166879
Which one of the following pairs, is not correctly matched?
1 Abscisic acid - Stomatal closure
2 Gibberellic acid - Leaf fall
3 Cytokinin - Cell division
4 IAA - Cell wall elongation
Explanation:
B Correct functions of the questions option is as follows. (a) Abscisic acid $\rightarrow$ Stomatal closure (b) Gibberellic acid $\rightarrow$ Plant growth (c) Cytokinin $\rightarrow$ Cell division (d) IAA $\rightarrow$ Cell wall elongation Hence, it is clear from above explanation that option (b) is not correctly matched.
[Rajasthan PMT-2010]
Plant growth and development
166887
What 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 seek light because they are phototropic
2 Light stimulates plant cells on the lighted side to grow faster
3 Auxin accumulates on the shaded side, stimulating greater cell elongation there.
4 Green plants need light to perform photosynthesis
Explanation:
C Auxin accumulates on the shaded side, stimulating greater cell elongation there. Green plants need light to perform photosynthesis. Green plant seek light because they are phototropic. One important light response in plants is phototropism, which involves growth toward or away from-a light source. Positive phototropism is growth towards a light source, negative phototropism is growth away from light. movement of Auxin
[AIPMT-2015]
Plant growth and development
166889
Through their effect on plant growth regulators, what do the temperature and light control in the plants
1 Closure of stomata
2 Fruit elongation
3 Apical dominance
4 Flowering
Explanation:
D Plants are controlled by the temperature and light falling on them for the process of flowering. Light and temperature may affect flowering in plants in various ways. - The effects of photoperiods or daily duration of light hours (and dark period) on flowering is called photoperiodism eg. In short day plant these plant flower when the days are shorter. They need less than the critical duration eg. Soyabean, tobacco etc. In long day plant, plants flower when the days are long. they require more than the critical duration. eg. Spinach, Raddish, Hibiscus. etc.
[AIPMT (Mains)-2012]
Plant growth and development
166899
The carbon ratio of lutein, abscisic acid and $\mathbf{G A}_{27}$ is
1 $6: 3: 4$
2 $5: 3: 4$
3 $8: 3: 4$
4 $4: 3: 5$
Explanation:
C The number of carbon atom in lutein $=40$ The number of carbon atom in abscisic acid $=15$ The number of carbon atom in $\mathrm{GA}_{27}=20$ The carbon ratio of lutein, Abscisic acid and $\mathrm{GA}_{27}$ is 8 3: 4
[AP EAMCET-2010]
Plant growth and development
166864
One of the commonly used plant growth hormone in tea plantations is
1 $\mathrm{ABA}$
2 Zeatin
3 IAA
4 Ethylene
Explanation:
C One of the commonly used plant growth hormone in tea plantations is IAA. IAA is a type of auxin present in the plant. Indole- 3 acetic acid is the synthetic plant hormones which is important in tea plantation.
166879
Which one of the following pairs, is not correctly matched?
1 Abscisic acid - Stomatal closure
2 Gibberellic acid - Leaf fall
3 Cytokinin - Cell division
4 IAA - Cell wall elongation
Explanation:
B Correct functions of the questions option is as follows. (a) Abscisic acid $\rightarrow$ Stomatal closure (b) Gibberellic acid $\rightarrow$ Plant growth (c) Cytokinin $\rightarrow$ Cell division (d) IAA $\rightarrow$ Cell wall elongation Hence, it is clear from above explanation that option (b) is not correctly matched.
[Rajasthan PMT-2010]
Plant growth and development
166887
What 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 seek light because they are phototropic
2 Light stimulates plant cells on the lighted side to grow faster
3 Auxin accumulates on the shaded side, stimulating greater cell elongation there.
4 Green plants need light to perform photosynthesis
Explanation:
C Auxin accumulates on the shaded side, stimulating greater cell elongation there. Green plants need light to perform photosynthesis. Green plant seek light because they are phototropic. One important light response in plants is phototropism, which involves growth toward or away from-a light source. Positive phototropism is growth towards a light source, negative phototropism is growth away from light. movement of Auxin
[AIPMT-2015]
Plant growth and development
166889
Through their effect on plant growth regulators, what do the temperature and light control in the plants
1 Closure of stomata
2 Fruit elongation
3 Apical dominance
4 Flowering
Explanation:
D Plants are controlled by the temperature and light falling on them for the process of flowering. Light and temperature may affect flowering in plants in various ways. - The effects of photoperiods or daily duration of light hours (and dark period) on flowering is called photoperiodism eg. In short day plant these plant flower when the days are shorter. They need less than the critical duration eg. Soyabean, tobacco etc. In long day plant, plants flower when the days are long. they require more than the critical duration. eg. Spinach, Raddish, Hibiscus. etc.
