plant growth,hormones

Question 1

Instrument used to measure growth in length of plant

Answer 1

Auxanometer

Question 2

tracheary element consists of

Answer 2

strong elastic ligno-cellulosic secondary cell wall

Question 3

dedifferentiated tissue example

Answer 3

interfascicular vascular cambium,cork cambium,wound cambium

Question 4

redifferentiation tissue examples

Answer 4

secondary phloem,secondary xylem,cork , sec cortex

Question 5

plasticity is seen in

Answer 5

cotton,coriander and larkspur , buttercup

Question 6

auxin first isolated by

Answer 6

f.w. went from the tip of coleoptiles of oat seedling

Question 7

precursor of auxin

Answer 7

tryptophan

Question 8

foolish seedling disease is caused by

Answer 8

Gibberella fujikuroi

Question 9

first observed and extracted by

Answer 9

e.kurosawa and yakuta respectively

Question 10

precursor of gibbrellin

Answer 10

acetyl coa

Question 11

auxins remove weedicides which are

Answer 11

dicotyledonous

Question 12

Gibberellins induce stem elongation in

Answer 12

“rosette plants” like cabbage,beet

Question 13

Gibberellins induce quick maturity in

Answer 13

juvenile conifers

Question 14

synthetic Cytokinin discovery by

Answer 14

Miller from degraded product of autoclaved herring sperm DNA known as kinetin(adenine derivative)

Question 15

Cytokinins are derived from

Answer 15

tRNA

Question 16

Derivative of ethylene

Answer 16

Methionine

Question 17

ethylene is involved in the ripening of

Answer 17

climacteric fruits

Question 18

widely used compound as ethylene

Answer 18

ethenpon

Question 19

thinning of fruits due to application of

Answer 19

ethylene in cotton cherry and walnut

Question 20

bioassay of ethylene

Answer 20

triple response test

Question 21

bioassay of auxin

Answer 21

avena curvature test,root growth imbibition test

Question 22

bioassay of gibrellin

Answer 22

induction of alpha-amylase in barley endosperm test,dwarf maize test

Question 23

bioass of cytokinin

Answer 23

chlorophyll preservation test,tobacco pith culture test