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In dicots, at how many places exine is a...

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

A

2

B

3

C

1

D

more than 3

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The correct Answer is:
B
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TRUEMAN BIOLOGY-SEXUAL REPRODUCTION IN FLOWERING PLANTS-MULTIPLE CHOICE QUESTIONS
  1. The intine of a pollen grain is mainly made up of

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  2. In angiosperm pollen grains are dehisced at

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

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  4. Which one is larger nucleus in pollen grain ?

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

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

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  7. Germ pore is the area where exine is

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  8. A plant root has 16 chromosomes , so

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  9. Sculpturing of exine of pollen is important in

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

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

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

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  13. In tenuinucellate type of ovule

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

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

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  16. Ovule is inverted (resupinates at 180^(@)) with body fused to funicle,...

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  17. Ovule of Opuntia is coiled and turn at more kthan 360^(@) angle, i...

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  18. Female gametophyte (megagametophyte of aniosperms) is represented b...

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  19. The female gametophyte (embryo sac) of a typical dicot (Polygonum) at...

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  20. Number of chromosomes is 24 in nucellus. Number of chromosomes in micr...

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