Match the plant hormones in Column I with their primary function in Column II. Column I Column II P. Abscisic acid i. Promotes disease resistance Q. Ethylene ii. Maintains seed dormancy R. Cytokinin iii. Promotes seed germination S. Gibberellins iv. Promotes fruit ripening v. Inhibits leaf senescence Choose the correct combination:

P - ii , Q - iv , R - v , S - iii

P - iii , Q - iv , R - i , S - ii

P - v , Q - iii , R - ii , S - i

P - iv , Q - ii , R - iii , S - v

A primary root grows from 10 cm to 38 cm in a week. Calculate the relative growth rate over the period.

Relative growth rate is the growth of the system (plant root) per unit time expressed on a common basis. For the given primary root Growth taken place = 38 - 10 = 28 cm Time (Period) = one week ( 7 days) Growth rate = 28 / 7 = 4 cm per day Initial growth rate = 10 cm Relative growth rate = 4 / 10 × 100 = 40 %

EASY

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Auxanometer is used to measure

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Important Questions on Plant Growth and Mineral Nutrition

EASY

Biology>Physiology>Plant Growth and Mineral Nutrition>Plant Growth

When a plant species is grown in shade tends to produce thinner leaves with more surface area, and when grown under abundant sunlight starts producing thicker leaves with reduced surface area. This phenomenon is an example of

HARD

Biology>Physiology>Plant Growth and Mineral Nutrition>Plant Growth

Write the types of induced plant movements by an external and directional stimulus with example.

EASY

Biology>Physiology>Plant Growth and Mineral Nutrition>Plant Growth

In tissue culture experiments, leaf mesophyll cells are put in a culture medium to form callus. This phenomenon may be called as:

EASY

Biology>Physiology>Plant Growth and Mineral Nutrition>Plant Growth

The orientation to light of a non-motile organism or part of its body is called:

EASY

Biology>Physiology>Plant Growth and Mineral Nutrition>Plant Growth

The process of growth is maximum during

EASY

Biology>Physiology>Plant Growth and Mineral Nutrition>Plant Growth

Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called:

EASY

Biology>Physiology>Plant Growth and Mineral Nutrition>Plant Growth

Typical growth curve in plants is:

HARD

Biology>Physiology>Plant Growth and Mineral Nutrition>Plant Growth

Choose the correct statements.
(A) Assyrians recorded information of crop plants in the picture form.
(B) Nehemiah Grew studied the anatomy of plant tissue.
(C) Bouskein refers to cattle.
(D) Application of physical and chemical principles developed new branches of Botany like genetics.

EASY

Biology>Physiology>Plant Growth and Mineral Nutrition>Plant Growth

Which among the following is not dedifferentiated?

EASY

Biology>Physiology>Plant Growth and Mineral Nutrition>Plant Growth

Formation of interfascicular cambium and cork cambium from parenchyma is phenomenon of

EASY

Biology>Physiology>Plant Growth and Mineral Nutrition>Plant Growth

Which one of the following plants does not show plasticity?

HARD

Biology>Physiology>Plant Growth and Mineral Nutrition>Plant Growth

Within the exponential phase of growth, if the initial surface area and the growth rate of a leaf are

10 {mm}^{2}

and

0.015 {mm}^{2} / hour

respectively, the area of the leaf after

4

days would range from

MEDIUM

Biology>Physiology>Plant Growth and Mineral Nutrition>Plant Growth

Match the plant hormones in Column I with their primary function in Column II.

Column I	Column II
P. Abscisic acid	i. Promotes disease resistance
Q. Ethylene	ii. Maintains seed dormancy
R. Cytokinin	iii. Promotes seed germination
S. Gibberellins	iv. Promotes fruit ripening
	v. Inhibits leaf senescence