Plant Growth And Development
339 Questions
Start Allen Test
Q301
Allen
ANALYTICAL QUESTIONS
Match the Columns
Match the columns :
| Column-I | Column-II | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
A.
a-iv,b-iv,c-iii,d-ii,e-i
B.
a-ii,b-iii,c-iv,d-iv,e-i
C.
a-i,b-iv, c-ii, d-iv,e-iii
D.
a-ii,b-iv, c-i, d-iii,e-iv
Q302
Allen
ANALYTICAL QUESTIONS
MCQ
Assertion: Development is a term that includes all changes that an organism goes through during its life cycle.
Reason: Plants follows different pathways in response to environment or phases of life to form different kinds of structures.
A.
Both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B.
Both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
C.
Assertion is True but the Reason is False.
D.
Both Assertion & Reason are False.
Q303
Errorless
Growth
MCQ
The given figure indicates the stages of seed germination
Identify A, B, C and D respectively
A.
Root hair, Cotyledons, Epicotyl and Hypocotyl
B.
Mesocotyl, Cotyledons, Epicotyl and Hypocotyl
C.
Radicle, Cotyledons, Epicotyl and Hypocotyl
D.
Plumule, Cotyledons, Epicotyl and Hypocotyl
Q304
Errorless
Growth
MCQ
Which two factors primarily affect the developmental phase of growth of plants
A.
Light and temperature
B.
Rainfall and temperature
C.
Light and wind
D.
Temperature and relative humidity
Q305
Errorless
Growth
MCQ
The growth involves
A.
Cell division
B.
Cell enlargement
C.
Cell maturation
D.
All the ahove
Q306
Errorless
Growth
MCQ
Where would you look for active cell division in plants
A.
In the pith cells
B.
In the cells of cortex
C.
In the internodal region
D.
At the tip of root and shoot
Q307
Errorless
Growth
MCQ
See the figure and choose the correct option from table
A.
A-Leaf (AGR-0.5, RGR-100%), B-Leaf (AGR-1.5, RGR-100%)
B.
A-Leaf (AGR-5, RGR-100%), B-Leaf (AGR-5, RGR-10%)
C.
A-Leaf (AGR-100%, RGR-5), B-Leaf (AGR-10%, RGR-5)
D.
A-Leaf (AGR-1%, RGR-1), B-Leaf (AGR-2%, RGR-2)
Q308
Errorless
Growth
MCQ
In lag phase, the growth is
A.
Slowest
B.
Fastest
C.
Intermediate
D.
No growth at all
Q309
Errorless
Auxin
MCQ
Apical dominance in higher plants is due to
A.
Balance between auxin and cytokinin
B.
Enzyme activity and metabolism
C.
Carbohydrates
D.
Photoperiodism
Q310
Errorless
Auxin
MCQ
See the following diagram
After two weeks the appearance of the shoot would be [NCERT]
After two weeks the appearance of the shoot would be [NCERT]
A.
B.
C.
D.
Q311
Errorless
Auxin
MCQ
Who among the following discovered the Avena curvature test to find out the concentration of auxins [NCERT]
A.
F.W. Went
B.
L.J. Audus
C.
K.V. Thimman
D.
F. Skoog
Q312
Errorless
Auxin
MCQ
Which of the following is not naturally occurring plant hormone?
A.
$2,4-D$
B.
$GA_2$
C.
Gibberellin
D.
IAA
Q313
Errorless
Auxin
MCQ
A well known naturally occuring auxin is or A natural growth regulator (hormone) is
A.
2, 4āD
B.
Indole acetic acid
C.
NAA
D.
Maleic hydrazide
Q314
Errorless
Auxin
MCQ
Auxins inhibits the growth of
A.
Apical bud
B.
Lateral axillary buds
C.
Roots on stem cuttings
D.
Parthenocarpic development of fruits
Q315
Errorless
Auxin
MCQ
Phototropism in shoots is attributed to [NCERT]
A.
Auxin
B.
Gibberellins
C.
Cytokinins
D.
Abscisic acid
Q316
Errorless
Auxin
MCQ
Levitt performed experiments. He observed that auxin treated cells were able to absorb water even when kept in hypertonic solution. Which explains this observation best
A.
Auxin treated cells lose selective permeability
B.
ATP production increases and therefore much energy is available for active absorption
C.
Auxin lowers the water potential of cells
D.
Auxin increases the solute potential of cells
Q317
Errorless
Cytokinin
MCQ
Match the following and choose the correct combination Column I Column II
| Column-I | Column-II | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
A.
AāR, BāS, CāP, DāQ
B.
AāQ, BāP, CāS, DāR
C.
AāP, BāQ, CāR, DāS
D.
AāS, BāP, CāQ, DāR
E.
AāR, BāP, CāS, DāQ
Q318
Errorless
Ethylene
MCQ
Pineapple can be made to flower in off season by
A.
Ethylene/NAA
B.
Zeatin
C.
Short day
D.
Temperature
Q319
Errorless
Ethylene
MCQ
A higher proportion of ethylene is found in
A.
Ripening banana
B.
Green banana
C.
Green apple
D.
Fresh potato tuber
Q320
Errorless
NCERT(Exemplar Questions)
MCQ
Monocarpic plants are those which
A.
Bear flowers with one ovary
B.
Flower once and die
C.
Bear only one flower
D.
All of the above
Q321
Errorless
NCERT(Exemplar Questions)
MCQ
The affect of apical dominance can be overcome by which of the following hormone
A.
IAA
B.
Ethylene
C.
Gibberellin
D.
Cytokinin
Q322
Errorless
NCERT(Exemplar Questions)
MCQ
Match the following
| Column-I | Column-II | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
A.
A-P, B-R, C-T, D-Q, E-P
B.
A-T, B-R, C-S, D-Q, E-P
C.
A-S, B-P, C-T, D-R, E-Q
D.
A-T, B-R, C-Q, D-P, E-S
Q323
Errorless
NCERT(Exemplar Questions)
MCQ
Apples are generally wrapped in waxed paper to [NCERT]
A.
Prevent sunlight for changing its colour
B.
Prevent aerobic respiration by checking the entry of O2
C.
Prevent ethylene formation due to injury
D.
Make the apples look attractive
Q324
Errorless
NCERT(Exemplar Questions)
MCQ
Growth can be measured in various ways. Which of these can be used as parameters to measure growth
A.
Increase in cell number
B.
Increase in cell size
C.
Increase in length and weight
D.
All the above
Q325
Errorless
NCERT(Exemplar Questions)
MCQ
The term synergistic action of hormones refers to
A.
When two hormones act together but bring about opposite effects
B.
When two hormones act together and contribute to the same function
C.
When one hormone affects more than one function
D.
When many hormones bring about any one function