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Roots obtain oxgyen from air soil for re...

Roots obtain oxgyen from air soil for respiration , In the absence or deficiency of `O_(2)` , root growth is restricted or completely stopped. How do the plants growing in marsh lands or swamps obtain their `O_(2)` required for root respiration ?

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Plants like Rhizophora, which grow in marshy or swamp area bear pneumatophores or respiratory roots. These roots come out of soil, grow vertically and bear respiratory pores (pneumathodes) for respiration.
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The trajectory of a projectile is given by y=x tantheta-(1)/(2)(gx^(2))/(u^(2)cos^(2)theta) . This equation can be used for calculating various phenomen such as finding the minimum velocity required to make a stone reach a certain point maximum range for a given projection velocity and the angle of projection required for maximum range. The range of a particle thrown from a tower is define as the distance the root of the tower and the point of landing. From a certain tower of unknown height it is found that the maximum range at a certain projection velocity is obtained for a projection angle of 30^(@) and this range is 10sqrt(3)m . The projection velocity must be

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MODERN PUBLICATION-MORPHOLOGY OF FLOWERING PLANTS -NCERT FILE ( NCERT EXEMPLAR PROBLEM (B. VERY SHORT ANSWER TYPE QUESTIONS) )
  1. Roots obtain oxgyen from air soil for respiration , In the absence or ...

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  2. Write floral formula for a flower which is bisexual, actinomorphic sep...

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  3. In Opuntia, the stem is modified into a flattened green structure of p...

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  4. In swampy areas like the sunderbans in West Bengal, plants bear specia...

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  5. In aquatic plants like Pistia and Eichhornia, leaves and roots are fou...

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  6. Reticulate and parallel venation are the characteristic of …… and …….....

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  7. Which parts of ginger and onion are edible?

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  8. In epigynous flower , ovary is situated below the ……… .

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  9. Add the missing floral organ of the given floral floral formula of Fab...

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  10. Name the body part modified for food storage in the Carrot

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  11. Name the body part modified for food storage in the Colocasia

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  12. Name the body part modified for food storage in the Sweet potato

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  13. Name the body part modified for food storage in the Asparagus

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  14. Name the body part modified for food storage in the Radish

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  15. Name the body part modified for food storage in the Potato

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  16. Name the body part modified for food storage in the Dahlia

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  17. Name the body part modified for food storage in the Turmeric

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  18. Name the body part modified for food storage in the Gladiolus

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  19. Name the body part modified for food storage in the Ginger

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  20. Name the body part modified for food storage in the Portulaca

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