D The root system of a plant develops from the hypocotyls of the embryo of a seed. - In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order. - Root cap $\rightarrow$ Zone of cell division $\rightarrow$ Zone of cell enlargement $\rightarrow$ Zone of cell maturation. (i) Root cap zone - The apex of each root is covered by a cushion of thin walled cells known as root cap. (ii) Region of cell division - It lies just behind the root cap it is the main growing region of the root where active cell divisions take place. (iii) Region of elongation - The region of elongation is responsible for growth in length of the root. (iv) region of maturation - Epidermal cells of this region give out small, thin, cylindrical unicellular outgrowths, known as root hairs. These are the main absorbing organs of the root.
[AIPMT-2004]
Plant growth and development
166826
Which pigment involves in photoperiodic change in plants?
1 Phytochrome
2 Cytochrome
3 Chlorophyll
4 Anthocyanin
Explanation:
A Phytochrome pigment involve in photoperiodic change in plants. It is a pigment that present in green plants and is mainly responsible for photomorphogenic changes and development. Cytochrome- It is a iron containing heamoproteins. They are electron carriers and they involved in the generation of ATP via electron transport. Anthocyanin- It is mainly in the form of red to blue flavonoid pigments that are majorly represented in plants. Chlorophyll - Chlorophyll is a pigment that gives plants their green colour, and it helps plants create their own food through photosynthesis.
[Rajasthan PMT-2009]
Plant growth and development
166829
Movement of tendrils in response to touch is known as
1 nyctinastism
2 thigmotropism
3 seismonastism
4 haptonastism
Explanation:
B Movement of tendrils in response to touch is known as thigmotropism. Thigmotropism are movement that happen due to contact with foreign body. Tendrils are a long part that grows from a climbing plant. Nyctinastism- In plant, it refers to the nastic movement of leaves or petals of higher plants in response to darkness. Seismonastism- It refers to the movement which is shown by plants on receiving stimulus. Haptonastism - Haptonasty is a type of growth independent movement observed in Mimosa. In this type of movement, the leaflets fold, and the petioles droop in response to touch.
[UP CPMT-2010]
Plant growth and development
166830
The correct sequence of cellular growth stages is
C According to the given option, the correct sequence of cellular growth stages is as follows. division $\rightarrow$ elongation $\rightarrow$ differentiation Hence, correct answer is option (c).
[MGIMS Wardha-2014]
Plant growth and development
166831
When a plant has different types of leaves, the condition is known as:
1 heterophylly
2 anisophylly
3 myremecophylly
4 none of the above
Explanation:
A When a plant has different types of leaves, the condition is known as heterophylly. Heterophylly refers to the different shapes of leaves present at different stages of life or in different environmental conditions in a single plant. Anisophylly- It means that a plant has two or more shapes and sizes leaves. Myremecophyly- When ant takes its shelter on some trees such as mango, Litchi, Jamun etc, then this condition is related to myremecophily.
D The root system of a plant develops from the hypocotyls of the embryo of a seed. - In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order. - Root cap $\rightarrow$ Zone of cell division $\rightarrow$ Zone of cell enlargement $\rightarrow$ Zone of cell maturation. (i) Root cap zone - The apex of each root is covered by a cushion of thin walled cells known as root cap. (ii) Region of cell division - It lies just behind the root cap it is the main growing region of the root where active cell divisions take place. (iii) Region of elongation - The region of elongation is responsible for growth in length of the root. (iv) region of maturation - Epidermal cells of this region give out small, thin, cylindrical unicellular outgrowths, known as root hairs. These are the main absorbing organs of the root.
[AIPMT-2004]
Plant growth and development
166826
Which pigment involves in photoperiodic change in plants?
1 Phytochrome
2 Cytochrome
3 Chlorophyll
4 Anthocyanin
Explanation:
A Phytochrome pigment involve in photoperiodic change in plants. It is a pigment that present in green plants and is mainly responsible for photomorphogenic changes and development. Cytochrome- It is a iron containing heamoproteins. They are electron carriers and they involved in the generation of ATP via electron transport. Anthocyanin- It is mainly in the form of red to blue flavonoid pigments that are majorly represented in plants. Chlorophyll - Chlorophyll is a pigment that gives plants their green colour, and it helps plants create their own food through photosynthesis.
[Rajasthan PMT-2009]
Plant growth and development
166829
Movement of tendrils in response to touch is known as
1 nyctinastism
2 thigmotropism
3 seismonastism
4 haptonastism
Explanation:
B Movement of tendrils in response to touch is known as thigmotropism. Thigmotropism are movement that happen due to contact with foreign body. Tendrils are a long part that grows from a climbing plant. Nyctinastism- In plant, it refers to the nastic movement of leaves or petals of higher plants in response to darkness. Seismonastism- It refers to the movement which is shown by plants on receiving stimulus. Haptonastism - Haptonasty is a type of growth independent movement observed in Mimosa. In this type of movement, the leaflets fold, and the petioles droop in response to touch.
