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NEET UG BIOLOGY MCQ: ANIMAL KINGDOM
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How many of the following given characteristics is/are shown by the class to which Clarias belongs?
a) Sexes are separate
b) Fertilisation is usually external
c) Mostly Oviparous
d) Development is direct.
Choose the correct option.
a) Sexes are separate
b) Fertilisation is usually external
c) Mostly Oviparous
d) Development is direct.
Choose the correct option.
View answer and explanation
Correct option: A
Four
Option A (Four) is correct because Clarias (a fish) exhibits all four characteristics: separate sexes, external fertilization, oviparity, and direct development.
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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?