plant growth

Question 1

parthenocarpy is induced by

Answer 1

auxin

Question 2

flowering in pineapple is induced by

Answer 2

auxin

Question 3

auxins were discovered by

Answer 3

F. W. Went

Question 4

xylem differentiation is induced by

Answer 4

auxin

Question 5

examples for synthetic auxins

Answer 5

2,4 Dichlorophenoxyacetic acid and Napthaleneacetic acid

Question 6

2,4 D is effective against

Answer 6

dicot weeds

Question 7

_____ gibberellins have been derived from fungi and other organisms

Answer 7

100

Question 8

gibberellin was disovered by __

Answer 8

kuroswowa fujikorai

Question 9

gibberellin causes ____ disease in rice seedlings

Answer 9

bakanae

Question 10

most common gibberellin is ___

Answer 10

GA3

Question 11

All gibberellins are _____

Answer 11

acidic

Question 12

increase in length of grape stalks by

Answer 12

gibberellins

Question 13

increase in internode length of sugarcane which increases the productivity ____

Answer 13

20 tonnes per acre

Question 14

improves shape of apple

Answer 14

gibberellins

Question 15

promotes bolting (internode elongation) in plants with rosette habit

Answer 15

gibberellins

Question 16

spraying GA _____ hastens maturity period

Answer 16

juvenile confiers

Question 17

___ used in brewing industry

Answer 17

gibberellins

Question 18

___ is a synthetic cytokinin

Answer 18

kinetin

Question 19

kinetin was discovered in ____

Answer 19

autoclaved herring sperm

Question 20

cytokinins are chemically ____

Answer 20

modified adenines

Question 21

zeatin was disovered in

Answer 21

corn kernels and coconut milk

Question 22

cytokinins are formed in regions of ___

Answer 22

cell division

Question 23

cytokinins overcome ____

Answer 23

apical dominance

Question 24

auxin is antagonistic to

Answer 24

cytokinin

Question 25

cytokinin prevents ___

Answer 25

senescence by nutrient mobilization

Question 26

increase in chloroplast in leaves by

Answer 26

cytokinins

Question 27

increase in lateral buds and adventitious shoot by

Answer 27

cyrokinins

Question 28

kinetin is chemically

Answer 28

N6 furfuryl amino purine

Question 29

kinetin was disovered by

Answer 29

skoog and miller

Question 30

ethylene is ___

Answer 30

gaseous

Question 31

increase in female flowers of cucumber by

Answer 31

ethylene

Question 32

increase in root hair formation

Answer 32

ethylene

Question 33

rooting in stem cuttings by

Answer 33

auxins

Question 34

internode/petiole elongation in deep water rice plants

Answer 34

ethylene

Question 35

respiratory climactic means ___ and it is induced by ___

Answer 35

increased rate of respiration during ripening; ethylene

Question 36

ethylene promotes abcission and fruit drop in

Answer 36

cherry, walnut

Question 37

thinning of cotton by ___

Answer 37

etephon

Question 38

sprouting in potato tuber by

Answer 38

ethylene

Question 39

ethylene initiates seed germination in

Answer 39

peanut

Question 40

flowering in mango and synchronise fruit set in pineapple

Answer 40

ethylene

Question 41

abscisic acid promotes

Answer 41

seed dormancy

Question 42

ABA also called

Answer 42

stress hormone

Question 43

closure of stomata under water stress caused by

Answer 43

ABA

Question 44

ABA is antagonistic to

Answer 44

gibberellins

Question 45

___ plays a major role in seed development maturation and dormancy

Answer 45

ABA

Question 46

Heterophylly due to environment is seen in

Answer 46

buttercup

Question 47

leaves of juvenile is different from adults in

Answer 47

cotton, coriander, larkspur

Question 48

development = ___ + ___

Answer 48

growth + differentiation

Question 49

all cells arise from

Answer 49

zygote

Question 50

first step in development

Answer 50

seed germination

Question 51

type of growth in which only one cell continues to divide

Answer 51

arithmetic growth

Question 52

j shaped growth curve is

Answer 52

geometric

Question 53

early stages of zygote development shows

Answer 53

geometric

Question 54

elongation of root at constant rate is

Answer 54

arithmetic

Question 55

plant growth is

Answer 55

indeterminate

Question 56

one maize cell produces

Answer 56

17,500 cells

Question 57

one watermelon seed can grow

Answer 57

3,50,000 times in size

Question 58

cell growth is practically

Answer 58

increase in protoplasm