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$ The animals in which body temperature ...

$ The animals in which body temperature varies according to the surroundings are called poikilothermal animals.
! Human beings have four chambered heart.

A

If both As and R are correct and R is correct explanation of As

B

If both As and R are correct but R is not correct explanation of As

C

If As is correct, R is wrong

D

If both As and R are wrong.

Text Solution

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The correct Answer is:
B
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DINESH PUBLICATION-ENVIRONMENTAL ISSUES-Assertion and reason
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  4. $ The animals which give birth to young ones are called oviparous. !...

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  5. $ Secondary host of Taenia solium is pig. ! Malarial parasite comple...

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  6. $ Arthropoda is the largest group in the animal kingdom. ! Honey bee...

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  7. $ Mammals are warm blooded. ! Warm blooded animals can tolerate only...

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  8. $ Notochord is present in vertebrates. ! Notochord is always formed ...

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  9. $ The first formed embryonic cavity is called blastocoel. ! Annelids...

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  12. $ Silver fish is found in the sea. ! Fish represents warm blooded an...

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  13. $ The microfossils discovered in the earth's oldest fossil bearing roc...

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  14. $ Exo-biology is a branch of biology. ! It deals with the study of e...

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  15. $ Mangrove plants grow in the deserts. ! These plants have symbiotic...

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  17. $ Tap root system is that which arises from the radicle of seed. ! A...

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  18. $ Temperature is an important factors for growth. ! High temperature...

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