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[A] : Synandrous condition is found in c...

[A] : Synandrous condition is found in curcurbits.
[R] : The male flower of curcurbits, generally, contains five stamens which are laterally fused (anthers and filaments both).

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:
A
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TRUEMAN BIOLOGY-Plant Morphology & Reproduction -ASSERTION AND REASON
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  2. [A]: The two sperms cells in a pollen tube often change their shape. ...

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  3. [A] : Synandrous condition is found in curcurbits. [R] : The male fl...

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  4. [A]: In certain plants the stem that twins around the support is hard ...

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  5. [A]: Leaf in Daucus carota is decompound. [R]: Saprophytic and paras...

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  6. [A]: The colour of flowers in Bougainvillia is due to the coloured bra...

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  7. [A]: The endosperm contains the triploid number of chromosomes. [R]:...

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

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

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

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

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

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  13. Assertion (A): Many visitors to the hills suffer from skin and respira...

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

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

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  16. Assertion. In apomixis , plants of new genetic sequence are produced. ...

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

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

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

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

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