D The maximum growth rate occurs in exponential phase. It is characterized by rapid growth in population of tree. In microbial growth curve, lag initial phase is characterized by cellular activity but not growth. - Exponential or log phase is the time when cells are dividing by binary fission and doubling in number after each generation time. - In stationary phase, the growth curve begins to destine as the available nutrients become depleted and waste products start to accumulate. - The terminal irreversible stage of ageing is called senescence this is the last phase of life span that ultimately leads to death.
[CMC Ludhiana-2012
Plant growth and development
166795
Assertion (A) : Measurement and comparison of the total plant growth per unit time is not absolute growth rate. Reason (R) : The growth of given system per unit time as percentage of initial size is called the relative growth rate What of the following is true?
1 Both (A) and (R) are true and (R) is the correct explanation of $(\mathrm{A})$
2 Both (A) and (R) are true, but (R) is not the correct explanation of (A)
3 (A) is true, but (R) is false
4 (A) is false, but (R) is true
Explanation:
D Increase in total growth of two organs or organisms is measured and comparison of total growth per unit time is called absolute growth rate. Relative growth rate a measurement of the production of a plant defined as the increase in dry mass per unit of plant. The growth of the given system per unit time expressed on a common basis per unit initial parameter is called relative growth rate. Hence, (A) is false but (R) is true.
[TS EAMCET-02.05.2018 Shift-II]
Plant growth and development
166798
The growth in diameter of stem is due to :
1 cambium
2 xylem
3 Phloem
4 shoot apex
Explanation:
A The growth in diameter of stem is due to cambium. Growth of plants depends on two of growth namely primary growth and secondary growth. Primary growth means increase in length of stem and root and secondary growth means increase in thickness. Xylem- It acts as main water conducting tissue. It provides mineral and nutrition to plant parts. Phloem- It works as a main food conducting tissue. It also provides mineral and nutrition to plant parts. Shoot apex:- It is the apical part of the stem. 'Cambium'
[Rajasthan PMT-2000]
Plant growth and development
166821
A tree grows at the rate of $0.5 \mathrm{~m}$ per year. What will be the height of the board fixed at $1.5 \mathrm{~m}$ above the base five years ago?
1 $4.0 \mathrm{~m}$
2 $3.5 \mathrm{~m}$
3 $1.5 \mathrm{~m}$
4 $4.5 \mathrm{~m}$
Explanation:
C According to this question The rate growth of plant is $0.5 \mathrm{~m}$ per year after 5 year, the plant growth will be $0.5 \times 5=2.5+1.5 \mathrm{~m}=4 \mathrm{~m}$ After 5 years, the height of the board will be the new height of the board minus the initial height of the plant with the board that is, $2.5 \mathrm{~m}-1.5 \mathrm{~m}=1.5 \mathrm{~m}$ Therefore the board was fixed at $1.5 \mathrm{~m}$
[J and K CET-2004]
Plant growth and development
166790
The deteriorative processes in plants, that naturally terminate their functional life, are collectively called
1 wilting
2 abscission
3 plasmolysis
4 senescence
Explanation:
D The deteriorative process in plants, that naturally terminate their functional life, collectively called senescence. Senescence as an active development cellular process in the growth and functioning of a flowering plants, is indicated in leaf as abscission. Wilting- When plant-roots are unable to supply sufficient moisture to the stems and leaves, then plant wilt condition. Abscission- It is the shedding of various parts of an organism. Plasmolysis -Plasmolysis is defined as the process of contraction or shrinkage of the protoplasm of a plant cell and is caused due to the loss of water in the cell.
D The maximum growth rate occurs in exponential phase. It is characterized by rapid growth in population of tree. In microbial growth curve, lag initial phase is characterized by cellular activity but not growth. - Exponential or log phase is the time when cells are dividing by binary fission and doubling in number after each generation time. - In stationary phase, the growth curve begins to destine as the available nutrients become depleted and waste products start to accumulate. - The terminal irreversible stage of ageing is called senescence this is the last phase of life span that ultimately leads to death.
[CMC Ludhiana-2012
Plant growth and development
166795
Assertion (A) : Measurement and comparison of the total plant growth per unit time is not absolute growth rate. Reason (R) : The growth of given system per unit time as percentage of initial size is called the relative growth rate What of the following is true?