[UP CPMT-2010]
Plant growth and development
166830
The correct sequence of cellular growth stages is
C According to the given option, the correct sequence of cellular growth stages is as follows. division $\rightarrow$ elongation $\rightarrow$ differentiation Hence, correct answer is option (c).
[MGIMS Wardha-2014]
Plant growth and development
166831
When a plant has different types of leaves, the condition is known as:
1 heterophylly
2 anisophylly
3 myremecophylly
4 none of the above
Explanation:
A When a plant has different types of leaves, the condition is known as heterophylly. Heterophylly refers to the different shapes of leaves present at different stages of life or in different environmental conditions in a single plant. Anisophylly- It means that a plant has two or more shapes and sizes leaves. Myremecophyly- When ant takes its shelter on some trees such as mango, Litchi, Jamun etc, then this condition is related to myremecophily.
D The root system of a plant develops from the hypocotyls of the embryo of a seed. - In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order. - Root cap $\rightarrow$ Zone of cell division $\rightarrow$ Zone of cell enlargement $\rightarrow$ Zone of cell maturation. (i) Root cap zone - The apex of each root is covered by a cushion of thin walled cells known as root cap. (ii) Region of cell division - It lies just behind the root cap it is the main growing region of the root where active cell divisions take place. (iii) Region of elongation - The region of elongation is responsible for growth in length of the root. (iv) region of maturation - Epidermal cells of this region give out small, thin, cylindrical unicellular outgrowths, known as root hairs. These are the main absorbing organs of the root.
[AIPMT-2004]
Plant growth and development
166826
Which pigment involves in photoperiodic change in plants?
1 Phytochrome
2 Cytochrome
3 Chlorophyll
4 Anthocyanin
Explanation:
A Phytochrome pigment involve in photoperiodic change in plants. It is a pigment that present in green plants and is mainly responsible for photomorphogenic changes and development. Cytochrome- It is a iron containing heamoproteins. They are electron carriers and they involved in the generation of ATP via electron transport. Anthocyanin- It is mainly in the form of red to blue flavonoid pigments that are majorly represented in plants. Chlorophyll - Chlorophyll is a pigment that gives plants their green colour, and it helps plants create their own food through photosynthesis.
[Rajasthan PMT-2009]
Plant growth and development
166829
Movement of tendrils in response to touch is known as
1 nyctinastism
2 thigmotropism
3 seismonastism
4 haptonastism
Explanation:
B Movement of tendrils in response to touch is known as thigmotropism. Thigmotropism are movement that happen due to contact with foreign body. Tendrils are a long part that grows from a climbing plant. Nyctinastism- In plant, it refers to the nastic movement of leaves or petals of higher plants in response to darkness. Seismonastism- It refers to the movement which is shown by plants on receiving stimulus. Haptonastism - Haptonasty is a type of growth independent movement observed in Mimosa. In this type of movement, the leaflets fold, and the petioles droop in response to touch.
[UP CPMT-2010]
Plant growth and development
166830
The correct sequence of cellular growth stages is
C According to the given option, the correct sequence of cellular growth stages is as follows. division $\rightarrow$ elongation $\rightarrow$ differentiation Hence, correct answer is option (c).
[MGIMS Wardha-2014]
Plant growth and development
166831
When a plant has different types of leaves, the condition is known as:
1 heterophylly
2 anisophylly
3 myremecophylly
4 none of the above
Explanation:
A When a plant has different types of leaves, the condition is known as heterophylly. Heterophylly refers to the different shapes of leaves present at different stages of life or in different environmental conditions in a single plant. Anisophylly- It means that a plant has two or more shapes and sizes leaves. Myremecophyly- When ant takes its shelter on some trees such as mango, Litchi, Jamun etc, then this condition is related to myremecophily.
D The root system of a plant develops from the hypocotyls of the embryo of a seed. - In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order. - Root cap $\rightarrow$ Zone of cell division $\rightarrow$ Zone of cell enlargement $\rightarrow$ Zone of cell maturation. (i) Root cap zone - The apex of each root is covered by a cushion of thin walled cells known as root cap. (ii) Region of cell division - It lies just behind the root cap it is the main growing region of the root where active cell divisions take place. (iii) Region of elongation - The region of elongation is responsible for growth in length of the root. (iv) region of maturation - Epidermal cells of this region give out small, thin, cylindrical unicellular outgrowths, known as root hairs. These are the main absorbing organs of the root.
[AIPMT-2004]
Plant growth and development
166826
Which pigment involves in photoperiodic change in plants?
