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[A] : The heart of birds is more advance...

[A] : The heart of birds is more advanced than the four chambered heart of crocodiles.
[R]: in the bird s heart, there is a complete elimination of left aorta.

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

Verified by Experts

The correct Answer is:
A
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  5. [A]: in mammalian heart there is a very swift conduction of stimulatio...

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  11. [A] : In mammals, ends of presynaptic fibres are enlarged to form syn...

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  12. [A] : Receptors located in tendons, joints and skeletal muscle give in...

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  13. [A]: Lateral-iine organs are important in con- nection with aquatic mo...

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  14. [A] : Accommodation in the bird's eye is controlled by the ciliary app...

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  16. [A] : In old age, the skin gets wrinkled. [R]: Epidermis has a sin...

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