1.
What snail-shaped organ in the ear funnels sound to the auditory nerve?
Correct Answer
C. Cochlea
Explanation
The cochlea is a snail-shaped organ in the inner ear that is responsible for funneling sound to the auditory nerve. It is filled with fluid and contains tiny hair cells that vibrate in response to sound waves, converting them into electrical signals that can be interpreted by the brain. The cochlea plays a crucial role in our ability to hear and perceive different pitches and tones.
2.
Which of these is part of an onion plant?
Correct Answer
A. Root
Explanation
The correct answer is root. The root is an essential part of an onion plant as it anchors the plant into the soil and absorbs water and nutrients from the ground. It also stores food for the plant and helps in the process of photosynthesis. The liver, stomach, and heart are organs found in animals and are not associated with onion plants.
3.
What is group of cells that work together and form an organ called?
Correct Answer
A. Tissues
Explanation
Tissues are a group of cells that work together and form an organ. They have specialized functions and structures that enable them to perform specific tasks within the body. Tissues can be found in various organs throughout the body, such as the heart, lungs, and liver. They are essential for the proper functioning of organs and maintaining overall health.
4.
Which of these creatures is a one-celled organism?
Correct Answer
A. Amoeba
Explanation
Amoeba is a correct answer because it is a one-celled organism. Amoebas are microscopic unicellular organisms that belong to the group of protozoa. They have a simple cell structure, lacking specialized organelles, and they can move and capture food using pseudopods. Amoebas are commonly found in freshwater environments and are known for their ability to change shape and adapt to different conditions. Unlike chickens, flatworms, and toadstools, which are multicellular organisms, amoebas consist of a single cell that performs all necessary functions for survival.
5.
What is another name for artificial body parts?
Correct Answer
C. Prostheses
Explanation
Prostheses are another name for artificial body parts. They are designed to replace or enhance missing or impaired body parts. Prostheses can be used for various purposes, such as improving mobility, restoring functionality, or enhancing appearance. They are custom-made to fit the individual's specific needs and can be used for limbs, joints, organs, or other body parts.
6.
Which cell part contains instructions and determines organism characteristics?
Correct Answer
C. Chromosome
Explanation
Chromosomes contain the genetic material, DNA, which carries the instructions for the development and functioning of an organism. They determine the characteristics of an organism, such as its physical traits, behavior, and susceptibility to certain diseases. Chromosomes are found in the nucleus of a cell and are responsible for passing on genetic information from one generation to the next through the process of reproduction.
7.
What jelly-like substance supports the nucleus and all other parts of the cell?
Correct Answer
C. Cytoplasm
Explanation
Cytoplasm is a jelly-like substance that supports the nucleus and all other parts of the cell. It fills the space between the cell membrane and the nucleus, providing a medium for cellular processes to occur. It contains various organelles, such as mitochondria, endoplasmic reticulum, and Golgi apparatus, which are involved in different cellular functions. Additionally, cytoplasm contains nutrients, ions, and other molecules necessary for cell metabolism and growth. Therefore, cytoplasm plays a crucial role in maintaining the structure and function of the cell.
8.
By what process do plants use chlorophyll to make glucose, a food sugar?
Correct Answer
A. pHotosynthesis
Explanation
Plants use chlorophyll to make glucose through the process of photosynthesis. During photosynthesis, plants use sunlight, water, and carbon dioxide to produce glucose and oxygen. Chlorophyll, which is found in the chloroplasts of plant cells, absorbs sunlight and converts it into chemical energy. This energy is then used to combine carbon dioxide and water to form glucose, which serves as a food sugar for the plant. Therefore, the correct answer is photosynthesis.
9.
With what process do living creatures make more of themselves?
Correct Answer
C. Reproduction
Explanation
Living creatures make more of themselves through the process of reproduction. Reproduction is the biological process by which new individuals of the same species are produced, either sexually or asexually. It is a fundamental characteristic of all living organisms and ensures the continuation of a species. Through reproduction, organisms pass on their genetic material to the next generation, allowing for the perpetuation of life. Transpiration is the process by which plants lose water, respiration is the process of exchanging gases in living organisms, and photosynthesis is the process by which plants convert sunlight into energy.
10.
What type of reproduction do yeast cells use?
