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NEET UG BIOLOGY MCQ: ANIMAL KINGDOM
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Medium
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Analyzing
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Which pair of animals show all the below listed features (a to e)?
a. Ctenoid scales on skin
b. Direct development
c. Streamlined body
d. Air bladder is present
e. Marine
a. Ctenoid scales on skin
b. Direct development
c. Streamlined body
d. Air bladder is present
e. Marine
View answer and explanation
Correct option: C
Exocoetus and Hippocampus
Option C (Exocoetus and Hippocampus) is correct because both Exocoetus (flying fish) and Hippocampus (seahorse) possess ctenoid scales, direct development, streamlined bodies, air bladders, and are marine.
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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?