[AIPMT (Mains)-2012]
Plant growth and development
166899
The carbon ratio of lutein, abscisic acid and $\mathbf{G A}_{27}$ is
1 $6: 3: 4$
2 $5: 3: 4$
3 $8: 3: 4$
4 $4: 3: 5$
Explanation:
C The number of carbon atom in lutein $=40$ The number of carbon atom in abscisic acid $=15$ The number of carbon atom in $\mathrm{GA}_{27}=20$ The carbon ratio of lutein, Abscisic acid and $\mathrm{GA}_{27}$ is 8 3: 4
[AP EAMCET-2010]
Plant growth and development
166864
One of the commonly used plant growth hormone in tea plantations is
1 $\mathrm{ABA}$
2 Zeatin
3 IAA
4 Ethylene
Explanation:
C One of the commonly used plant growth hormone in tea plantations is IAA. IAA is a type of auxin present in the plant. Indole- 3 acetic acid is the synthetic plant hormones which is important in tea plantation.
166879
Which one of the following pairs, is not correctly matched?
1 Abscisic acid - Stomatal closure
2 Gibberellic acid - Leaf fall
3 Cytokinin - Cell division
4 IAA - Cell wall elongation
Explanation:
B Correct functions of the questions option is as follows. (a) Abscisic acid $\rightarrow$ Stomatal closure (b) Gibberellic acid $\rightarrow$ Plant growth (c) Cytokinin $\rightarrow$ Cell division (d) IAA $\rightarrow$ Cell wall elongation Hence, it is clear from above explanation that option (b) is not correctly matched.
[Rajasthan PMT-2010]
Plant growth and development
166887
What 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 seek light because they are phototropic
2 Light stimulates plant cells on the lighted side to grow faster
3 Auxin accumulates on the shaded side, stimulating greater cell elongation there.
4 Green plants need light to perform photosynthesis
Explanation:
C Auxin accumulates on the shaded side, stimulating greater cell elongation there. Green plants need light to perform photosynthesis. Green plant seek light because they are phototropic. One important light response in plants is phototropism, which involves growth toward or away from-a light source. Positive phototropism is growth towards a light source, negative phototropism is growth away from light. movement of Auxin
[AIPMT-2015]
Plant growth and development
166889
Through their effect on plant growth regulators, what do the temperature and light control in the plants
1 Closure of stomata
2 Fruit elongation
3 Apical dominance
4 Flowering
Explanation:
D Plants are controlled by the temperature and light falling on them for the process of flowering. Light and temperature may affect flowering in plants in various ways. - The effects of photoperiods or daily duration of light hours (and dark period) on flowering is called photoperiodism eg. In short day plant these plant flower when the days are shorter. They need less than the critical duration eg. Soyabean, tobacco etc. In long day plant, plants flower when the days are long. they require more than the critical duration. eg. Spinach, Raddish, Hibiscus. etc.
[AIPMT (Mains)-2012]
Plant growth and development
166899
The carbon ratio of lutein, abscisic acid and $\mathbf{G A}_{27}$ is
1 $6: 3: 4$
2 $5: 3: 4$
3 $8: 3: 4$
4 $4: 3: 5$
Explanation:
C The number of carbon atom in lutein $=40$ The number of carbon atom in abscisic acid $=15$ The number of carbon atom in $\mathrm{GA}_{27}=20$ The carbon ratio of lutein, Abscisic acid and $\mathrm{GA}_{27}$ is 8 3: 4
[AP EAMCET-2010]
Plant growth and development
166864
One of the commonly used plant growth hormone in tea plantations is
1 $\mathrm{ABA}$
2 Zeatin
3 IAA
4 Ethylene
Explanation:
C One of the commonly used plant growth hormone in tea plantations is IAA. IAA is a type of auxin present in the plant. Indole- 3 acetic acid is the synthetic plant hormones which is important in tea plantation.
166879
Which one of the following pairs, is not correctly matched?
1 Abscisic acid - Stomatal closure
2 Gibberellic acid - Leaf fall
3 Cytokinin - Cell division
4 IAA - Cell wall elongation
Explanation:
B Correct functions of the questions option is as follows. (a) Abscisic acid $\rightarrow$ Stomatal closure (b) Gibberellic acid $\rightarrow$ Plant growth (c) Cytokinin $\rightarrow$ Cell division (d) IAA $\rightarrow$ Cell wall elongation Hence, it is clear from above explanation that option (b) is not correctly matched.