1 Both (A) and (R) are true and (R) is the correct explanation of $(\mathrm{A})$
2 Both (A) and (R) are true, but (R) is not the correct explanation of (A)
3 (A) is true, but (R) is false
4 (A) is false, but (R) is true
Explanation:
D Increase in total growth of two organs or organisms is measured and comparison of total growth per unit time is called absolute growth rate. Relative growth rate a measurement of the production of a plant defined as the increase in dry mass per unit of plant. The growth of the given system per unit time expressed on a common basis per unit initial parameter is called relative growth rate. Hence, (A) is false but (R) is true.
[TS EAMCET-02.05.2018 Shift-II]
Plant growth and development
166798
The growth in diameter of stem is due to :
1 cambium
2 xylem
3 Phloem
4 shoot apex
Explanation:
A The growth in diameter of stem is due to cambium. Growth of plants depends on two of growth namely primary growth and secondary growth. Primary growth means increase in length of stem and root and secondary growth means increase in thickness. Xylem- It acts as main water conducting tissue. It provides mineral and nutrition to plant parts. Phloem- It works as a main food conducting tissue. It also provides mineral and nutrition to plant parts. Shoot apex:- It is the apical part of the stem. 'Cambium'
[Rajasthan PMT-2000]
Plant growth and development
166821
A tree grows at the rate of $0.5 \mathrm{~m}$ per year. What will be the height of the board fixed at $1.5 \mathrm{~m}$ above the base five years ago?
1 $4.0 \mathrm{~m}$
2 $3.5 \mathrm{~m}$
3 $1.5 \mathrm{~m}$
4 $4.5 \mathrm{~m}$
Explanation:
C According to this question The rate growth of plant is $0.5 \mathrm{~m}$ per year after 5 year, the plant growth will be $0.5 \times 5=2.5+1.5 \mathrm{~m}=4 \mathrm{~m}$ After 5 years, the height of the board will be the new height of the board minus the initial height of the plant with the board that is, $2.5 \mathrm{~m}-1.5 \mathrm{~m}=1.5 \mathrm{~m}$ Therefore the board was fixed at $1.5 \mathrm{~m}$
[J and K CET-2004]
Plant growth and development
166790
The deteriorative processes in plants, that naturally terminate their functional life, are collectively called
1 wilting
2 abscission
3 plasmolysis
4 senescence
Explanation:
D The deteriorative process in plants, that naturally terminate their functional life, collectively called senescence. Senescence as an active development cellular process in the growth and functioning of a flowering plants, is indicated in leaf as abscission. Wilting- When plant-roots are unable to supply sufficient moisture to the stems and leaves, then plant wilt condition. Abscission- It is the shedding of various parts of an organism. Plasmolysis -Plasmolysis is defined as the process of contraction or shrinkage of the protoplasm of a plant cell and is caused due to the loss of water in the cell.
D The maximum growth rate occurs in exponential phase. It is characterized by rapid growth in population of tree. In microbial growth curve, lag initial phase is characterized by cellular activity but not growth. - Exponential or log phase is the time when cells are dividing by binary fission and doubling in number after each generation time. - In stationary phase, the growth curve begins to destine as the available nutrients become depleted and waste products start to accumulate. - The terminal irreversible stage of ageing is called senescence this is the last phase of life span that ultimately leads to death.
[CMC Ludhiana-2012
Plant growth and development
166795
Assertion (A) : Measurement and comparison of the total plant growth per unit time is not absolute growth rate. Reason (R) : The growth of given system per unit time as percentage of initial size is called the relative growth rate What of the following is true?
1 Both (A) and (R) are true and (R) is the correct explanation of $(\mathrm{A})$
2 Both (A) and (R) are true, but (R) is not the correct explanation of (A)
3 (A) is true, but (R) is false
4 (A) is false, but (R) is true
Explanation:
D Increase in total growth of two organs or organisms is measured and comparison of total growth per unit time is called absolute growth rate. Relative growth rate a measurement of the production of a plant defined as the increase in dry mass per unit of plant. The growth of the given system per unit time expressed on a common basis per unit initial parameter is called relative growth rate. Hence, (A) is false but (R) is true.
[TS EAMCET-02.05.2018 Shift-II]
Plant growth and development
166798
The growth in diameter of stem is due to :
1 cambium
2 xylem
3 Phloem
4 shoot apex
Explanation:
A The growth in diameter of stem is due to cambium. Growth of plants depends on two of growth namely primary growth and secondary growth. Primary growth means increase in length of stem and root and secondary growth means increase in thickness. Xylem- It acts as main water conducting tissue. It provides mineral and nutrition to plant parts. Phloem- It works as a main food conducting tissue. It also provides mineral and nutrition to plant parts. Shoot apex:- It is the apical part of the stem. 'Cambium'
[Rajasthan PMT-2000]
Plant growth and development
166821
A tree grows at the rate of $0.5 \mathrm{~m}$ per year. What will be the height of the board fixed at $1.5 \mathrm{~m}$ above the base five years ago?
