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Which aquatic fern performs nitrogen fix...

Which aquatic fern performs nitrogen fixation :

A

Azolla

B

Nostoc

C

Salvia

D

Salvinia

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The correct Answer is:
A
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AAKASH INSTITUTE-PLANT KINGDOM -ASSIGNMENT SECTION -C (Previous Years Questions)
  1. The walking fern is so named because

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  2. Plants having vascular tissues but lacking seeds are

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  3. Which aquatic fern performs nitrogen fixation :

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  4. A well developed archegonium with neck consisting of 4 - 6 rows and ne...

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  5. Plants reproducing by spores such as mosses and ferns are grouped unde...

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  6. Which of the following is a vascular cryptogam

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  7. Heterospory and seed habit are often discuseed in relation to a struc...

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  8. What is common in all the three Funaria, Dryopteris and Ginkgo

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  9. In Pinus , the wing of the seed develops from

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  10. The smallest plant group gymnosperms has how many species?

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  11. Which one of the following statements about Cycas is incorroct ?

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  12. Largest sperms in the plants world are found in

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  13. Transfusion tissue is present in the leaves of

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  14. The endosperm of gymnosperm is

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  15. Plant group with largest ovule , largest tree , and largest gametes is

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  16. Which of the following plants produces seeds but not flowers : -

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  17. Cycas has two cotyledons but it is not included under angiosperms beca...

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  18. Which one of the following is a living fossil

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  19. Which of the following is without exception in angiosperms ?

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  20. Which one of the following pairs of plants are not seed producers?

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