A The term cytokinin was coined by Letham.Cytokinins are present in all plant tissues. They are abundant in the root tip, shoot apex, and immature seeds.
[Rajasthan PMT-1996]
Plant growth and development
166870
Highest concentration of auxin is found in
1 root and shoot tips
2 leaves and fruits
3 mid stem portion
4 none of the above
Explanation:
A Highest concentration of auxin is found in root and shoot tips. Auxin was first isolated from human urine. They are generally produced by growing apices of stem and roots. Auxin also induce parthenocarpy, e.g. in tomatoes. Auxin also controles xylem differentiation and help in cell division.
[UP CPMT-2003]
Plant growth and development
166871
Compare the statement $A$ and $B$. Statement: A Ethylene is a gas which acts as growth regulator of plants. Statement: B It is the most simple plant hormone.
1 Both the statements A and B are correct and $\mathrm{B}$ is the correct explanation of $\mathrm{A}$.
2 Both the statements A and B are correct and $\mathrm{B}$ is not correct explanation of $\mathrm{A}$.
3 Statement A is correct and B is wrong
4 Statement A is wrong and B is correct
Explanation:
B Ethylene is a gaseous plant hormone that controls many activities in plants. Ethylene is a most simple plant hormone which is synthesized in the ripening fruits and tissues undergoing senescence. According to the given statements A and B both are correct but $\mathrm{B}$ is not correct explanation of $\mathrm{A}$. Hence it is clear that correct answer is option (B).
[Manipal-2011]
Plant growth and development
166873
The scientist, who performed some experiments with oat coleoptiles for the presence of a substance which could diffuse into agar blocks is
1 Ganong
2 Went
3 Boysen-Jensen
4 Fujikura
Explanation:
B The scientist who performed some experiments with oat coleoptiles for the presence of a substance (i.e. for auxin) which could diffuse into agar blocks is Went.
[J and K CET-2009]
Plant growth and development
166874
Which of the following movements in plants is related to the changes in the auxin level?
1 Movement of shoot towards the source of light
2 Nyctinasty
3 Movement of sunflower towards sun
4 All of the above
Explanation:
A The movements in plants is related to the movement of shoots towards of light due to changes in the auxin level. Sun is an important source of digit for all the organism in the world. If a plant moves in response to sunlight during daytime then, it is called heliotropism. Phototropism is the general response of a plant towards light. Nyctinasty- If a plant grows in response to darkness that phenomenon is called nyctinastic plants.
A The term cytokinin was coined by Letham.Cytokinins are present in all plant tissues. They are abundant in the root tip, shoot apex, and immature seeds.
[Rajasthan PMT-1996]
Plant growth and development
166870
Highest concentration of auxin is found in
1 root and shoot tips
2 leaves and fruits
3 mid stem portion
4 none of the above
Explanation:
A Highest concentration of auxin is found in root and shoot tips. Auxin was first isolated from human urine. They are generally produced by growing apices of stem and roots. Auxin also induce parthenocarpy, e.g. in tomatoes. Auxin also controles xylem differentiation and help in cell division.
[UP CPMT-2003]
Plant growth and development
166871
Compare the statement $A$ and $B$. Statement: A Ethylene is a gas which acts as growth regulator of plants. Statement: B It is the most simple plant hormone.
1 Both the statements A and B are correct and $\mathrm{B}$ is the correct explanation of $\mathrm{A}$.
2 Both the statements A and B are correct and $\mathrm{B}$ is not correct explanation of $\mathrm{A}$.
3 Statement A is correct and B is wrong
4 Statement A is wrong and B is correct
Explanation:
B Ethylene is a gaseous plant hormone that controls many activities in plants. Ethylene is a most simple plant hormone which is synthesized in the ripening fruits and tissues undergoing senescence. According to the given statements A and B both are correct but $\mathrm{B}$ is not correct explanation of $\mathrm{A}$. Hence it is clear that correct answer is option (B).
