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NEET UG BIOLOGY MCQ: ANIMAL KINGDOM
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Identify the correct pair of birds with a raft-like keel and lacking preen gland and syrinyx
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Correct option: C
Casuarius and Struthio
Option C (Casuarius and Struthio) is correct because both Casuarius (cassowary) and Struthio (ostrich) have a raft-like keel and lack preen gland and syrinx.
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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?