NEET UG BIOLOGY MCQ: ANIMAL KINGDOM

1 Easy

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Understanding +4 | -1

Assertion: Porifera to Echinoderms are non-chordates.
Reason: Notochord is not formed during embryonic
development in these animals.

View answer and explanation

Correct option: A

If both the assertion and the reason are true and the
reason is a correct explanation of the
assertion

Option A (If both the assertion and the reason are true and the reason is a correct explanation of the assertion) is correct because non-chordates, ranging from Porifera to Echinoderms, lack a notochord during embryonic development, which is the defining characteristic of chordates.

More Questions from ANIMAL KINGDOM

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Which one of the following in birds, indicates their reptilian ancestry The presence of the tube feet is a characteristic feature of the phylum Respiratory organs of Saccoglossus are Which of the following statements are true for the phylum – Chordata?
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?