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

(1).does not affect mature monocotyledonous plants

(2). can help in cell division in grasses, to produce growth

(3). promotes apical dominance

(4). promotes abscission of mature leaves only

2. Given below are two statements:
Statement I: Parenchyma is living but collenchyma is dead tissue.
Statement II: Gymnosperms lack xylem vessels but presence of xylem vessels is the characteristic of angiosperms.
In the light of the above statements, choose the correct answer from the options given below:

(1).Statement I is true but Statement II is false.

(2). Statement I is false but Statement II is true.

(3). Both Statement I and Statement II are true.

(4). Both Statement I and Statement II are false.

3. The capacity to generate a whole plant from any cell of the plant is called

(1).Differentiation

(2). Somatic hybridization

(3). Totipotency

(4). Micropropogation

4. 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

5. 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.

(1).B, D, E only

(2). A, B, C only

(3). A, C, E only

(4). A, D, E only

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

(1).Cytokinin

(2). Ethylene

(3). Abscisic acid

(4). Gibberellin