Grade 12 Animal Biology Worksheet
This worksheet covers key concepts in animal biology, including cell structure, physiological processes, and classification.
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Grade 12 Animal Biology Worksheet
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Read each question carefully and answer to the best of your ability. For multiple choice questions, circle the correct option. For fill-in-the-blank, write your answer on the line provided. For short answer, explain your reasoning clearly.
1. Which of the following organelles is primarily responsible for ATP production in animal cells?
Endoplasmic Reticulum
Mitochondria
Golgi Apparatus
Lysosome
2. Which type of tissue is responsible for transmitting electrical signals throughout the animal body?
Epithelial tissue
Connective tissue
Muscle tissue
Nervous tissue
3. The process by which animals maintain a stable internal environment despite external changes is called .
4. Animals that rely on external sources of heat to maintain their body temperature are known as .

5. Identify two major differences between an animal cell and a plant cell. Refer to the diagram provided.
6. Briefly explain the concept of natural selection and its role in animal evolution.
7. All animals are multicellular organisms.
True
False
8. Invertebrates possess a backbone.
True
False
Match the animal class on the left with its characteristic on the right.
9. Mammals
a. Lay eggs, have scales
10. Birds
b. Produce milk, have fur/hair
11. Reptiles
c. Have feathers, lay eggs
12. Amphibians
d. Live in water and on land, moist skin