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A: Geitonogamy helps in maintaining homo...

A: Geitonogamy helps in maintaining homozygosity and superiority of the race indefinitely
R: It is functionally ecorlogically and genetically cross pollination

A

if both assetion A reason are ture and the reason is the correct explanation of the assertion then mark

B

if both assertion & reason are ture and the reason is not the correct explanation of the assertin then mark

C

if assertion is true statement but reason is false then mark

D

if both assertion and reason are flase statements then mark

Text Solution

Verified by Experts

The correct Answer is:
C
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Explore conceptually related problems

The type of pollination which is considered as functionally cross-pollination but genetically self- pollination is

Explain how geitonogamy is functionally similar to cross pollination and genetically similar to self pollination ?

Which one of the following can be considered as genetically self but functionally cross pollination?

Geitonogamy is functionally__________& genetically__________.

(a) State one difference and one similarity between geitonogamy and xenogamy. (b) Explain any three devices developed in flowering plants to discourage self pollination and encourage cross pollination.

Geitonogamous flowering plants are genetically autogamous but functionally cross-pollinated. Justify.

When the pollers is transferred from anther to stigma of same flower, the pollination is called autogamy. (a) Cleistogamous flowers are invariably autogamous. Explain. (b) Geitonogamy is functionally cross pollination, but genetically similar to autogamy. Identify the statement. (Kerala Board 2017)

Assertion : Geitonogamy is functionally cross-pollination involving pollinating agent and genetically it is similar to autogamy since the pollen grains come from the another plant. Reason : Geitonogamy is the only type of pollination which during pollination brings genetically different types of pollen grains to the stigma.

Assertion :- Geitonogamy is functionaly cross pollination and genetically self pollination. Reason :- It involves pollinating agent but pollen grains come from same plant

AAKASH INSTITUTE-SEXUAL REPRODUCTION IN FLOWERING PLANTS -Assignment (SECTION D)
  1. A: Each cell fo the sporogenous tissue is capable of giving rise to a ...

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  2. A: In sporoderm pecitocellulosic layer is surrounded by sproropolleni...

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  3. A: The gerative cell comes to lie freely in the cytoplasm of the tube ...

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  4. A: Restitutional nucleus can be observed in endothecium cells R: End...

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  5. A: chalazal vacuole is present in the help cell of embryo sac R: Pol...

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  6. A: Formatin of mature male gametophyte requires one meiotic and one mi...

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  7. A: filiform apparauts guides the pollen tube into the synergids R: I...

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  8. A: Geitonogamy helps in maintaining homozygosity and superiority of t...

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  9. A: Initial growth of pollen tube takes places on expenditure of food p...

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  10. A: Eight cells of octant stage in dicot embryogeny are made by 2 verti...

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  11. A: Triple fusion is associated with the sexual reproduction inall sper...

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  12. A: Anatropous ovule is resupinate ovule R: The body of ovule is comp...

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  13. A: More than one pollen tubes can enter an embryo sac R: Double fert...

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  14. A: hybird seed have to eb produced every year because seeds collected ...

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  15. A: Growth of male gametophyte is completed over the female reproductiv...

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  16. A: certain proteins of pollen orgin identifies the compatible stigam ...

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  17. A: Tetrapid gametophyte can be produced form tetraploid sporophyte by...

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  18. A: continued self pollination checks inbreeding depression R: pollen...

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  19. A: Complete radicle is not produced by hypobasal tier of octant embryo...

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  20. A: Apomicitic embryo is asexual mode of reproduction R: it prevents ...

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