Q11 of 48 Page 88

To get a carpet like grass lawns are mowed regularly. Is there any scientific explanation for this?

To get a carpet like grass, lawns are mowed regularly as mowing (process of cutting the grass) causes decapitation that promotes the growth of lateral buds. The process of Decapitation of plants leads to the inactivation of axillary buds and promotes growth of lateral buds giving a carpet like appearance.


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9

In animals there are special glands secreting hormones, whereas there are no glands in plants. Where are plant hormones formed? How are the hormones translocated to the site of activity?

 10

Many discoveries in science have been accidental. This is true for plant hormones also. Can you justify this statement by giving an example? Also what term is used for such accidental findings?

 12

In a slide showing different types of cells can you identify which type of the cell may be meristematic and the one which is incapable of dividing and how?

 13

A rubber band stretches and reverts back to its original position. Bubble gum stretches, but it would not return to its original position. Is there any difference between the two processes? Discuss it with respect to plant growth (Hint: Elasticity (reversible) Plasticity (irreversible))