1 $4.0 \mathrm{~m}$
2 $3.5 \mathrm{~m}$
3 $1.5 \mathrm{~m}$
4 $4.5 \mathrm{~m}$
Explanation:
C According to this question The rate growth of plant is $0.5 \mathrm{~m}$ per year after 5 year, the plant growth will be $0.5 \times 5=2.5+1.5 \mathrm{~m}=4 \mathrm{~m}$ After 5 years, the height of the board will be the new height of the board minus the initial height of the plant with the board that is, $2.5 \mathrm{~m}-1.5 \mathrm{~m}=1.5 \mathrm{~m}$ Therefore the board was fixed at $1.5 \mathrm{~m}$
[J and K CET-2004]
Plant growth and development
166790
The deteriorative processes in plants, that naturally terminate their functional life, are collectively called
1 wilting
2 abscission
3 plasmolysis
4 senescence
Explanation:
D The deteriorative process in plants, that naturally terminate their functional life, collectively called senescence. Senescence as an active development cellular process in the growth and functioning of a flowering plants, is indicated in leaf as abscission. Wilting- When plant-roots are unable to supply sufficient moisture to the stems and leaves, then plant wilt condition. Abscission- It is the shedding of various parts of an organism. Plasmolysis -Plasmolysis is defined as the process of contraction or shrinkage of the protoplasm of a plant cell and is caused due to the loss of water in the cell.
D The maximum growth rate occurs in exponential phase. It is characterized by rapid growth in population of tree. In microbial growth curve, lag initial phase is characterized by cellular activity but not growth. - Exponential or log phase is the time when cells are dividing by binary fission and doubling in number after each generation time. - In stationary phase, the growth curve begins to destine as the available nutrients become depleted and waste products start to accumulate. - The terminal irreversible stage of ageing is called senescence this is the last phase of life span that ultimately leads to death.
[CMC Ludhiana-2012
Plant growth and development
166795
Assertion (A) : Measurement and comparison of the total plant growth per unit time is not absolute growth rate. Reason (R) : The growth of given system per unit time as percentage of initial size is called the relative growth rate What of the following is true?
1 Both (A) and (R) are true and (R) is the correct explanation of $(\mathrm{A})$
2 Both (A) and (R) are true, but (R) is not the correct explanation of (A)
3 (A) is true, but (R) is false
4 (A) is false, but (R) is true
Explanation:
D Increase in total growth of two organs or organisms is measured and comparison of total growth per unit time is called absolute growth rate. Relative growth rate a measurement of the production of a plant defined as the increase in dry mass per unit of plant. The growth of the given system per unit time expressed on a common basis per unit initial parameter is called relative growth rate. Hence, (A) is false but (R) is true.
[TS EAMCET-02.05.2018 Shift-II]
Plant growth and development
166798
The growth in diameter of stem is due to :
1 cambium
2 xylem
3 Phloem
4 shoot apex
Explanation:
A The growth in diameter of stem is due to cambium. Growth of plants depends on two of growth namely primary growth and secondary growth. Primary growth means increase in length of stem and root and secondary growth means increase in thickness. Xylem- It acts as main water conducting tissue. It provides mineral and nutrition to plant parts. Phloem- It works as a main food conducting tissue. It also provides mineral and nutrition to plant parts. Shoot apex:- It is the apical part of the stem. 'Cambium'
[Rajasthan PMT-2000]
Plant growth and development
166821
A tree grows at the rate of $0.5 \mathrm{~m}$ per year. What will be the height of the board fixed at $1.5 \mathrm{~m}$ above the base five years ago?
