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The number of pollen grains, produced by...

The number of pollen grains, produced by each head inflorescene of family Asteraceae having 10 actinomorphic flowers (if each anther produces 20 pollen grains), are

A

300

B

500

C

800

D

1000

Text Solution

Verified by Experts

The correct Answer is:
D
Each flower has 5 anthers and, therefore are 50 anthers. Each anther produces 20 pollen grains. So total pollen grains will be `10 xx 5 xx 20 = 1000`.
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TRUEMAN BIOLOGY-SEXUAL REPRODUCTION IN FLOWERING PLANTS-MULTIPLE CHOICE QUESTIONS
  1. A typical anther of an angiosperm is

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  2. Endothecium layer present below epidermis in anther bears fibrous thic...

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  3. The number of pollen grains, produced by each head inflorescene of fam...

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  4. Pollen sac correponds to which part

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  5. Pollen tube is made up of

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  6. The intine of a pollen grain is mainly made up of

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  7. In angiosperm pollen grains are dehisced at

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  8. In dicots, at how many places exine is absent in the pollen grain ?

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  9. Which one is larger nucleus in pollen grain ?

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  10. The exine of a pollen grain is composed of one of the most resistant ...

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  11. Genotypically the pollen grains produced inside the anther belong to 1...

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  12. Germ pore is the area where exine is

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  13. A plant root has 16 chromosomes , so

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  14. Sculpturing of exine of pollen is important in

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  15. Ovule is technically equivalent to 1. megasporangium with one megaspor...

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  16. Ovule is attached to the placenta by a stalk known as 1. funicle 2. ...

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  17. Collar like outgrowth arising from the base of ovule and forming is a ...

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  18. In tenuinucellate type of ovule

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  19. Crassinucellate ovule shows: 1. Developed nucellus 2. Partially dev...

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  20. When ovule is straight with funiculus, embryo sac, chalaza and microp...

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