Match List - I with List - II.

Choose the correct answer from the options given below :

(1). (a)- (iü); (b) - (iv); (c) - (i); (d) - (ii)
(2). (a)- (iv); (b) - (ii); (c) - (ii); (d) - ()
(3). (a)- (iv); (b) - (i); (c) - (ii); (d) - (iii)
(4). (a)- (iü); (b) - (i); (c)- (ii); (d) - (iv)

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

The vascular cambium normally gives rise to

(1). periderm
(2). phelloderm
(3). primary phloem
(4). secondary xylem

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Plants which produce characteristic pneu-matophores and show vivipary belongs to

(1). hydrophytes.
(2). mesophytes.
(3). halophytes.
(4). psammophytes.

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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.

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

(1). Differentiation
(2). Somatic hybridization
(3). Totipotency
(4). Micropropogation

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Movement and accumulation of ions across a membrane against their concentration gradient can be explained by

(1). Facilitated Difusion
(2). Passive Transport
(3). Active Transport
(4). Osmosis

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

(1). Gibberellic Acid
(2). Zeatin
(3). Abscisic Acid
(4). Indole-3-butyric Acid

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

(1). Kinetin
(2). Ethylene
(3). 2,4-D
(4). GA₃

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Match List I with List II :

Choose the correct answer from the options given below

(1). A-II, B-III, C-IV, D-I
(2). A-III, B-I, C-IV, D-II
(3). A-II, B-IV, C-I, D-III
(4). A-III, B-II, C-I, D-IV

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

The gaseous plant growth regulator is used in plants to:

(1). Speed up the malting process
(2). Promote root growth and root hair formation to increase the absorption surface
(3). Help overcome apical dominance
(4). Kill dicotyledonous weeds in the fields

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Which one of the following plants does not show plasticity?

(1). Cotton
(2). Coriander
(3). Buttercup
(4). Maize

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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?

(1). ABA
(2). Gibberellin
(3). Ethylene
(4). Cytokinin

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

(1). Elasticity
(2). Flexibility
(3). Plasticity.
(4). Maturity

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

The site of perception of light in plants during photoperiodism is:

(1). Shoot apex
(2). Stem
(3). Axillary bud
(4). Leaf

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

The plant hormone used to destroy weeds in a field is:

(1). IAA
(2). NAA
(3). 2, 4 -D
(4). IBA

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

(1). Abscisic acid
(2). Phenolic acid
(3). Para-ascorbic acid
(4). Gibberellic acid

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

(1). Gibberellin
(2). Ethylene
(3). Abscisic acid
(4). Cytokinin

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their:

(1). Growth response
(2). Defence action
(3). Effect on reproduction
(4). Nutritive value

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

What is the site of perception of photoperiod necessary for induction of flowering in plants ?

(1). Pulvinus
(2). Shoot apex
(3). Leaves
(4). Lateral buds

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

(1). Gibberellin and Cytokinin
(2). Gibberellin and Abscisic acid
(3). Cytokinin and Abscisic acid
(4). Auxin and Ethylene

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Pneumatophores occur in

(1). submerged hydrophytes.
(2). carnivorous plants.
(3). free-floating hydrophytes.
(4). halophytes.

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

Which of the following facilitates opening of stomatal aperture ?

(1). Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells
(2). Contraction of outer wall of guard cells
(3). Decrease in turgidity of guard cells
(4). Radial orientation of cellulose microfibrils in the cell wall of guard cells

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

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

(1). gibberellic acid.
(2). cytokinins.
(3). ethylene.
(4). auxins.

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02

The Avena curvature is used for bioassay of

(1). GA₃
(2). IAA
(3). ethylene
(4). ABA

Number of Attempts: 2

Correct Attempts: 1

Time Taken: 00:04

Average Time: 00:02