JOIN ADRE 2.0 Telegram Group

Plant Physiology MCQs | Plant Physiology Short Questions and Answers

Questions
41 Translocation of carbohydrate nutrients usually occurs in the form of
A glucose
B maltose
C starch
D sucrose

Answer: sucrose
42 Maximum solar energy is trapped by
A planting trees
B cultivating crops
C growing algae in tanks
D growing grasses

Answer: growing algae in tanks
Advertisement
Article and Schedule Quiz Start Test!

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

43 Stomata open and close due to
A circadian rhythm
B genetic clock
C pressure of gases inside the leaves
D turgor pressure of guard cells

Answer: turgor pressure of guard cells
44 Phytochrome is involved in
A phototropism
B photorespiration
C photoperiodism
D geotropism

Answer: photoperiodism
45 Minerals absorbed by root move to the leaf through
A xylem
B phloem
C sieve tubes
D none of the above

Answer: xylem
46 The size of chlorophyll molecule is
A head 15 x 15 A, tail 25 A
B head 20 x 20 A, tail 25 A
C head 15 x 15 A, tail 20 A
D head 10 x 12 A, tail 25 A

Answer: head 15 x 15 A, tail 20 A
47 The substrate for photorespiration is
A phosphoglyceric acid
B glycolate
C serine
D glycine

Answer: glycolate
48 In C4 plants, Calvin cycle operates in
A stroma of bundle sheath chloroplasts
B grana of bundle sheath chloroplasts
C grana of mesophyll chloroplasts
D stroma of mesophyll chloroplasts

Answer: stroma of bundle sheath chloroplasts
49 Greatest producers of organic matter are
A crop plants
B forests
C plants of the land area
D phytoplankton of oceans

Answer: phytoplankton of oceans
50 A very efficient converter of solar energy with net productivity of 204 kg/m2 or more is the crop
A wheat
B sugarcane
C rice
D bajra

Answer: sugarcane
51 A bottle filled with previously moistened mustard seeds and water was screw capped tightly and kept in a corner. It blew up suddenly after about half an hour. The phenomenon involved is
A diffusion
B imbibition
C osmosis
D D.P.D.

Answer: imbibition
52 The principal pathway of water translocation in angiosperms is
A sieve cells
B sieve tube elements
C xylem vessel system
D xylem and phloem

Answer: xylem vessel system
53 Which of the following movement is not related to auxin level?
A bending of shoot towards light
B movement of root towards soil
C nyctinastic leaf movements
D movement of sunflower head tracking the sun

Answer: nyctinastic leaf movements
54 Phototropic and geotropic movements are linked to
A gibberellins
B enzymes
C auxin
D cytokinins

Answer: auxin
55 Abscisic acid controls
A cell division
B leaf fall and dormancy
C shoot elongation
D cell elongation and wall formation

Answer: leaf fall and dormancy
56 Phytohormones are
A chemical regulation flowering
B chemical regulation secondary growth
C hormones regulating growth from seed to adulthood
D regulators synthesised by plants and influencing physiological processes

Answer: regulators synthesised by plants and influencing physiological processes
57 Highest auxin concentration occurs
A in growing tips
B in leaves
C at base of plant organs
D in xylem and phloem

Answer: in growing tips
58 Kranz anatomy is typical of
A C4 plants
B C3 plants
C C2 plants
D CAM plants

Answer: C4 plants
59 Which one is a C4-plant?
A papaya
B pea
C potato
D maize/corn

Answer: maize/corn
60 The first carbon dioxide acceptor in C4-plants is
A phosphoenol-pyruvate
B ribulose 1, 5-diphosphate
C oxalo-acetic acid
D phosphoglyceric acid

Answer: phosphoenol-pyruvate

ADRE 2.0 FULL LENGTH MOCK TEST

Take Mock Tests

Missiles Mock Test Start Test!
SSC MTS Mock Test Start Test
IBPS CLERK MOCK TEST Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH) Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi) Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH) Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH) Start Test!
IB Security Assistant Mock test 1 (english) Start Test!
UP POLICE CONSTABLE MOCK TEST 1 Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI) Start Test!
Advertisement
Assam Direct Recruitment Test Series