[Manipal-2011]
Plant growth and development
166873
The scientist, who performed some experiments with oat coleoptiles for the presence of a substance which could diffuse into agar blocks is
1 Ganong
2 Went
3 Boysen-Jensen
4 Fujikura
Explanation:
B The scientist who performed some experiments with oat coleoptiles for the presence of a substance (i.e. for auxin) which could diffuse into agar blocks is Went.
[J and K CET-2009]
Plant growth and development
166874
Which of the following movements in plants is related to the changes in the auxin level?
1 Movement of shoot towards the source of light
2 Nyctinasty
3 Movement of sunflower towards sun
4 All of the above
Explanation:
A The movements in plants is related to the movement of shoots towards of light due to changes in the auxin level. Sun is an important source of digit for all the organism in the world. If a plant moves in response to sunlight during daytime then, it is called heliotropism. Phototropism is the general response of a plant towards light. Nyctinasty- If a plant grows in response to darkness that phenomenon is called nyctinastic plants.
A The term cytokinin was coined by Letham.Cytokinins are present in all plant tissues. They are abundant in the root tip, shoot apex, and immature seeds.
[Rajasthan PMT-1996]
Plant growth and development
166870
Highest concentration of auxin is found in
1 root and shoot tips
2 leaves and fruits
3 mid stem portion
4 none of the above
Explanation:
A Highest concentration of auxin is found in root and shoot tips. Auxin was first isolated from human urine. They are generally produced by growing apices of stem and roots. Auxin also induce parthenocarpy, e.g. in tomatoes. Auxin also controles xylem differentiation and help in cell division.
[UP CPMT-2003]
Plant growth and development
166871
Compare the statement $A$ and $B$. Statement: A Ethylene is a gas which acts as growth regulator of plants. Statement: B It is the most simple plant hormone.
1 Both the statements A and B are correct and $\mathrm{B}$ is the correct explanation of $\mathrm{A}$.
2 Both the statements A and B are correct and $\mathrm{B}$ is not correct explanation of $\mathrm{A}$.
3 Statement A is correct and B is wrong
4 Statement A is wrong and B is correct
Explanation:
B Ethylene is a gaseous plant hormone that controls many activities in plants. Ethylene is a most simple plant hormone which is synthesized in the ripening fruits and tissues undergoing senescence. According to the given statements A and B both are correct but $\mathrm{B}$ is not correct explanation of $\mathrm{A}$. Hence it is clear that correct answer is option (B).
[Manipal-2011]
Plant growth and development
166873
The scientist, who performed some experiments with oat coleoptiles for the presence of a substance which could diffuse into agar blocks is
1 Ganong
2 Went
3 Boysen-Jensen
4 Fujikura
Explanation:
B The scientist who performed some experiments with oat coleoptiles for the presence of a substance (i.e. for auxin) which could diffuse into agar blocks is Went.
[J and K CET-2009]
Plant growth and development
166874
Which of the following movements in plants is related to the changes in the auxin level?
1 Movement of shoot towards the source of light
2 Nyctinasty
3 Movement of sunflower towards sun
4 All of the above
Explanation:
A The movements in plants is related to the movement of shoots towards of light due to changes in the auxin level. Sun is an important source of digit for all the organism in the world. If a plant moves in response to sunlight during daytime then, it is called heliotropism. Phototropism is the general response of a plant towards light. Nyctinasty- If a plant grows in response to darkness that phenomenon is called nyctinastic plants.
A The term cytokinin was coined by Letham.Cytokinins are present in all plant tissues. They are abundant in the root tip, shoot apex, and immature seeds.
[Rajasthan PMT-1996]
Plant growth and development
166870
Highest concentration of auxin is found in
1 root and shoot tips
2 leaves and fruits
3 mid stem portion
4 none of the above
Explanation:
A Highest concentration of auxin is found in root and shoot tips. Auxin was first isolated from human urine. They are generally produced by growing apices of stem and roots. Auxin also induce parthenocarpy, e.g. in tomatoes. Auxin also controles xylem differentiation and help in cell division.
[UP CPMT-2003]
Plant growth and development
166871
Compare the statement $A$ and $B$. Statement: A Ethylene is a gas which acts as growth regulator of plants. Statement: B It is the most simple plant hormone.
