337835
All are extrinsic factors for growth and development except
1 Temperature
2 Light
3 1 and 2
4 PGR
Explanation:
Extrinsic factors for plant growth are light, temperature, water, oxygen and nutrition etc.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337836
All are types of roles played by PGR like
1 Individualistic or synergistic
2 Complimentary or antagonistic
3 1 and 2
4 None of these
Explanation:
We may summarise that for any and every phase of growth, differentiation and development of plants, one or the other PGR has some role to play. Such roles could be complimentary or antagonistic. These could be individualistic or synergistic.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337837
Statement A : ABA is used to initiate flowering and for synchronising fruit-set in pineapples. Statement B : Ethylene promotes male flowers in cucumbers thereby increasing chance of correct pollination.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Ethylene is used to initiate flowering and for synchronising fruit-set in pineapples. Ethylene promotes female flowers in cucumbers thereby increasing the yield.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337838
One hormone hastens maturity period in juvenile confiers, a second hormone controls xylem differentiation, while the third increases the tolerance of plants to various stresses. They are respectively.
1 Auxin, Gibberellins, Cytokinin
2 Auxin, Gibberellins, ABA
3 Gibberellin, Auxin, Cytokinin
4 Gibberellin, Auxin, ABA
Explanation:
Spraying juvenile conifers with gibberellins hastens the maturity period, thus leads to early seed production. Auxin controls xylem differentiation. Abscisic acid (ABA) increase the tolerance of plants to various kinds of stresses therefore, also known as stress hormone.
337835
All are extrinsic factors for growth and development except
1 Temperature
2 Light
3 1 and 2
4 PGR
Explanation:
Extrinsic factors for plant growth are light, temperature, water, oxygen and nutrition etc.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337836
All are types of roles played by PGR like
1 Individualistic or synergistic
2 Complimentary or antagonistic
3 1 and 2
4 None of these
Explanation:
We may summarise that for any and every phase of growth, differentiation and development of plants, one or the other PGR has some role to play. Such roles could be complimentary or antagonistic. These could be individualistic or synergistic.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337837
Statement A : ABA is used to initiate flowering and for synchronising fruit-set in pineapples. Statement B : Ethylene promotes male flowers in cucumbers thereby increasing chance of correct pollination.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Ethylene is used to initiate flowering and for synchronising fruit-set in pineapples. Ethylene promotes female flowers in cucumbers thereby increasing the yield.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337838
One hormone hastens maturity period in juvenile confiers, a second hormone controls xylem differentiation, while the third increases the tolerance of plants to various stresses. They are respectively.
1 Auxin, Gibberellins, Cytokinin
2 Auxin, Gibberellins, ABA
3 Gibberellin, Auxin, Cytokinin
4 Gibberellin, Auxin, ABA
Explanation:
Spraying juvenile conifers with gibberellins hastens the maturity period, thus leads to early seed production. Auxin controls xylem differentiation. Abscisic acid (ABA) increase the tolerance of plants to various kinds of stresses therefore, also known as stress hormone.
337835
All are extrinsic factors for growth and development except
1 Temperature
2 Light
3 1 and 2
4 PGR
Explanation:
Extrinsic factors for plant growth are light, temperature, water, oxygen and nutrition etc.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337836
All are types of roles played by PGR like
1 Individualistic or synergistic
2 Complimentary or antagonistic
3 1 and 2
4 None of these
Explanation:
We may summarise that for any and every phase of growth, differentiation and development of plants, one or the other PGR has some role to play. Such roles could be complimentary or antagonistic. These could be individualistic or synergistic.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337837
Statement A : ABA is used to initiate flowering and for synchronising fruit-set in pineapples. Statement B : Ethylene promotes male flowers in cucumbers thereby increasing chance of correct pollination.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Ethylene is used to initiate flowering and for synchronising fruit-set in pineapples. Ethylene promotes female flowers in cucumbers thereby increasing the yield.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337838
One hormone hastens maturity period in juvenile confiers, a second hormone controls xylem differentiation, while the third increases the tolerance of plants to various stresses. They are respectively.
1 Auxin, Gibberellins, Cytokinin
2 Auxin, Gibberellins, ABA
3 Gibberellin, Auxin, Cytokinin
4 Gibberellin, Auxin, ABA
Explanation:
Spraying juvenile conifers with gibberellins hastens the maturity period, thus leads to early seed production. Auxin controls xylem differentiation. Abscisic acid (ABA) increase the tolerance of plants to various kinds of stresses therefore, also known as stress hormone.
337835
All are extrinsic factors for growth and development except
1 Temperature
2 Light
3 1 and 2
4 PGR
Explanation:
Extrinsic factors for plant growth are light, temperature, water, oxygen and nutrition etc.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337836
All are types of roles played by PGR like
1 Individualistic or synergistic
2 Complimentary or antagonistic
3 1 and 2
4 None of these
Explanation:
We may summarise that for any and every phase of growth, differentiation and development of plants, one or the other PGR has some role to play. Such roles could be complimentary or antagonistic. These could be individualistic or synergistic.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337837
Statement A : ABA is used to initiate flowering and for synchronising fruit-set in pineapples. Statement B : Ethylene promotes male flowers in cucumbers thereby increasing chance of correct pollination.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Ethylene is used to initiate flowering and for synchronising fruit-set in pineapples. Ethylene promotes female flowers in cucumbers thereby increasing the yield.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337838
One hormone hastens maturity period in juvenile confiers, a second hormone controls xylem differentiation, while the third increases the tolerance of plants to various stresses. They are respectively.
1 Auxin, Gibberellins, Cytokinin
2 Auxin, Gibberellins, ABA
3 Gibberellin, Auxin, Cytokinin
4 Gibberellin, Auxin, ABA
Explanation:
Spraying juvenile conifers with gibberellins hastens the maturity period, thus leads to early seed production. Auxin controls xylem differentiation. Abscisic acid (ABA) increase the tolerance of plants to various kinds of stresses therefore, also known as stress hormone.
