1. Which level of organization is exhibited by sponges?
A. Tissue level of organization
B. Cellular level of organization
C. Organ level of organization
D. Organ-system level of organization
Answer: B. Cellular level of organization
2. What type of symmetry is found in cnidarians?
A. Asymmetrical
B. Bilateral symmetry
C. Radial symmetry
D. No symmetry
Answer: C. Radial symmetry
3. Animals with a body cavity that is not lined by mesoderm are called:
A. Coelomates
B. Pseudocoelomates
C. Acoelomates
D. Diploblastic
Answer: B. Pseudocoelomates
4. Which phylum exhibits metameric segmentation?
A. Porifera
B. Annelida
C. Arthropoda
D. Mollusca
Answer: B. Annelida
5. The water vascular system is a characteristic feature of which group?
A. Mollusca
B. Echinodermata
C. Arthropoda
D. Hemichordata
Answer: B. Echinodermata
6. Which of the following organisms possesses an exoskeleton of chitin?
A. Mollusca
B. Arthropoda
C. Echinodermata
D. Coelenterata
Answer: B. Arthropoda
7. In which phylum are flame cells involved in excretion and osmoregulation?
A. Platyhelminthes
B. Aschelminthes
C. Annelida
D. Echinodermata
Answer: A. Platyhelminthes
8. Which of the following is an example of a chordate but not a vertebrate?
A. Branchiostoma
B. Ascidia
C. Salpa
D. All of the above
Answer: D. All of the above
9. Which feature is characteristic of mammals?
A. Presence of feathers
B. Mammary glands
C. Cold-blooded nature
D. Scales on the skin
Answer: B. Mammary glands
10. Amphibians differ from reptiles in that amphibians:
A. Have dry and cornified skin
B. Lay eggs with a hard shell
C. Have moist skin without scales
D. Exhibit viviparity
Answer: C. Have moist skin without scales
11. Animals with a body divided into segments and an open circulatory system belong to which phylum?
A. Mollusca
B. Arthropoda
C. Annelida
D. Echinodermata
Answer: B. Arthropoda
12. What type of symmetry do adult echinoderms exhibit?
A. Asymmetrical
B. Bilateral symmetry
C. Radial symmetry
D. Biradial symmetry
Answer: C. Radial symmetry
13. The comb plates used for locomotion are found in which phylum?
A. Coelenterata
B. Ctenophora
C. Mollusca
D. Porifera
Answer: B. Ctenophora
14. Which of the following phyla includes animals with a calcareous endoskeleton?
A. Echinodermata
B. Arthropoda
C. Mollusca
D. Hemichordata
Answer: A. Echinodermata
15. The distinguishing feature of hemichordates is the presence of a:
A. Water vascular system
B. Proboscis gland
C. Chitinous exoskeleton
D. Notochord throughout life
Answer: B. Proboscis gland
16. Which class of vertebrates lacks jaws?
A. Chondrichthyes
B. Osteichthyes
C. Cyclostomata
D. Amphibia
Answer: C. Cyclostomata
17. Which phylum is characterized by a pseudocoelom?
A. Platyhelminthes
B. Aschelminthes
C. Annelida
D. Ctenophora
Answer: B. Aschelminthes
18. What structure helps molluscs in feeding?
A. Parapodia
B. Radula
C. Comb plates
D. Notochord
Answer: B. Radula
19. What is a unique feature of chordates compared to non-chordates?
A. Presence of segmentation
B. Ventral heart
C. Presence of a notochord
D. Open circulatory system
Answer: C. Presence of a notochord
20. Which of the following is NOT a characteristic of reptiles?
A. Three-chambered heart (except crocodiles)
B. Cold-blooded nature
C. Presence of feathers
D. Dry and cornified skin
Answer: C. Presence of feathers
21. Which animals exhibit indirect development with a larval stage?
A. Amphibians
B. Mammals
C. Birds
D. Annelids
Answer: A. Amphibians
22. In which phylum is the body supported by spicules or spongin fibers?
A. Porifera
B. Coelenterata
C. Annelida
D. Arthropoda
Answer: A. Porifera
23. Which of the following features is a characteristic of birds (class Aves)?
A. Hollow pneumatic bones
B. Two-chambered heart
C. External gills
D. Chitinous exoskeleton
Answer: A. Hollow pneumatic bones
24. In vertebrates, which class has animals with a completely cartilaginous skeleton?
A. Osteichthyes
B. Chondrichthyes
C. Amphibia
D. Cyclostomata
Answer: B. Chondrichthyes
No comments:
Post a Comment