EASY

Earn 100

Explain the adaptations of venus fly trap to prevent unnecessary closing.

Important Questions on Control and Coordination

EASY

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Internodal elongation is stimulated by

EASY

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Dwarfness can be controlled by treating the plant with

MEDIUM

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Read the following statements:

(i) It is used to prepare weed-free lawn.

(ii) It promotes the abscission of older mature leaves and fruits. The above functions are carried out by

EASY

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

To speed up the malting process in the brewing industry the growth hormone used is:

MEDIUM

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Functions of auxins include:

EASY

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Phototropic Curvature is the result of uneven distribution of

EASY

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Bolting, i.e., internode elongation just prior to flowering in beet, cabbage and many rosette plants, is promoted by

MEDIUM

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Differentiate between tropic and nastic movements in plants. Give one example of each.

MEDIUM

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Spraying sugarcane with gibberellins increases the yield by as much as

20

tonnes per acre. GA performs it by

MEDIUM

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Match the following.

Column – I	Column – II
(a) IAA	(i) Overcoming genetic dwarfing
(b) GA	(ii) Most widely used PGR in agriculture
(c) Cytokinin	(iii) Induced parthenocarpy in tomato
(d) Ethylene	(iv) Coconut milk factor

MEDIUM

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

The term ‘antiauxin’ refers to

EASY

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

The hormone responsible for apical dominance is
Question Image

EASY

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Choose the correct option for auxin.

MEDIUM

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Removal of auxin source demonstrates that leaf abscission is___________ by auxin, and apical dominance is_________ by auxin.

EASY

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Plant hormone that can be used to increase length of grape stalk and improvement in the shape of fruit is:

MEDIUM

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Read the given statements and select the correct option.
Statement 1: Elongation of reduced stem is possible due to application of gibberellin hormone.
Statement 2: Gibberellin stimulates cell division and cell elongation.

MEDIUM

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

How is the movement of the leaves of the sensitive plant different from the movement of a shoot towards the light?

MEDIUM

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Read the following statements, and select the correct option.

A. $2, 4 - D$ is widely used to kill dicotyledonous weeds but does not affect mature monocotyledonous plants.

B. $A B A$ helps seed understand desiccation and other factors unfavorable for growth.

EASY

Biology>Physiology P2>Control and Coordination>Control and Coordination in Plants

Auxins that have been isolated from plants are

MEDIUM