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NEET UG BIOLOGY MCQ: ANIMAL KINGDOM
1
Medium
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Understanding
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Assertion: Digestion is chiefly extra cellular in ctenophores.
Reason: Ctenophores are diploblastic organisms.
Reason: Ctenophores are diploblastic organisms.
View answer and explanation
Correct option: D
Assertion is false but reason is true
Option D is correct because the assertion is false (digestion is both intra and extracellular in ctenophores), but the reason is true (ctenophores are diploblastic).
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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?