[Rajasthan PMT-2010]
Plant growth and development
166887
What 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 seek light because they are phototropic
2 Light stimulates plant cells on the lighted side to grow faster
3 Auxin accumulates on the shaded side, stimulating greater cell elongation there.
4 Green plants need light to perform photosynthesis
Explanation:
C Auxin accumulates on the shaded side, stimulating greater cell elongation there. Green plants need light to perform photosynthesis. Green plant seek light because they are phototropic. One important light response in plants is phototropism, which involves growth toward or away from-a light source. Positive phototropism is growth towards a light source, negative phototropism is growth away from light. movement of Auxin
[AIPMT-2015]
Plant growth and development
166889
Through their effect on plant growth regulators, what do the temperature and light control in the plants
1 Closure of stomata
2 Fruit elongation
3 Apical dominance
4 Flowering
Explanation:
D Plants are controlled by the temperature and light falling on them for the process of flowering. Light and temperature may affect flowering in plants in various ways. - The effects of photoperiods or daily duration of light hours (and dark period) on flowering is called photoperiodism eg. In short day plant these plant flower when the days are shorter. They need less than the critical duration eg. Soyabean, tobacco etc. In long day plant, plants flower when the days are long. they require more than the critical duration. eg. Spinach, Raddish, Hibiscus. etc.
[AIPMT (Mains)-2012]
Plant growth and development
166899
The carbon ratio of lutein, abscisic acid and $\mathbf{G A}_{27}$ is
1 $6: 3: 4$
2 $5: 3: 4$
3 $8: 3: 4$
4 $4: 3: 5$
Explanation:
C The number of carbon atom in lutein $=40$ The number of carbon atom in abscisic acid $=15$ The number of carbon atom in $\mathrm{GA}_{27}=20$ The carbon ratio of lutein, Abscisic acid and $\mathrm{GA}_{27}$ is 8 3: 4
[AP EAMCET-2010]
Plant growth and development
166864
One of the commonly used plant growth hormone in tea plantations is
1 $\mathrm{ABA}$
2 Zeatin
3 IAA
4 Ethylene
Explanation:
C One of the commonly used plant growth hormone in tea plantations is IAA. IAA is a type of auxin present in the plant. Indole- 3 acetic acid is the synthetic plant hormones which is important in tea plantation.
166879
Which one of the following pairs, is not correctly matched?
1 Abscisic acid - Stomatal closure
2 Gibberellic acid - Leaf fall
3 Cytokinin - Cell division
4 IAA - Cell wall elongation
Explanation:
B Correct functions of the questions option is as follows. (a) Abscisic acid $\rightarrow$ Stomatal closure (b) Gibberellic acid $\rightarrow$ Plant growth (c) Cytokinin $\rightarrow$ Cell division (d) IAA $\rightarrow$ Cell wall elongation Hence, it is clear from above explanation that option (b) is not correctly matched.
[Rajasthan PMT-2010]
Plant growth and development
166887
What 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 seek light because they are phototropic
2 Light stimulates plant cells on the lighted side to grow faster
3 Auxin accumulates on the shaded side, stimulating greater cell elongation there.
4 Green plants need light to perform photosynthesis
Explanation:
C Auxin accumulates on the shaded side, stimulating greater cell elongation there. Green plants need light to perform photosynthesis. Green plant seek light because they are phototropic. One important light response in plants is phototropism, which involves growth toward or away from-a light source. Positive phototropism is growth towards a light source, negative phototropism is growth away from light. movement of Auxin
[AIPMT-2015]
Plant growth and development
166889
Through their effect on plant growth regulators, what do the temperature and light control in the plants
1 Closure of stomata
2 Fruit elongation
3 Apical dominance
4 Flowering
Explanation:
D Plants are controlled by the temperature and light falling on them for the process of flowering. Light and temperature may affect flowering in plants in various ways. - The effects of photoperiods or daily duration of light hours (and dark period) on flowering is called photoperiodism eg. In short day plant these plant flower when the days are shorter. They need less than the critical duration eg. Soyabean, tobacco etc. In long day plant, plants flower when the days are long. they require more than the critical duration. eg. Spinach, Raddish, Hibiscus. etc.
[AIPMT (Mains)-2012]
Plant growth and development
166899
The carbon ratio of lutein, abscisic acid and $\mathbf{G A}_{27}$ is
1 $6: 3: 4$
2 $5: 3: 4$
3 $8: 3: 4$
4 $4: 3: 5$
Explanation:
C The number of carbon atom in lutein $=40$ The number of carbon atom in abscisic acid $=15$ The number of carbon atom in $\mathrm{GA}_{27}=20$ The carbon ratio of lutein, Abscisic acid and $\mathrm{GA}_{27}$ is 8 3: 4
[AP EAMCET-2010]
Plant growth and development
166864
One of the commonly used plant growth hormone in tea plantations is
1 $\mathrm{ABA}$
2 Zeatin
3 IAA
4 Ethylene
Explanation:
C One of the commonly used plant growth hormone in tea plantations is IAA. IAA is a type of auxin present in the plant. Indole- 3 acetic acid is the synthetic plant hormones which is important in tea plantation.
