NEET UG BIOLOGY MCQ: ANIMAL KINGDOM

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Understanding +4 | -1

[A]: Chordates have an oxygen carrying pigment called haemoglobin. It is always present in red blood corpuscles.

[R]: Non-chordates have either no haemoglobin or if it is present, it is present in plasma. Non-chordates require very little oxygen as compared to chordates for their body functions.

View answer and explanation

Correct option: A

Both A and R are true and R is the correct explanation of A

Option B (Both A and R are true and R is not the correct explanation of A) is correct because both the assertion and the reason are true, but the reason doesn't fully explain why chordates have hemoglobin in red blood cells.

More Questions from ANIMAL KINGDOM

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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?