1. Animals are heterotrophs that lack cell walls and are eukaryotic.
2. The type of tissue covering body surfaces is epithelial tissue.
3. Invertebrates are animals that do not have a backbone (vertebral column).
4. List 3 examples of invertebrates: jellyfish, earthworms, butterflies.
5. Mammals, amphibians, reptiles, and birds are all vertebrates (have a backbone).
6. An animal’s ability to maintain a relatively stable internal environment is called homeostasis.
7. Match the following according to what they eat:
- Herbivores: eat plants
- Carnivores: eat animals
- Omnivores: eat both plants and animals
8. A symbiotic relationship in which two animals live in close association with each other is called mutualism (or symbiosis).
9. Respiration means that an animal takes in oxygen and gives off carbon dioxide to release energy from food.
10. Large animals require a circulatory system to move materials around within their bodies.
11. A urinary waste product of a cell is urea (or ammonia, depending on context).
12. The system responsible for eliminating waste is the excretory system.
13. The system responsible for responding to the environment is the nervous system.
14. Sexual reproduction enables animals to move around, usually by working in combination with a support structure called a skeleton or musculoskeletal system.
15. Asexual reproduction produces offspring that are identical to the parent.
16. Complex animals tend to have high levels of cell specialization and organ systems.
17. View Figure 26-3, answer True (T) or False (F) to the following:
- Medusas are more closely related to manatees than to annelids. → False
- Medusas, annelids, and arthropods all have a coelom. → True
- Sponges do not have tissues. → True
18. Tissues join together to form organs, and organs form organ systems.
Parent Tip: Review the logic above to help your child master the concept of animal kingdoms worksheet.
