166814
Which one increases in the absence of light?
1 Uptake of minerals
2 Uptake of water
3 Elongation of internodes
4 Ascent of sap
Explanation:
C In general intense light retards growth in plants. High light intensities induce dwarfening of the plant. In the absence of light stem becomes excessive long due to 'etiolation'. This causes cells of internodes to get enlarged.
[AIPMT-1989]
Plant growth and development
166791
Humus is essential for plant growth because
1 it is rich in nutrients and increases the water holding capacity of soil
2 it increases aeration of soil
3 it increases porosity of soil
4 All of above
Explanation:
D Humus is essential for plant growth because it is rich in nutrients and increases the water holding capacity of soil, increases aeration of soil and increases porosity of soil also.
[HP CET-2011
Plant growth and development
166793
Which of the following statements is not correct?
1 Plant growth is generally determinate.
2 Plant growth is measurable.
3 Phase of cell elongation of plant cells is characterized by increased vacuolation.
4 Cells in the meristematic phase of growth exhibit abundant plasmodesmatal connections.
Explanation:
A Plant growth is indeterminate i.e. plants retain the capacity for unlimited growth throughout their life. - The growth of reproductive organs is limited which is called determinate growth.
[RE-NEET (UG)-06.06.2023 (Manipur)]
Plant growth and development
166796
Two seeds are germinated, $A$ in light and $B$ in dark. Which grows taller in initial stage?
1 $\mathrm{A}>\mathrm{B}$
2 $\mathrm{B}>\mathrm{A}$
3 $\mathrm{A}=\mathrm{B}$
4 No growth in either case
Explanation:
A When two seeds germinated in different situation, A in light and B in dark then, it is clear that A grows taller in initial stage, because of the auxin is more active in light. Auxin is a plant hormone which induce cell division, elongation and differentiation, apical dominance, root and stem tropism and in embryonic development.
[CG PMT-2011]
Plant growth and development
166797
$\quad$ Excess amount of $\mathrm{CO}_{2}$
1 retards growth
2 accelerates growth
3 affects growth shortly
4 does not effect growth
Explanation:
A Excess amount of $\mathrm{CO}_{2}$ retards growth. The concentration of $\mathrm{CO}_{2}$ in the atmosphere today hovers around 410 parts per million. Maximum $\mathrm{CO}_{2}$ level cause plants to thickness their leaves that could worsen climate change effects. Due to excess of $\mathrm{CO}_{2}$ trees that grow quickly die younger.
166814
Which one increases in the absence of light?
1 Uptake of minerals
2 Uptake of water
3 Elongation of internodes
4 Ascent of sap
Explanation:
C In general intense light retards growth in plants. High light intensities induce dwarfening of the plant. In the absence of light stem becomes excessive long due to 'etiolation'. This causes cells of internodes to get enlarged.
[AIPMT-1989]
Plant growth and development
166791
Humus is essential for plant growth because
1 it is rich in nutrients and increases the water holding capacity of soil
2 it increases aeration of soil
3 it increases porosity of soil
4 All of above
Explanation:
D Humus is essential for plant growth because it is rich in nutrients and increases the water holding capacity of soil, increases aeration of soil and increases porosity of soil also.
[HP CET-2011
Plant growth and development
166793
Which of the following statements is not correct?
1 Plant growth is generally determinate.
2 Plant growth is measurable.
3 Phase of cell elongation of plant cells is characterized by increased vacuolation.
4 Cells in the meristematic phase of growth exhibit abundant plasmodesmatal connections.
Explanation:
A Plant growth is indeterminate i.e. plants retain the capacity for unlimited growth throughout their life. - The growth of reproductive organs is limited which is called determinate growth.
[RE-NEET (UG)-06.06.2023 (Manipur)]
Plant growth and development
166796
Two seeds are germinated, $A$ in light and $B$ in dark. Which grows taller in initial stage?
1 $\mathrm{A}>\mathrm{B}$
2 $\mathrm{B}>\mathrm{A}$
3 $\mathrm{A}=\mathrm{B}$
4 No growth in either case
Explanation:
A When two seeds germinated in different situation, A in light and B in dark then, it is clear that A grows taller in initial stage, because of the auxin is more active in light. Auxin is a plant hormone which induce cell division, elongation and differentiation, apical dominance, root and stem tropism and in embryonic development.
