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NEET UG BIOLOGY MCQ: ANIMAL KINGDOM
1
Easy
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Analyzing
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Assertion: The duck-billed Platypus and the spiny ant-eater,
both are egg-laying animals yet
they are grouped under mammals
Reason: Both of them have seven cervical vertebrae and 12
pairs of cranial nerves
both are egg-laying animals yet
they are grouped under mammals
Reason: Both of them have seven cervical vertebrae and 12
pairs of cranial nerves
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
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 both platypus and echidna lay eggs and are grouped under mammals due to mammalian characteristics like mammary glands, hair, and three middle ear bones, which are associated with having seven cervical vertebrae and 12 pairs of cranial nerves.
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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?
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?
