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Why is root said to be positively geotro...

Why is root said to be positively geotropic ?

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Because it grows towards the centre of gravity
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Why is recruitment said to be a positive process?

Consider the given statement regarding roots and choose the option having most correct statement I epiphytic roots are hygroscopic II climbing roots of ficus pumila secrete a gummy substance to stick to the support III roots are positively geotropic negatively phototropic and negatively hydrotopic IV cells of zone of elongation in a root loose their power to divide Choose the correct option

Most roots are positively geotropic The negatiely

Primary root is : 1. Positively geotropic 2. Positively hydrotropic 3. Negatively geotropic 4. Negatively hydrotropic Code:

Exampe of positive geotropism is

Give one example each of a plant part: (a) which is positively hydrotropic as well as positively geotropic (b) which is positively phototropic but negatively geotropic.

Example of positive geotropism is

Assertion : When a pot containing a plant is put in an inverted position for a long time, roots move downwards and stem upwards. Reason: This is due to negative geotropism of root and positive geotropism of stem.

BHARATI BHAWAN (ENGLISH)-PRACTICALS -MCQs
  1. Why is root said to be positively geotropic ?

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  2. What type of cells with you observe in an onion peel examined under a ...

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  3. On adding a drop of iodine solution to an onion peel ,

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  4. Why do we cover the onion peel placed on a glass slide with a coversli...

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  5. Which type of cells are there in the onion peel ?

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  6. An onion is a modified

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  7. When you observe the onion peel under the high magnification of the mi...

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  8. Why do we keep the onion peel on a drop of water ?

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  9. What kind of cells are the human cheek cells ?

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  10. Why is the flat end of a sterile toothpick used to scrape the inside s...

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  11. If the cheek cells are placed on a dirty slide, what do we observe und...

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  12. The oval dense structure present in the centre of a cheek cell is

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  13. The region between the nucleus and cell membrane in a cheek cell is oc...

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  14. Which of the following is not found in cheek cells ?

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  15. Which of the following features makes plant cells autotrophic ?

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  16. Compared to the onion peel cells, cheek cells are more irregular in sh...

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  17. Which of the following is an example of simple permanent tissue in pla...

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  18. Which of the following plant tissues generally have oval or spherical ...

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  19. Which of the following simple permanent tissues does not have closely ...

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  20. Intercellular spaces are usually found between

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  21. The main functions of parenchyma tissues are

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