1 $4.0 \mathrm{~m}$
2 $3.5 \mathrm{~m}$
3 $1.5 \mathrm{~m}$
4 $4.5 \mathrm{~m}$
Explanation:
C According to this question The rate growth of plant is $0.5 \mathrm{~m}$ per year after 5 year, the plant growth will be $0.5 \times 5=2.5+1.5 \mathrm{~m}=4 \mathrm{~m}$ After 5 years, the height of the board will be the new height of the board minus the initial height of the plant with the board that is, $2.5 \mathrm{~m}-1.5 \mathrm{~m}=1.5 \mathrm{~m}$ Therefore the board was fixed at $1.5 \mathrm{~m}$
[J and K CET-2004]
Plant growth and development
166790
The deteriorative processes in plants, that naturally terminate their functional life, are collectively called
1 wilting
2 abscission
3 plasmolysis
4 senescence
Explanation:
D The deteriorative process in plants, that naturally terminate their functional life, collectively called senescence. Senescence as an active development cellular process in the growth and functioning of a flowering plants, is indicated in leaf as abscission. Wilting- When plant-roots are unable to supply sufficient moisture to the stems and leaves, then plant wilt condition. Abscission- It is the shedding of various parts of an organism. Plasmolysis -Plasmolysis is defined as the process of contraction or shrinkage of the protoplasm of a plant cell and is caused due to the loss of water in the cell.
D The maximum growth rate occurs in exponential phase. It is characterized by rapid growth in population of tree. In microbial growth curve, lag initial phase is characterized by cellular activity but not growth. - Exponential or log phase is the time when cells are dividing by binary fission and doubling in number after each generation time. - In stationary phase, the growth curve begins to destine as the available nutrients become depleted and waste products start to accumulate. - The terminal irreversible stage of ageing is called senescence this is the last phase of life span that ultimately leads to death.
[CMC Ludhiana-2012
Plant growth and development
166795
Assertion (A) : Measurement and comparison of the total plant growth per unit time is not absolute growth rate. Reason (R) : The growth of given system per unit time as percentage of initial size is called the relative growth rate What of the following is true?
1 Both (A) and (R) are true and (R) is the correct explanation of $(\mathrm{A})$
2 Both (A) and (R) are true, but (R) is not the correct explanation of (A)
3 (A) is true, but (R) is false
4 (A) is false, but (R) is true
Explanation:
D Increase in total growth of two organs or organisms is measured and comparison of total growth per unit time is called absolute growth rate. Relative growth rate a measurement of the production of a plant defined as the increase in dry mass per unit of plant. The growth of the given system per unit time expressed on a common basis per unit initial parameter is called relative growth rate. Hence, (A) is false but (R) is true.
[TS EAMCET-02.05.2018 Shift-II]
Plant growth and development
166798
The growth in diameter of stem is due to :
1 cambium
2 xylem
3 Phloem
4 shoot apex
Explanation:
A The growth in diameter of stem is due to cambium. Growth of plants depends on two of growth namely primary growth and secondary growth. Primary growth means increase in length of stem and root and secondary growth means increase in thickness. Xylem- It acts as main water conducting tissue. It provides mineral and nutrition to plant parts. Phloem- It works as a main food conducting tissue. It also provides mineral and nutrition to plant parts. Shoot apex:- It is the apical part of the stem. 'Cambium'
[Rajasthan PMT-2000]
Plant growth and development
166821
A tree grows at the rate of $0.5 \mathrm{~m}$ per year. What will be the height of the board fixed at $1.5 \mathrm{~m}$ above the base five years ago?
1 $4.0 \mathrm{~m}$
2 $3.5 \mathrm{~m}$
3 $1.5 \mathrm{~m}$
4 $4.5 \mathrm{~m}$
Explanation:
C According to this question The rate growth of plant is $0.5 \mathrm{~m}$ per year after 5 year, the plant growth will be $0.5 \times 5=2.5+1.5 \mathrm{~m}=4 \mathrm{~m}$ After 5 years, the height of the board will be the new height of the board minus the initial height of the plant with the board that is, $2.5 \mathrm{~m}-1.5 \mathrm{~m}=1.5 \mathrm{~m}$ Therefore the board was fixed at $1.5 \mathrm{~m}$
[J and K CET-2004]
Plant growth and development
166790
The deteriorative processes in plants, that naturally terminate their functional life, are collectively called
1 wilting
2 abscission
3 plasmolysis
4 senescence
Explanation:
D The deteriorative process in plants, that naturally terminate their functional life, collectively called senescence. Senescence as an active development cellular process in the growth and functioning of a flowering plants, is indicated in leaf as abscission. Wilting- When plant-roots are unable to supply sufficient moisture to the stems and leaves, then plant wilt condition. Abscission- It is the shedding of various parts of an organism. Plasmolysis -Plasmolysis is defined as the process of contraction or shrinkage of the protoplasm of a plant cell and is caused due to the loss of water in the cell.
