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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

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

B

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

C

(c) If A is true and R is false

D

(d) If both A and R are false

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A: Androecium of Cucurbita is synandrous. R: Anthers as well as filaments of stamens are united throughout their whole length.

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TRUEMEN BIOLOGY ENGLISH-Plant Morphology & Reproduction -ASSERTION AND REASON
  1. [A] : The switchover from vegetative to reproductive phase is now poss...

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  2. [A] : Insectivorous plants grow in carbohydrate deficient soil. [R] ...

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

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  4. [A] : Thorns may bear nodes and internodes in some plants. [R] : Tho...

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  5. [A] : For dispersal by wind fruits and seeds should be light. [R] : ...

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  6. Assertion. Dispersal of fruits in Xanthium takes place by wind and wat...

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  7. [A] : For dispersal by wind fruits and seeds should be light. [R] : ...

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  8. [A] : Xenogamy is defined as the transferance of pollen grain to stigm...

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  9. [A] : Anemophillous plants have to produce enormous quantities of poll...

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  10. [A] : Bees are colour-blind for red and are fond of yellow, violet and...

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  11. Assertion. The time involved between pollination and fertilization var...

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  12. [A] : The presence of endothelium around the embryo sac and its cytolo...

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  13. [A] : Synergids play an important role in directing the pollen tube gr...

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

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  15. [A] : Nucleus of pollen grain divides meiotically and form a pollen tu...

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  16. [A]: Incompatibility is a gene physiological process. [R]: Moderate...

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  17. [A]: The pollen sterility has been attributed to the malfunctioning of...

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  18. [A]: The three cells of the egg apparatus are arranged in a triangular...

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  19. [A]: Pollen grains from male parent are mostly transferred to the stig...

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  20. [A]: The two sperms cells in a pollen tube often change their shape. ...

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