nasal cavity
- E.
Alveolus
Correct Answer(s)
B. Bronchus
D. Nasal cavity
E. AlveolusExplanation
The respiratory system is responsible for the intake of oxygen and carbon dioxide in the body. The nasal cavity is part of the respiratory system as it filters, warms, and moistens the air we breathe. The alveolus is a tiny air sac in the lungs where oxygen and carbon dioxide are exchanged with the bloodstream. The bronchus is a tube that carries air into the lungs. The aorta and atrium are not directly related to the respiratory system. The aorta is the main artery that carries oxygenated blood from the heart to the rest of the body, and the atrium is one of the chambers of the heart.Rate this question:
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- 4.
The ribcage moves ......... and outward when inhalation process.
Correct Answer(s)
upwards, Upward, up, UpExplanation
During inhalation, the ribcage moves up and outward to expand the chest cavity, allowing the lungs to fill with air. This movement is facilitated by the contraction of the diaphragm and intercostal muscles, creating negative pressure within the thoracic cavity and drawing air into the lungs.Rate this question:
- 5.
...........can cause addiction when a person smokes cigarettes.
Correct Answer(s)
NicotineExplanation
Nicotine is a highly addictive substance found in tobacco products. It stimulates the release of dopamine in the brain, creating pleasurable feelings and reinforcing the desire to use it again. The addictive nature of nicotine can lead to dependence and cravings, making it difficult for individuals to quit smoking or using other nicotine products.Rate this question:
- 6.
Phloem transport _____
- A.
Water
- B.
Mineral salt
- C.
Food
- D.
Light
Correct Answer
C. FoodExplanation
Phloem tissue is responsible for the movement of food throughout a plant. It contains sieve tubes, which are specialized cells that transport sugars, amino acids, and other organic compounds produced during photosynthesis. These nutrients are transported from the leaves, where they are produced, to other parts of the plant, such as the roots, stems, and fruits, where they are needed for growth, energy, and storage.Rate this question:
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- 7.
What happens to light when it passes through a prism?
- A.
It bends and separates into a rainbow of colors.
- B.
It disappears.
- C.
It moves straight through without changing.
- D.
It reflects back in the same direction it came from.
Correct Answer
A. It bends and separates into a rainbow of colors.Explanation
When light passes through a prism, it undergoes refraction, which means the light bends due to a change in speed as it enters a different medium. A prism has the ability to split white light into a spectrum of colors (visible light spectrum) because different colors of light bend at slightly different angles. The separation of colors happens because each color has a different wavelength, causing each to refract differently. This phenomenon is known as dispersion.Rate this question:
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- 8.
The O blood type is known as the universal recipient.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The O blood type is not known as the universal recipient. The O blood type is known as the universal donor because it lacks both A and B antigens on the red blood cells, making it compatible with all other blood types.Rate this question:
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- 9.
The ............ transports deoxygenated blood from all parts of the body to the right atrium.
Correct Answer
Vena cavaExplanation
The vena cava is a large vein that carries deoxygenated blood from all parts of the body back to the right atrium of the heart. There are two branches of the vena cava: the superior vena cava, which receives blood from the upper body, and the inferior vena cava, which receives blood from the lower body. Together, they ensure that deoxygenated blood is returned to the heart to be pumped to the lungs for oxygenation.Rate this question:
- 10.
Kidneys consist of all these parts, except
- A.
Medulla
- B.
Urinary bladder
- C.
Pelvis
- D.
Cortex
Correct Answer
B. Urinary bladderExplanation
The urinary bladder is not a part of the kidneys. The kidneys are responsible for filtering waste products from the blood and producing urine, while the urinary bladder is a separate organ that stores urine before it is eliminated from the body. The other options, medulla, pelvis, and cortex, are all parts of the kidneys. The medulla is the innermost region, the pelvis is the central cavity that collects urine before it is transported to the bladder, and the cortex is the outer layer of the kidneys where filtration takes place.Rate this question:
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- 11.
The human excretory system consists of these organs (select all that apply).
- A.
Renal artery
- B.
Renal vein
- C.
Lung
- D.
Urethra
- E.
Skin
- F.
Kidneys
- G.
Mouth
- H.
Urinary bladder
- I.
Ureters
- J.
Pelvis
Correct Answer(s)
A. Renal artery
B. Renal vein
D. Urethra
E. Skin
F. Kidneys
H. Urinary bladder
I. UretersExplanation
The human excretory system consists of several organs and structures that work together to remove waste products from the body. The kidneys are the main organs responsible for filtering waste from the blood and producing urine. The renal artery and renal vein are blood vessels that supply and drain blood to and from the kidneys. The urethra is a tube that carries urine from the bladder to the outside of the body. The urinary bladder is a muscular sac that stores urine until it is ready to be expelled. The ureters are tubes that transport urine from the kidneys to the bladder. While the skin is primarily associated with functions such as temperature regulation and protection, it also plays a role in excretion through the sweat glands. Sweat contains water, salts, and small amounts of waste products like urea, providing another route for waste removal.Rate this question:
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- 12.
Resin is an excretory product of rubber trees.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Resin is not an excretory product of rubber trees. Resin is a sticky substance that is produced by certain plants as a protective coating for wounds or as a defense against insects or pathogens. It is not directly related to rubber trees, which produce latex as their excretory product.Rate this question:
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- 13.
Which microorganism utilizes budding as a means of reproduction?
- A.
Amoeba
- B.
Yeast
- C.
Mould
- D.
Planaria
Correct Answer
B. YeastExplanation
The term "budding" refers to a form of asexual reproduction where a smaller organism grows out of the body of a larger organism. Yeast is a type of fungus that reproduces through budding, where a small bud grows out of the parent cell and eventually detaches to become a new individual. Amoebas, moulds, and planaria reproduce through other methods such as binary fission or fragmentation, making yeast the only organism in the given list that exhibits budding.Rate this question:
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- 14.
Choose the types of asexual reproduction (choose all that apply).
- A.
Binary Fission
- B.
Respiration
- C.
Regeneration
- D.
Photosynthesis
Correct Answer(s)
A. Binary Fission
C. RegenerationExplanation
The correct answer is binary fission and regeneration. Binary fission is a type of asexual reproduction where a single organism divides into two identical daughter cells. Regeneration is another type of asexual reproduction where an organism can regrow lost or damaged body parts to form a complete individual. Both binary fission and regeneration are common methods of asexual reproduction in various organisms.Rate this question:
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- 15.
The penis produces sperm.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The penis is an external reproductive organ in males that is responsible for delivering sperm into the female reproductive system. Sperm is actually produced in the testes, which are located inside the scrotum, a sac-like structure below the penis.Rate this question:
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Sep 02, 2024Quiz Edited by
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Expert Reviewed by
Daniel P -
Mar 04, 2011Quiz Created by
Asad_dun
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