Biology Practice: Classification of Animals (Mock Test 1 - Invertebrates)
1. On what primary basis is the Animal Kingdom divided into Non-chordates and Chordates?
2. Sponges (Phylum Porifera) exhibit which level of organization?
3. In which type of circulatory system is the blood pumped out of the heart and the tissues directly bathed in it?
4. Which symmetry allows an organism's body to be halved when cut anywhere along the central axis (e.g., Starfish)?
5. Diploblastic animals, such as Coelenterates, have cells arranged in which two embryonic layers?
6. The body cavity located between the body wall and the gut wall is scientifically known as the:
7. The serial repetition of at least some organs in segments (as seen in earthworms) is called:
8. In Porifera, the numerous tiny pores through which water enters the body are called:
9. Which of the following anti-cancer drugs was famously extracted from a sea sponge?
10. Phylum Coelenterata (Cnidaria) is characterized by which type of organization?
11. Which phylum contains the first triploblastic animals (e.g., Liver flukes)?
12. Nematodes (Roundworms) are unique because they possess a "false" body cavity called a:
13. Which phylum contains the first animals to possess a "true" body cavity (coelom)?
14. Arthropoda is the largest phylum of the animal kingdom. Its body is covered by an exoskeleton made of:
15. Why do Earthworms only live in humid conditions?
16. Soft-bodied animals like Octopus and Snail belong to which phylum?
17. Which phylum name means "spiny-skinned animals" and consists exclusively of marine organisms?
18. Echinoderms move around using a powerful water-driven system called the:
19. In Echinoderms, what type of symmetry is found in the "larval stage"?
20. Metameric segmentation is a characteristic feature of which animal?