[CG PMT-2011]
Plant growth and development
166797
$\quad$ Excess amount of $\mathrm{CO}_{2}$
1 retards growth
2 accelerates growth
3 affects growth shortly
4 does not effect growth
Explanation:
A Excess amount of $\mathrm{CO}_{2}$ retards growth. The concentration of $\mathrm{CO}_{2}$ in the atmosphere today hovers around 410 parts per million. Maximum $\mathrm{CO}_{2}$ level cause plants to thickness their leaves that could worsen climate change effects. Due to excess of $\mathrm{CO}_{2}$ trees that grow quickly die younger.
166814
Which one increases in the absence of light?
1 Uptake of minerals
2 Uptake of water
3 Elongation of internodes
4 Ascent of sap
Explanation:
C In general intense light retards growth in plants. High light intensities induce dwarfening of the plant. In the absence of light stem becomes excessive long due to 'etiolation'. This causes cells of internodes to get enlarged.
[AIPMT-1989]
Plant growth and development
166791
Humus is essential for plant growth because
1 it is rich in nutrients and increases the water holding capacity of soil
2 it increases aeration of soil
3 it increases porosity of soil
4 All of above
Explanation:
D Humus is essential for plant growth because it is rich in nutrients and increases the water holding capacity of soil, increases aeration of soil and increases porosity of soil also.
[HP CET-2011
Plant growth and development
166793
Which of the following statements is not correct?
1 Plant growth is generally determinate.
2 Plant growth is measurable.
3 Phase of cell elongation of plant cells is characterized by increased vacuolation.
4 Cells in the meristematic phase of growth exhibit abundant plasmodesmatal connections.
Explanation:
A Plant growth is indeterminate i.e. plants retain the capacity for unlimited growth throughout their life. - The growth of reproductive organs is limited which is called determinate growth.
[RE-NEET (UG)-06.06.2023 (Manipur)]
Plant growth and development
166796
Two seeds are germinated, $A$ in light and $B$ in dark. Which grows taller in initial stage?
1 $\mathrm{A}>\mathrm{B}$
2 $\mathrm{B}>\mathrm{A}$
3 $\mathrm{A}=\mathrm{B}$
4 No growth in either case
Explanation:
A When two seeds germinated in different situation, A in light and B in dark then, it is clear that A grows taller in initial stage, because of the auxin is more active in light. Auxin is a plant hormone which induce cell division, elongation and differentiation, apical dominance, root and stem tropism and in embryonic development.
[CG PMT-2011]
Plant growth and development
166797
$\quad$ Excess amount of $\mathrm{CO}_{2}$
1 retards growth
2 accelerates growth
3 affects growth shortly
4 does not effect growth
Explanation:
A Excess amount of $\mathrm{CO}_{2}$ retards growth. The concentration of $\mathrm{CO}_{2}$ in the atmosphere today hovers around 410 parts per million. Maximum $\mathrm{CO}_{2}$ level cause plants to thickness their leaves that could worsen climate change effects. Due to excess of $\mathrm{CO}_{2}$ trees that grow quickly die younger.
166814
Which one increases in the absence of light?
1 Uptake of minerals
2 Uptake of water
3 Elongation of internodes
4 Ascent of sap
Explanation:
C In general intense light retards growth in plants. High light intensities induce dwarfening of the plant. In the absence of light stem becomes excessive long due to 'etiolation'. This causes cells of internodes to get enlarged.
[AIPMT-1989]
Plant growth and development
166791
Humus is essential for plant growth because
1 it is rich in nutrients and increases the water holding capacity of soil
2 it increases aeration of soil
3 it increases porosity of soil
4 All of above
Explanation:
D Humus is essential for plant growth because it is rich in nutrients and increases the water holding capacity of soil, increases aeration of soil and increases porosity of soil also.
[HP CET-2011
Plant growth and development
166793
Which of the following statements is not correct?