Correct Answer
A. Budding
Explanation
Yeast cells use a type of reproduction called budding. Budding is a form of asexual reproduction where a new organism develops as an outgrowth or bud from the parent organism. In yeast, a small bud forms on the parent cell, grows in size, and eventually separates to become a new individual. This process allows yeast cells to rapidly reproduce and multiply.
11.
What are female sex cells called?
Correct Answer
C. Eggs
Explanation
Female sex cells are called eggs. Eggs are the reproductive cells produced by female organisms, including humans. They are larger in size compared to male sex cells (sperm) and are responsible for fertilization when combined with sperm. Eggs contain genetic material and provide the necessary nutrients for the development of a new organism after fertilization. This is why eggs are crucial for sexual reproduction in many species, including mammals.
12.
What are male sex cells called?
Correct Answer
D. Sperm
Explanation
Sperm is the correct answer because it refers to the male sex cells that are involved in sexual reproduction. Sperm cells are produced in the testes and are responsible for fertilizing the female egg during sexual intercourse. They are characterized by their motility and their ability to carry genetic information from the male to the female for reproduction.
13.
What does the zygote form once it starts mitosis?
Correct Answer
D. Embryo
Explanation
Once the zygote starts mitosis, it forms an embryo. During mitosis, the zygote undergoes rapid cell division and differentiation, resulting in the formation of an embryo. The embryo is the earliest stage of development in multicellular organisms, and it is during this stage that the basic body structures and organs begin to form. Therefore, the correct answer is "Embryo."
14.
What do you call a person who sells and takes care of plants?
Correct Answer
B. Horticulturist
Explanation
A horticulturist is a person who sells and takes care of plants. They have knowledge and expertise in plant cultivation, propagation, and maintenance. They are responsible for ensuring the health and well-being of plants, including their growth, pest control, and overall maintenance. Horticulturists may work in various settings such as nurseries, botanical gardens, or landscaping companies. Their role involves not only selling plants but also providing guidance and advice to customers on plant care and maintenance.
15.
What kingdom would a human be in?
Correct Answer
B. Animal
Explanation
A human would be classified in the animal kingdom because humans possess characteristics that are common to animals, such as the ability to move, the presence of a nervous system, and the need to consume organic matter for energy. Additionally, humans share a common ancestor with other animals and are part of the same evolutionary lineage.
16.
In which kingdom would a toadstool fit?
Correct Answer
A. Fungi
Explanation
A toadstool is a type of fungus, so it would fit in the kingdom Fungi. Fungi are organisms that obtain nutrients by decomposing organic matter, and they include mushrooms, molds, and yeasts. Toadstools are a specific type of mushroom that typically have a cap and stem. They play important roles in ecosystems by breaking down dead plant material and recycling nutrients.
17.
What science word means "to group"?
Correct Answer
A. Classify
Explanation
The word "classify" means to group or categorize things based on their similarities or characteristics. In science, classification is an important process used to organize and understand the vast diversity of living and non-living things. It involves identifying common features or traits and placing them into specific categories or groups. By classifying objects or organisms, scientists can better study and analyze their relationships, patterns, and behaviors. Therefore, "classify" is the correct answer as it accurately represents the scientific concept of grouping or categorizing.
18.
Which of these could be used to identify birds?
Correct Answer
A. Field Guide
Explanation
A field guide could be used to identify birds because it is a comprehensive book or resource that provides detailed information about different species of birds, including their physical characteristics, habitats, behaviors, and distribution patterns. It typically includes illustrations or photographs of the birds, along with descriptions and identification tips. By using a field guide, birdwatchers or enthusiasts can compare the features of the birds they observe with the information in the guide to accurately identify them. Constellations, myths, and ESP are not relevant or reliable methods for identifying birds.
19.
Which of these is a way dogs communicate with each other?
Correct Answer
D. Barking
Explanation
Dogs communicate with each other through barking. Barking is a vocalization that dogs use to express various emotions and needs. It serves as a form of communication to alert other dogs of potential danger, establish territory, express excitement, or seek attention. Barking can vary in pitch, duration, and intensity, conveying different messages depending on the situation. It is an essential means of communication for dogs to interact and understand each other's intentions and emotions.
20.
Which of these animals competes with a lion for food?
Correct Answer
B. Hyena
Explanation
Hyenas are known to be scavengers and opportunistic hunters, often stealing kills from lions. They have a similar diet to lions and often compete with them for food. This competition can lead to intense confrontations between the two species, as they both rely on similar prey animals. Therefore, the correct answer is Hyena.