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$ Fertilization with the help of a polle...

$ Fertilization with the help of a pollen tube is called Siphonogamy.
! Entry of pollen tube into the ovule through integuments is called Mesogamy.

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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  2. $ Protonema is found in the life cycle of Liverworts. ! Liverworts h...

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  3. $ Fertilization with the help of a pollen tube is called Siphonogamy. ...

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  4. $ Flower is a modified shoot which helps in sexual reproduction. ! M...

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  5. $ Self pollination in bud condition of a flower is called cleistogamy....

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  6. $ Angiosperms produce seeds, but do not produce fruits. ! Fruit and ...

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  7. $ Orthotropous ovule has micropyle at the upper end. ! Ovule is also...

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  8. $ Double fertilization and triple fusion occurs in Angiosperms. ! Tr...

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  9. $ The animals in which body temperature varies according to the surrou...

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  10. $ The animals which give birth to young ones are called oviparous. !...

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

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

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  16. $ Neuron means a nerve cell. ! Neurons are found in the brain.

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  17. $ The excretory organs of Flatworms are called Flame cells. ! Excret...

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

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