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Besides tube nucleus, the pollen tube at...

Besides tube nucleus, the pollen tube at the time of the entry of embryosac has

A

single gametic cell

B

two gametic cells

C

three gametic cell

D

four gametic cell

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The correct Answer is:
B
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KUMAR PRAKASHAN-SEXUAL REPRODUCTION IN FLOWERING PLANTS-Section -F (Multiple Choice Questions)
  1. In ……..flowers the stigma is always branched rough and sticky (A) ent...

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  2. Pollen grains of flower pollinated by wind or insects are not….. (A) ...

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  3. Besides tube nucleus, the pollen tube at the time of the entry of embr...

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  4. Egg apparatus is present on (A) micropylar end (B) chalazal end ...

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  5. Pollen tube is composed of (A) pectin (B) cutin (C) sporopollenin...

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  6. Which of the following promote pollen germination and tube growth?

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  7. How many nuclei are involved in double fertilization?

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  8. The pollination with the help of wind is termed as (A) anemophily (...

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  9. In which of the following cleistogamous flowers are present ? (A) Bal...

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  10. The largest inflorescence of the world is pollination by (A) insects ...

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  11. The chief pollinator of our agri - horticultural crops are…. (A) moth...

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  12. In….. Cleistogamous flower are produced on underground rhizomes or roo...

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  13. In bisexual flower physical barrier between anther and stigma is calle...

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  14. Pollination by wind is

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  15. Which of the following is not an example of water pollinated plant? (...

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  16. Which of the following statement is true for vallisneria? (A) Male fl...

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  17. In…..female flowers remais submerged in water and the pollen grains ar...

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  18. Which of the following birds helps in pollination? (A) Sun birds (B...

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  19. Entomophily is pollination by….. (A) reptiles (B) insects (C) rod...

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  20. To prevent inbreeding self-incompatibility is found in

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