NEET UG BIOLOGY MCQ: ANIMAL KINGDOM

1 Medium

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Characteristics : Presence of mammary glands, two pairs of limbs, hair- bearing skin, pinnae, heterodont dentition, four- chambered heart.
Which of the following organism shows the above mentioned characteristics?

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Correct option: C

Canis

Option C (Canis) is correct because Canis (dogs) exhibits all the listed characteristics, which are defining features of mammals.

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Which one of the following in birds, indicates their reptilian ancestry The presence of the tube feet is a characteristic feature of the phylum Respiratory organs of Saccoglossus are Which of the following statements are true for the phylum – Chordata?
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?