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NEET UG BIOLOGY MCQ: ANIMAL KINGDOM
1
Medium
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Understanding
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(S-I): Nematodes exhibit sexual dimorphism.
(S-II): Osmoregulatory structures of nematodes are flame cells.
(S-II): Osmoregulatory structures of nematodes are flame cells.
View answer and explanation
Correct option: B
S-I is true and S-II is false
Option B (S-I is true and S-II is false) is correct because nematodes exhibit sexual dimorphism, but their osmoregulatory structures are renette cells or excretory pores, not flame cells.
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a) In Vertebrata the notochord is replaced by a cartilaginous or bony vertebral column in the adult.
b) A post anal tail is present in all adult urochordates.
c) In Cephalochordata, notochord is present only in larval tail.
d) Vertebrates have a ventral muscular heart with two, three or four chambers. Read the following organisms given in the below
Tapeworm, Roundworm, Hookworm, Threadworm
How many of the above mentioned parasites causes inflammation of the intestinal tract? What is left when bath-sponges dries up?