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NEET UG BIOLOGY MCQ: ANIMAL KINGDOM
1
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Understanding
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(S-I): The body cavity of Cnidarians is called gastrovascular cavity.
(S-II): The gastrovascular cavity opens with mouth on hypostome.
(S-II): The gastrovascular cavity opens with mouth on hypostome.
View answer and explanation
Correct option: A
Both statements are true
Option A is correct because both statements are true: Cnidarians have a gastrovascular cavity, and it opens through the mouth on the hypostome.
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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?