1 Plant growth is generally determinate.
2 Plant growth is measurable.
3 Phase of cell elongation of plant cells is characterized by increased vacuolation.
4 Cells in the meristematic phase of growth exhibit abundant plasmodesmatal connections.
Explanation:
A Plant growth is indeterminate i.e. plants retain the capacity for unlimited growth throughout their life. - The growth of reproductive organs is limited which is called determinate growth.
[RE-NEET (UG)-06.06.2023 (Manipur)]
Plant growth and development
166796
Two seeds are germinated, $A$ in light and $B$ in dark. Which grows taller in initial stage?
1 $\mathrm{A}>\mathrm{B}$
2 $\mathrm{B}>\mathrm{A}$
3 $\mathrm{A}=\mathrm{B}$
4 No growth in either case
Explanation:
A When two seeds germinated in different situation, A in light and B in dark then, it is clear that A grows taller in initial stage, because of the auxin is more active in light. Auxin is a plant hormone which induce cell division, elongation and differentiation, apical dominance, root and stem tropism and in embryonic development.
[CG PMT-2011]
Plant growth and development
166797
$\quad$ Excess amount of $\mathrm{CO}_{2}$
1 retards growth
2 accelerates growth
3 affects growth shortly
4 does not effect growth
Explanation:
A Excess amount of $\mathrm{CO}_{2}$ retards growth. The concentration of $\mathrm{CO}_{2}$ in the atmosphere today hovers around 410 parts per million. Maximum $\mathrm{CO}_{2}$ level cause plants to thickness their leaves that could worsen climate change effects. Due to excess of $\mathrm{CO}_{2}$ trees that grow quickly die younger.
166814
Which one increases in the absence of light?
1 Uptake of minerals
2 Uptake of water
3 Elongation of internodes
4 Ascent of sap
Explanation:
C In general intense light retards growth in plants. High light intensities induce dwarfening of the plant. In the absence of light stem becomes excessive long due to 'etiolation'. This causes cells of internodes to get enlarged.
[AIPMT-1989]
Plant growth and development
166791
Humus is essential for plant growth because
1 it is rich in nutrients and increases the water holding capacity of soil
2 it increases aeration of soil
3 it increases porosity of soil
4 All of above
Explanation:
D Humus is essential for plant growth because it is rich in nutrients and increases the water holding capacity of soil, increases aeration of soil and increases porosity of soil also.
[HP CET-2011
Plant growth and development
166793
Which of the following statements is not correct?
1 Plant growth is generally determinate.
2 Plant growth is measurable.
3 Phase of cell elongation of plant cells is characterized by increased vacuolation.
4 Cells in the meristematic phase of growth exhibit abundant plasmodesmatal connections.
Explanation:
A Plant growth is indeterminate i.e. plants retain the capacity for unlimited growth throughout their life. - The growth of reproductive organs is limited which is called determinate growth.
[RE-NEET (UG)-06.06.2023 (Manipur)]
Plant growth and development
166796
Two seeds are germinated, $A$ in light and $B$ in dark. Which grows taller in initial stage?
1 $\mathrm{A}>\mathrm{B}$
2 $\mathrm{B}>\mathrm{A}$
3 $\mathrm{A}=\mathrm{B}$
4 No growth in either case
Explanation:
A When two seeds germinated in different situation, A in light and B in dark then, it is clear that A grows taller in initial stage, because of the auxin is more active in light. Auxin is a plant hormone which induce cell division, elongation and differentiation, apical dominance, root and stem tropism and in embryonic development.
[CG PMT-2011]
Plant growth and development
166797
$\quad$ Excess amount of $\mathrm{CO}_{2}$
1 retards growth
2 accelerates growth
3 affects growth shortly
4 does not effect growth
Explanation:
A Excess amount of $\mathrm{CO}_{2}$ retards growth. The concentration of $\mathrm{CO}_{2}$ in the atmosphere today hovers around 410 parts per million. Maximum $\mathrm{CO}_{2}$ level cause plants to thickness their leaves that could worsen climate change effects. Due to excess of $\mathrm{CO}_{2}$ trees that grow quickly die younger.
