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NEET UG BIOLOGY MCQ: ANIMAL KINGDOM
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Which of the following animals shows the presence of all the three features given below in the adult stage?
(a) Air bladder, (b) Bony endoskeleton, (c) Operculum
(a) Air bladder, (b) Bony endoskeleton, (c) Operculum
View answer and explanation
Correct option: B
Labeo
Option B (Labeo) is correct because Labeo (Rohu) is a bony fish (Osteichthyes) that possesses an air bladder, a bony endoskeleton, and an operculum.
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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?