Unit 3: Animal Diversity - I — Online MCQ Test
ZOOLOGY · CLASS 11 INTERMEDIATE 1 YEAR · Telangana State Board
Practice Unit 3: Animal Diversity - I with a free chapter-wise online MCQ test.
This chapter covers: This chapter covers non-chordate invertebrate phyla from Porifera to Hemichordata including general characteristics classification and type study of Earthworm..
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Unit 3: Animal Diversity - I — Important Questions & Answers
Which phylum includes organisms with a porous body and canal system?
- A. Porifera
- B. Cnidaria
- C. Platyhelminthes
- D. Annelida
Answer: A. Porifera
Porifera are commonly called sponges and possess a body full of pores and a canal system for water circulation.
Porifera are commonly called sponges and possess a body full of pores and a canal system for water circulation.
In Earthworm, the clitellum is present in which body segments?
- A. 1st to 5th segments
- B. 14th to 16th segments
- C. 20th to 22nd segments
- D. 40th to 42nd segments
Answer: B. 14th to 16th segments
The clitellum in earthworm is a thick glandular band present from the 14th to 16th segments.
The clitellum in earthworm is a thick glandular band present from the 14th to 16th segments.
Which of the following is NOT a characteristic of Porifera?
- A. Cellular level of organization
- B. Canal system
- C. True tissues present
- D. Sessile habit
Answer: C. True tissues present
Poriferans do not have true tissues; they show a cellular level of organization.
Poriferans do not have true tissues; they show a cellular level of organization.
In earthworm, the main excretory organs are:
- A. Malpighian tubules
- B. Nephridia
- C. Green glands
- D. Flame cells
Answer: B. Nephridia
Earthworms possess nephridia for excretion and osmoregulation.
Earthworms possess nephridia for excretion and osmoregulation.
Which statement is most appropriate for Hemichordata in the context of animal diversity?
- A. They are true chordates because they possess a notochord
- B. They are invertebrates with some chordate-like features but no true notochord
- C. They are arthropods with open circulatory system and jointed legs
- D. They are molluscs with mantle and radula
Answer: B. They are invertebrates with some chordate-like features but no true notochord
Hemichordates are invertebrates and show chordate-like features, but they do not possess a true notochord.
Hemichordates are invertebrates and show chordate-like features, but they do not possess a true notochord.