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The gametophyte is not an independent, f...

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

A

Polytrichum

B

Adiantum

C

Marchantia

D

Pinus

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The correct Answer is:
D
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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.

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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

ALLEN-DIVERSITY IN LIVING WORLD (PLANT DIVERSITY)-EXERCISE-II
  1. The function of leghaemoglobin in the root nodules of legumes is

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

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

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  4. Examine the fiure given below and select the right option giving all t...

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  5. Selaginella and Salvinia are considered to represent a significant ste...

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  6. Consider the following four statements. Which of the following stateme...

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  7. Which one of the following is a wrong matching of a microbe and its in...

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  8. The pathogen Micropsporum responsible for ringworm disease in humans b...

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  9. Which statements is correct about mosses?

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  10. Cycas and Adiantum resemble each other in having

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  11. Maximum nutritional diversity is found in the group

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  12. Which one of the following is common to multicellular fungi,filamentou...

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  13. Which one of the following is a correct statement regarding the plant ...

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  14. Nuclear membrane is absent in:-

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  15. Which one of the following is same in E.coli and Chlamydomonas?

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  16. Which one of the following is wrong statement ?

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  17. Yeast is used in the production of

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  18. A nitrogen fixing microbe associated with Azolla in rice fields is

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  19. The cyanobacteria are also referred to as

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  20. Which one of the following animals is corectly matched with its partic...

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