All the following plants are biennials except:-
1. Sugarbeet
2. Cabbages
3. Carrots
4. Wheat
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIdentify the option where all the columns are not correctly matched:
|
PGR |
Nature |
Actions |
1. |
Auxin |
Indole compounds |
Apical dominance, Flowering in pineapples, Parthenocarpy in tomatoes |
2. |
Cytokinin |
Adenine derivative |
Cell division, Adventitious shoot formation, Delay in leaf senescene |
3. |
Gibberellin |
Terpene |
Increase in length |
4 . |
ABA |
Carotenoid derivative |
Closure of stomata in water stress, inducing seed dormancy, inducing flowering in mango |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe PGR used to induce parthenocarpy in tomatoes is:-
1. Auxin
2. Gibberellin
3. Cytokinin
4. ABA
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPrimary and secondary growth are inhibited by:
1. Auxins
2. Gibberellins
3. Abscisic acid
4. Cytokinins
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFruit and leaf drop at early stages can be prevented by the application of
1. Cytokinins
2. ethylene
3. auxins
4. gibberellic acid
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biologyyou are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?
(1) IAA and gibberellin
(2) Auxin and cytokinin
(3) Auxin and abscisic acid
(4) Glbberellin & abscisic acid
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPhytochrome is a
(1) flavoprotein
(2) glycoprotein
(3) lipoprotein
(4) chromoprotein
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe Avena curvature is used for bioassay of
(1) GA3
(2) IAA
(3) Ethylene
(4) ABA
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAuxin can be bioassayed by
1. Avena coleoptile curvature
2. hydroponics
3. potometer
4. lettuce hypocotyl elongation
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhat causes a green plant exposed to the light on only one side, to bend toward the
source of light as it grows?
1. Green plants need light to perform photosynthesis
2. Green plants seek light because they are phototropic
3. Light stimulates plant cells on the lighted side to grow faster
4. Auxin accumulates on the shaded side, stimulating greater cell elongation there
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology