Embibe Experts Solutions for Chapter: Plant Growth and Development, Exercise 3: Level 3

What is not true about auxin?

Read the given statements and find incorrect ones
(i) Cytokinin is primarily concerned with cell division.
(ii) ${\mathrm{C}}_2{\mathrm{H}}_4$ breaks seed and bud dormancy
(iii) ABA stimulates the opening of stomata.
(iv) ${\mathrm{C}}_2{\mathrm{H}}_4$ initiates germination in peanut seeds, sprouting of potato tubers.
(v) ABA is synergistic to GA.

Match Column I with II and select the correct option from the codes given below.

What will be effect on curvature if gelatin is placed between coleoptile tips and the coleoptile and then exposed to unidirectional light?

Cabbage is a biennial plant that produces flowers in the second year of growth. In an attempt to make it flower in a single year, four potted plants of cabbage were subjected to different temperatures for several days as given in the table.

Which potted plant will show flowering?

A young dicot seedling (e.g., soyabean) is laid horizontally on a surface and is subjected to gravity stimulus. The shoot bends in upward direction and the root bends in downward direction. Which out of the following is the possible reason for this movement?

Seed germination is the sprouting of a seed and growth of the embryo present inside the seed into a seedling or young plant capable of independent existence. Refer to the given figure showing seed germination and mark the incorrect option.

Charles Darwin and his son, Francis experimented with phototropism of grass seedlings by placing a metal foil blindfold over different parts of the seedling's coleoptile. A simplified version of their results is shown below. Which of the following statements best explains their results?