1 Both the statements A and B are correct and $\mathrm{B}$ is the correct explanation of $\mathrm{A}$.
2 Both the statements A and B are correct and $\mathrm{B}$ is not correct explanation of $\mathrm{A}$.
3 Statement A is correct and B is wrong
4 Statement A is wrong and B is correct
Explanation:
B Ethylene is a gaseous plant hormone that controls many activities in plants. Ethylene is a most simple plant hormone which is synthesized in the ripening fruits and tissues undergoing senescence. According to the given statements A and B both are correct but $\mathrm{B}$ is not correct explanation of $\mathrm{A}$. Hence it is clear that correct answer is option (B).
[Manipal-2011]
Plant growth and development
166873
The scientist, who performed some experiments with oat coleoptiles for the presence of a substance which could diffuse into agar blocks is
1 Ganong
2 Went
3 Boysen-Jensen
4 Fujikura
Explanation:
B The scientist who performed some experiments with oat coleoptiles for the presence of a substance (i.e. for auxin) which could diffuse into agar blocks is Went.
[J and K CET-2009]
Plant growth and development
166874
Which of the following movements in plants is related to the changes in the auxin level?
1 Movement of shoot towards the source of light
2 Nyctinasty
3 Movement of sunflower towards sun
4 All of the above
Explanation:
A The movements in plants is related to the movement of shoots towards of light due to changes in the auxin level. Sun is an important source of digit for all the organism in the world. If a plant moves in response to sunlight during daytime then, it is called heliotropism. Phototropism is the general response of a plant towards light. Nyctinasty- If a plant grows in response to darkness that phenomenon is called nyctinastic plants.
A The term cytokinin was coined by Letham.Cytokinins are present in all plant tissues. They are abundant in the root tip, shoot apex, and immature seeds.
[Rajasthan PMT-1996]
Plant growth and development
166870
Highest concentration of auxin is found in
1 root and shoot tips
2 leaves and fruits
3 mid stem portion
4 none of the above
Explanation:
A Highest concentration of auxin is found in root and shoot tips. Auxin was first isolated from human urine. They are generally produced by growing apices of stem and roots. Auxin also induce parthenocarpy, e.g. in tomatoes. Auxin also controles xylem differentiation and help in cell division.
[UP CPMT-2003]
Plant growth and development
166871
Compare the statement $A$ and $B$. Statement: A Ethylene is a gas which acts as growth regulator of plants. Statement: B It is the most simple plant hormone.
1 Both the statements A and B are correct and $\mathrm{B}$ is the correct explanation of $\mathrm{A}$.
2 Both the statements A and B are correct and $\mathrm{B}$ is not correct explanation of $\mathrm{A}$.
3 Statement A is correct and B is wrong
4 Statement A is wrong and B is correct
Explanation:
B Ethylene is a gaseous plant hormone that controls many activities in plants. Ethylene is a most simple plant hormone which is synthesized in the ripening fruits and tissues undergoing senescence. According to the given statements A and B both are correct but $\mathrm{B}$ is not correct explanation of $\mathrm{A}$. Hence it is clear that correct answer is option (B).
[Manipal-2011]
Plant growth and development
166873
The scientist, who performed some experiments with oat coleoptiles for the presence of a substance which could diffuse into agar blocks is
1 Ganong
2 Went
3 Boysen-Jensen
4 Fujikura
Explanation:
B The scientist who performed some experiments with oat coleoptiles for the presence of a substance (i.e. for auxin) which could diffuse into agar blocks is Went.
[J and K CET-2009]
Plant growth and development
166874
Which of the following movements in plants is related to the changes in the auxin level?
1 Movement of shoot towards the source of light
2 Nyctinasty
3 Movement of sunflower towards sun
4 All of the above
Explanation:
A The movements in plants is related to the movement of shoots towards of light due to changes in the auxin level. Sun is an important source of digit for all the organism in the world. If a plant moves in response to sunlight during daytime then, it is called heliotropism. Phototropism is the general response of a plant towards light. Nyctinasty- If a plant grows in response to darkness that phenomenon is called nyctinastic plants.
