- Which one is paired incorrectly?
(a) auxin – Isolated in pure form from human urine.
(b) Zeatin – Isolated from corn kernels.
(c) Gibberellins – Isolation from fungus Gibberella
fujikori
(d) abscisic acid – Isolated from ripened oranges
- Growth at cellular level, is principally a consequence of
increase in the amount of`
(a) protoplasm (b) DNa
(c) water (d) cell organelles.
- a primary root grows from 10 cm to 30 cm in a day.
calculate the absolute Growth rate (aGr) and relative
Growth rate (rGr) over the period.
AGR RGR
(a) 20 cm 300%
(b) 10 cm 200%
(c) 20 cm 200%
(d) 20 cm 30%
- Developmental heterophylly found in all, except
(a) larkspur (b) cotton
(c) coriander (d) all the these.
- credit for discovery of first plant growth hormone is
given to
(a) E. Kurosawa (b) F. Skoog
(c) F.W. Went (d) Yabuta.
- 2, 4 D widely used herbicide, kill
(a) monocot weeds
(b) dicot weeds
(c) algal and gymnospermous weeds
(d) all of these.
- how many of the following statements are true?
(i) Triple response bioassay is for aBa.
(ii) Ga 3 used to speed up malting process in brewing
industry.
(iii) Natural cytokinins are synthesised in meristems.
(iv) Synthetic auxins show non polar translocation.
(v) Ethylene promotes rapid internodal elongation in
deep water rice plants.
(a) One (b) Three (c) Two (d) Four
- Which of the following PGr is called stress hormone?
(a) aBa (b) Ethylene (c) Iaa (d) 2, 4 D
- Which of the following is not caused by ethylene?
(a) Initiate flowering and synchronise fruit setting in
pineapple.
(b) Promotes female flowers of cucumber.
(c) highly effective in fruit ripening.
(d) Breaks seed dormancy in pomes.
- hormone mainly responsible for morphogenesis is/are
(a) auxin (b) cytokinin
(c) aBa (d) both (a) and (b).
- Which of the following is LDP?
(a) Wheat (b) cotton (c) maize (d) rice
- In potato plant if dark period is interrupted by flash of
light the yield of crop
(a) increases
(b) decreases
(c) remain unaffected
(d) vary according to the season.
- Which of the following is true about plant movement
shown by Mimosa pudica on touch?
(a) Seismonastic movement
(b) movement of turgor variation
(c) One typed paratonic movement
(d) all of these
- active form of phytochrome is
(a) Pr (b) Pfr (c) P 680 (d) P700.
- callus is supplied with slightly more concentration of
cytokinin than auxin it will
(a) regenerate flowers (b) regenerates shoot
(c) regenerates roots (d) remains callus indefinitely.
- Which of the following is a wrong statement?
(a) Kinetin is chemically N-6 furfuryl amino purine.
(b) Bolting is artificially induced by G.a. treatment.
(c) cytokinin causes bolting.
(d) In tomato parthenocarpy is induced by auxin.
DIRECTIONS (Question No. 81 to 90)
These questions consists of two statements each, printed as
assertion and reason. While answering these questions you are
required to choose any one of the following four responses.
(a) If both assertion & reason are true and the reason
is a correct explanation of the assertion.
(b) If both assertion & reason are true but reason is
not a correct explanation of the assertion.
(c) If assertion is true but the reason is false.
(d) If both assertion & reason are false / if assertion is
false but reason is true.
- Assertion: Water that enters into a plant cell through
diffusion makes it turgid.
Reason: Entry of water into the cell through diffusion
develops wall pressure inside the cell.
