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[A]: One diploid embryo sac mother cell ...

[A]: One diploid embryo sac mother cell develops within the nucellus of the ovule.
[R]: Embryo sac mother cell divides meioti- cally and one of the cells produced becomes the haploid embryo sac.

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

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The correct Answer is:
B
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TRUEMAN BIOLOGY-Plant Morphology & Reproduction -ASSERTION AND REASON
  1. [A]: The endosperm contains the triploid number of chromosomes. [R]:...

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  2. [A]: Spore mother cells within the anther pollen sacs form four haploi...

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  3. [A]: One diploid embryo sac mother cell develops within the nucellus o...

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  4. [A]: Triple fusion results in veg~tative fertiliza- tion of angiosperm...

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  5. [A]: Pollination is essential for fertilization. [R]: Abscission or...

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  6. [A]: The biennial plants live for two years. [R]: They flower in bo...

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  7. Assertion : Many visitors to the hills suffer from skin and respirator...

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  8. [A]: Endosperm is tripolid in angiosperms. [R]: In gymnosperms, it ...

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  9. Assertion. A pollen grain of angiosperm is considered as the male game...

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  10. The number of antipodals cells in the matured embryo sac is

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  11. Assertion : In collateral vascular bundles phloem is situated toward ...

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  12. [A]: The secondary pholem consititutes a less poriment part of the tre...

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  13. [A] : The narrow band of meristemetic tissue present between pholem an...

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  14. [A]: The inner most distinict layer of the cortex is called endomermi...

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  15. [A]: Gramineous type of stomata are found in Gramineae and Cyperaceae....

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  16. [A]: lntercellular spaces are found in meristematic cells [R]: The m...

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  17. [A]: Monocot stem has collateral open vascu- lar bundle. [R]: Open ...

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  18. [A]: Root system in hydrophytes is poorly de- veloped. [R]: The con...

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  19. [A]: Aerenchyma is a characteristic of litho- phyte. [R]: It is a sp...

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  20. [A]: Protostele is most simple primitive type of stele. [R]: Accordi...

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