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NEET UG BIOLOGY MCQ: ANIMAL KINGDOM
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A: Hemichordata was earlier considered as a phylum under sub-phylum Chordata.
R: Hemichordata consits of a small group of worm-like marine animals.
R: Hemichordata consits of a small group of worm-like marine animals.
View answer and explanation
Correct option: D
A is wrong, R is true
Option D (A is wrong, R is true) is correct because the assertion incorrectly states that Hemichordata was a *phylum* under *sub-phylum* Chordata; it was actually a *sub-phylum* under the *phylum* Chordata. The reason is true as Hemichordates are worm-like marine animals.
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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?
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?