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NEET UG BIOLOGY MCQ: ANIMAL KINGDOM
1
Hard
1 of 1
Understanding
+4 | -1
[A]: Sphenodon is referred to as a living fossil.
[R]: It has retained many primitive characteristics of fossil or stem reptiles belonging to permain period.
[R]: It has retained many primitive characteristics of fossil or stem reptiles belonging to permain period.
View answer and explanation
Correct option: A
Both A and R are true and R is the correct explanation of A
Option A is correct because Sphenodon, also known as the Tuatara, is indeed a living fossil, and the reason provided accurately describes its retention of primitive characteristics from the Permian period.
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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?
