PLANT GROWTH AND DEVELOPMENT

Question 1

Which plant hormone is a derivative of Carotenoid

Answer 1

Abscisic acid

Question 2

Which hormones have a synergistic effect in cell division

Answer 2

Auxin and Cytokinin

Question 3

Which hormones promote abscission

Answer 3

Ethylene and ABA

Question 4

Heterophylly is seen in

Answer 4

Coriander, cotton, larkspur

Question 5

Auxin was 1st isolated from

Answer 5

Human urine

Question 6

The precursor of Auxin

Answer 6

Tryptophan

Question 7

Precursor of Abscisic Acid

Answer 7

Violaxanthin

Question 8

Precursor of Ethylene

Answer 8

Methionine

Question 9

Cytokinin is a ___ derivative

Answer 9

Cytokinin is an Adenine derivative

Question 10

Cytokinin was discovered by

Answer 10

F Skoog

Question 11

Which PGR is a carotenoid derivative

Answer 11

Abscisic acid

Question 12

Which fungal pathogen caused the bakane disease of rice seedlings

Answer 12

Gibberella Fujikuroi

Question 13

Which PGR causes stem and petiole elongation in submerged aquatic plants

Answer 13

Ethylene

Question 14

___ helps to promote nutrient mobilisation which helps to____

Answer 14

Cytokinin helps in nutrient mobilisation which help to delay senescence

Question 15

Which test is used for bioassay of Auxin

Answer 15

Avena curvature test

Question 16

Which test is used for Bioassay of GA

Answer 16

Induction of alpha amlyase in barley endosperm test

Question 17

Test for bioassay of ethylene

Answer 17

Triple response test

Question 18

Test for Bioassay of ABA

Answer 18

Cotton explant test

Question 19

Which Auxin is k/a Agent Orange

Answer 19

2,4 D

Question 20

Which hypothetical compound helps to induce flowering

Answer 20

Florigen

Question 21

The precursor of Gibberellic acid is

Answer 21

Acetyl CoA

Question 22

Which PGR decreases sensitivity of roots to gravity

Answer 22

Ethylene

Question 23

Which PGR is present in coconut milk and corn kernes in form of zeatin

Answer 23

Cytokinin

Question 24

Which PGR is present in coconut milk and corn kernes in form of zeatin

Answer 24

Cytokinin

Question 25

The PGR that is used to increase malt yield is

Answer 25

GA

Question 26

Kinetin is a natural cytokinin…

Answer 26

Kinetin is a synthetic cytokinin, it doesn’t occur naturally in plants. Zeatin on the other hand is a natural cytokinin

Question 27

When seeds don’t germinate due to intrinsic condition it is k/a

Answer 27

Dormancy

Question 28

The rise in rate of respiration is called as __ and which PGR promotes it

Answer 28

The rise in rate of respiration is called RESPIRATORY CLIMATIC and it is promoted by Ethylene

Question 29

The plant hormone responsible to increase the shelf life of fruits flowers
etc is

Answer 29

Cytokinin

Question 30

The PGR that helps to promote bolting is

Answer 30

Gibberellins

Question 31

What is vernalisation

Answer 31

Vernalisation is the phenomenon of promoting flowering by a period of low temperature. It helps to prevent precocious reproductive development late in growing season

Question 32

Vernalisation is seen in which varieties of plant

Answer 32

It is seen in winter varieties and Biennial plants

Question 33

Examples of long day plants

Answer 33

Wheat, radish sugarbeet and henbane

Question 34

Short day plants examples

Answer 34

Soyabean and tobacco

Question 35

Examples of day neutral plants

Answer 35

Tomato, pepper and cucumber

Question 36

Stimulus of vernalisation is perceived by

Answer 36

Mature stem apex and Embryo of seed

Question 37

Which plant hormone is used to induce flowering and for synchronising fruit set in pineapples

Answer 37

Ethylene