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The gametophyte is not an independent, f...

The gametophyte is not an independent, free-living generation in

A

Pinus

B

Polytrichum

C

Adiantum

D

Marchantia

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The correct Answer is:
A
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In gymnosperms, the male and the female gametophytes do not have an independent free-living existence. (True/False)

Some statements are given below :- (a) In gymnosperms the male and the female gametophytes do not have an independent free-living existence (b) In Cycas foliage leaves are pinnately compound (c) The stems are branched in Pinus and Cedrus (d) In Pinus, male cones and female cones are borne on different trees. Out of them, which statements are correct ?

Assertion : The leaves in gymnosperms are well adapted to withstand extremes of temperature, humidity and wind Reason : Unlike bryophytes and pteridophytes, in gymnosperms the male and female gametophytes do not have an independent free living existence.

In which of the following, gametophyte is not independent and free living ?

Male and female gametophytes are independent and free-living in

Male and female gametophytes are independent and free-living in

Male and female gametophytes are independent and free-living in

Both male and female gametophytes do not show free-living existence in

A free living roundworm is

A free living roundworm is

AAKASH INSTITUTE ENGLISH-PLANT KINGDOM -ASSIGNMENT SECTION -C (Previous Years Questions)
  1. Consider the following four statements whether they are correct or wro...

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  2. Archegoniophore is present in

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  3. The gametophyte is not an independent, free-living generation in

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  4. Compared with the gametophytes of the bryophytes, the gametophytes of ...

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  5. Which one of the following plants is monoecious?

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  6. Male and female gametophytes are independent and freeliving in:

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  7. Examine the figures A, B, C and D. In which one of the four options al...

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  8. Which one of the following plants is monoecious?

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  9. Which one of the following has haplontic life cycle?

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  10. Polygenetic system of classification is based on :

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  11. Mannitol is the stored food in

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  12. Which one of the following is considered important in the development ...

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  13. Select one of the following pairs of important features distinguishing...

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  14. Which one of the following is heterosporous?

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  15. In which one of the following, male and female game tophytes do not ha...

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  16. In the prothallus of a vascular cryptogam, the antherozoids and egg ma...

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  17. If you are asked to classify various algae into distinct groups. which...

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  18. Flagellated male gametes are present in all the three of which one of ...

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  19. In gymnosperms, the pollen chamber represents

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  20. Spore dissemination in some liverworts is aided by:

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