NEET Botany Plant Growth And Development Class 11 Questions

Match the following phytohormones with their applications and choose the correct option.

Auxin was first isolated by

Arrange the following phases during developmental process in a plant cell in correct sequence and choose the correct option. senescence (A), death (B), maturation (C), plasmatic growth (D), meristematic cell (E)

Growth is measured in terms of its length in case of

In most higher plants, the growing apical bud inhibits the growth of the lateral buds, this phenomenon known as

Exponential growth can be expressed as :

Math the following :

In the light of given statements, choose the correct answer from the options given below. Statement I: In tomatoes, parthenocarpy can be induced by auxins. Statement II: Abscission of older mature leaves is promoted by auxins.

Which one of the following is not a characteristic of plant cells in the phase of elongation?

Which one of the following phytohormones promotes nutrient mobilization which helps in the delay of leaf senescence in plants?

Read the following statements on plant growth and development. A. Parthenocarpy can be induced by auxins. B. Plant growth regulators can be involved in promotion as well as inhibition of growth. C. Dedifferentiation is a pre-requisite for re-differentiation. D. Abscisic acid is a plant growth promoter. E. Apical dominance promotes the growth of lateral buds. Choose the option with all correct statements.

Formation of interfascicular cambium from fully developed parenchyma cells is an example for

Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxin

Spraying sugarcane crop with which of the following plant growth regulators, increases the length of stem, thus, increasing the yield? (1) Cytokinin (2) Abscisic acid (3) Auxin (4) Gibberellin

Spraying of which of the following phytohormone on juvenile conifers helps in hastening the maturity period, that leads to early seed production?

Which hormone promotes internode/petiole elongation in deep water rice?

The gaseous plant growth regulator is used in plants to:

Production of Cucumber has increased manifold in recent years. Application of which of the following phytohormones has resulted in this increased yield as the hormone is known to produce female flowers in the plants:

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

Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.

The process of growth is maximum during:

Which of the following is not an inhibitory substance governing seed dormancy?

It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?

Fruit and leaf drop at early stages can be prevented by the application of

Which of the following enhances or induces fusion of protoplasts?

What causes a green plant exposed to the light, on only one side, to bend toward the source of light as it grows?

Typical growth curve in plants is

Which one of the following growth regulators is known as ‘stress hormone’?

Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly-cut coleoptile stumps. Of what significance is this experiment?

A few normal seedlings of tomato were kept in a dark room. After a few days they were found to have become white-colored like albinos. Which of the following terms will you use to describe them?

The pineapple which under natural conditions is difficult to blossom has been made to produce fruits throughout the year by application of:

Which of the following statements is not true about somatic embryogenesis?