1 Phytochrome
2 Cytochrome
3 Chlorophyll
4 Anthocyanin
Explanation:
A Phytochrome pigment involve in photoperiodic change in plants. It is a pigment that present in green plants and is mainly responsible for photomorphogenic changes and development. Cytochrome- It is a iron containing heamoproteins. They are electron carriers and they involved in the generation of ATP via electron transport. Anthocyanin- It is mainly in the form of red to blue flavonoid pigments that are majorly represented in plants. Chlorophyll - Chlorophyll is a pigment that gives plants their green colour, and it helps plants create their own food through photosynthesis.
[Rajasthan PMT-2009]
Plant growth and development
166829
Movement of tendrils in response to touch is known as
1 nyctinastism
2 thigmotropism
3 seismonastism
4 haptonastism
Explanation:
B Movement of tendrils in response to touch is known as thigmotropism. Thigmotropism are movement that happen due to contact with foreign body. Tendrils are a long part that grows from a climbing plant. Nyctinastism- In plant, it refers to the nastic movement of leaves or petals of higher plants in response to darkness. Seismonastism- It refers to the movement which is shown by plants on receiving stimulus. Haptonastism - Haptonasty is a type of growth independent movement observed in Mimosa. In this type of movement, the leaflets fold, and the petioles droop in response to touch.
[UP CPMT-2010]
Plant growth and development
166830
The correct sequence of cellular growth stages is
C According to the given option, the correct sequence of cellular growth stages is as follows. division $\rightarrow$ elongation $\rightarrow$ differentiation Hence, correct answer is option (c).
[MGIMS Wardha-2014]
Plant growth and development
166831
When a plant has different types of leaves, the condition is known as:
1 heterophylly
2 anisophylly
3 myremecophylly
4 none of the above
Explanation:
A When a plant has different types of leaves, the condition is known as heterophylly. Heterophylly refers to the different shapes of leaves present at different stages of life or in different environmental conditions in a single plant. Anisophylly- It means that a plant has two or more shapes and sizes leaves. Myremecophyly- When ant takes its shelter on some trees such as mango, Litchi, Jamun etc, then this condition is related to myremecophily.
D The root system of a plant develops from the hypocotyls of the embryo of a seed. - In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order. - Root cap $\rightarrow$ Zone of cell division $\rightarrow$ Zone of cell enlargement $\rightarrow$ Zone of cell maturation. (i) Root cap zone - The apex of each root is covered by a cushion of thin walled cells known as root cap. (ii) Region of cell division - It lies just behind the root cap it is the main growing region of the root where active cell divisions take place. (iii) Region of elongation - The region of elongation is responsible for growth in length of the root. (iv) region of maturation - Epidermal cells of this region give out small, thin, cylindrical unicellular outgrowths, known as root hairs. These are the main absorbing organs of the root.
[AIPMT-2004]
Plant growth and development
166826
Which pigment involves in photoperiodic change in plants?
1 Phytochrome
2 Cytochrome
3 Chlorophyll
4 Anthocyanin
Explanation:
A Phytochrome pigment involve in photoperiodic change in plants. It is a pigment that present in green plants and is mainly responsible for photomorphogenic changes and development. Cytochrome- It is a iron containing heamoproteins. They are electron carriers and they involved in the generation of ATP via electron transport. Anthocyanin- It is mainly in the form of red to blue flavonoid pigments that are majorly represented in plants. Chlorophyll - Chlorophyll is a pigment that gives plants their green colour, and it helps plants create their own food through photosynthesis.
[Rajasthan PMT-2009]
Plant growth and development
166829
Movement of tendrils in response to touch is known as
1 nyctinastism
2 thigmotropism
3 seismonastism
4 haptonastism
Explanation:
B Movement of tendrils in response to touch is known as thigmotropism. Thigmotropism are movement that happen due to contact with foreign body. Tendrils are a long part that grows from a climbing plant. Nyctinastism- In plant, it refers to the nastic movement of leaves or petals of higher plants in response to darkness. Seismonastism- It refers to the movement which is shown by plants on receiving stimulus. Haptonastism - Haptonasty is a type of growth independent movement observed in Mimosa. In this type of movement, the leaflets fold, and the petioles droop in response to touch.
[UP CPMT-2010]
Plant growth and development
166830
The correct sequence of cellular growth stages is
C According to the given option, the correct sequence of cellular growth stages is as follows. division $\rightarrow$ elongation $\rightarrow$ differentiation Hence, correct answer is option (c).
[MGIMS Wardha-2014]
Plant growth and development
166831
When a plant has different types of leaves, the condition is known as:
1 heterophylly
2 anisophylly
3 myremecophylly
4 none of the above
Explanation:
A When a plant has different types of leaves, the condition is known as heterophylly. Heterophylly refers to the different shapes of leaves present at different stages of life or in different environmental conditions in a single plant. Anisophylly- It means that a plant has two or more shapes and sizes leaves. Myremecophyly- When ant takes its shelter on some trees such as mango, Litchi, Jamun etc, then this condition is related to myremecophily.
