4 filamentous alga with flagellated reproductive stages
Explanation:
(d)
NCERT Page-30 / N-26
PLANT KINGDOM(NCERT)
286685
Why rhodophyta exhibit a red colour ?
1 Since most rhodophyta grow at great depths, the chlorophyll can only absorb light in the red area of the spectrum.
2 The wavelengths of light that are absorbed by chlorophyll are passed to phycoerythrin (a red pigment).
3 Red pigment of rhodophyta absorbs all the light waves.
4 The light reaching the greatest depth in water is in the blue-green region of the spectrum, is absorbed by phycoerythrin.
Explanation:
(b)Rhodophyta are commonly called as red algae because of the predominance of the red pigment $(r-$ phycoerythrin) in their body. They occur in both well lighted regions close to the surface of water and also at great depths in ocean where relatively little light penetrates. They exhibit a red colour because the wavelengths of light that are absorbed by chlorophyll are passed to phycoerythrin.
NCERT Page-33 / N-27
PLANT KINGDOM(NCERT)
286686
Algin, carrageen and proteins are obtained from
1 red algae, brown algae, green algae respectively.
2 brown algae, red algae, green algae respectively.
3 red algae, green algae, brown algae respectively.
4 green algae, brown algae, red algae respectively.
Explanation:
(b)Certain marine brown and red algae produce large amounts of hydrocolloids (water holding substances), e.g., algin (brown algae) and carrageen (red algae) which are used commercially. Chlorella and Spirullina are unicellular green algae, which are rich in proteins and used as food supplements.
NCERT Page-33 / N-26
PLANT KINGDOM(NCERT)
286687
Pyrenoids in green algal cells are related to
1 starch formation
2 protein storage
3 general metabolism
4 enzyme secretion
Explanation:
(a) Pyrenoids are the rounded bodies found in the chloroplast of green algae and are the centres of conversion of glucose to starch and also collection of starch.
4 filamentous alga with flagellated reproductive stages
Explanation:
(d)
NCERT Page-30 / N-26
PLANT KINGDOM(NCERT)
286685
Why rhodophyta exhibit a red colour ?
1 Since most rhodophyta grow at great depths, the chlorophyll can only absorb light in the red area of the spectrum.
2 The wavelengths of light that are absorbed by chlorophyll are passed to phycoerythrin (a red pigment).
3 Red pigment of rhodophyta absorbs all the light waves.
4 The light reaching the greatest depth in water is in the blue-green region of the spectrum, is absorbed by phycoerythrin.
Explanation:
(b)Rhodophyta are commonly called as red algae because of the predominance of the red pigment $(r-$ phycoerythrin) in their body. They occur in both well lighted regions close to the surface of water and also at great depths in ocean where relatively little light penetrates. They exhibit a red colour because the wavelengths of light that are absorbed by chlorophyll are passed to phycoerythrin.
NCERT Page-33 / N-27
PLANT KINGDOM(NCERT)
286686
Algin, carrageen and proteins are obtained from
1 red algae, brown algae, green algae respectively.
2 brown algae, red algae, green algae respectively.
3 red algae, green algae, brown algae respectively.
4 green algae, brown algae, red algae respectively.
Explanation:
(b)Certain marine brown and red algae produce large amounts of hydrocolloids (water holding substances), e.g., algin (brown algae) and carrageen (red algae) which are used commercially. Chlorella and Spirullina are unicellular green algae, which are rich in proteins and used as food supplements.
NCERT Page-33 / N-26
PLANT KINGDOM(NCERT)
286687
Pyrenoids in green algal cells are related to
1 starch formation
2 protein storage
3 general metabolism
4 enzyme secretion
Explanation:
(a) Pyrenoids are the rounded bodies found in the chloroplast of green algae and are the centres of conversion of glucose to starch and also collection of starch.
4 filamentous alga with flagellated reproductive stages
Explanation:
(d)
NCERT Page-30 / N-26
PLANT KINGDOM(NCERT)
286685
Why rhodophyta exhibit a red colour ?
1 Since most rhodophyta grow at great depths, the chlorophyll can only absorb light in the red area of the spectrum.
2 The wavelengths of light that are absorbed by chlorophyll are passed to phycoerythrin (a red pigment).
3 Red pigment of rhodophyta absorbs all the light waves.
4 The light reaching the greatest depth in water is in the blue-green region of the spectrum, is absorbed by phycoerythrin.
Explanation:
(b)Rhodophyta are commonly called as red algae because of the predominance of the red pigment $(r-$ phycoerythrin) in their body. They occur in both well lighted regions close to the surface of water and also at great depths in ocean where relatively little light penetrates. They exhibit a red colour because the wavelengths of light that are absorbed by chlorophyll are passed to phycoerythrin.
NCERT Page-33 / N-27
PLANT KINGDOM(NCERT)
286686
Algin, carrageen and proteins are obtained from
1 red algae, brown algae, green algae respectively.
2 brown algae, red algae, green algae respectively.
3 red algae, green algae, brown algae respectively.
4 green algae, brown algae, red algae respectively.
Explanation:
(b)Certain marine brown and red algae produce large amounts of hydrocolloids (water holding substances), e.g., algin (brown algae) and carrageen (red algae) which are used commercially. Chlorella and Spirullina are unicellular green algae, which are rich in proteins and used as food supplements.
NCERT Page-33 / N-26
PLANT KINGDOM(NCERT)
286687
Pyrenoids in green algal cells are related to
1 starch formation
2 protein storage
3 general metabolism
4 enzyme secretion
Explanation:
(a) Pyrenoids are the rounded bodies found in the chloroplast of green algae and are the centres of conversion of glucose to starch and also collection of starch.
4 filamentous alga with flagellated reproductive stages
Explanation:
(d)
NCERT Page-30 / N-26
PLANT KINGDOM(NCERT)
286685
Why rhodophyta exhibit a red colour ?
1 Since most rhodophyta grow at great depths, the chlorophyll can only absorb light in the red area of the spectrum.
2 The wavelengths of light that are absorbed by chlorophyll are passed to phycoerythrin (a red pigment).
3 Red pigment of rhodophyta absorbs all the light waves.
4 The light reaching the greatest depth in water is in the blue-green region of the spectrum, is absorbed by phycoerythrin.
Explanation:
(b)Rhodophyta are commonly called as red algae because of the predominance of the red pigment $(r-$ phycoerythrin) in their body. They occur in both well lighted regions close to the surface of water and also at great depths in ocean where relatively little light penetrates. They exhibit a red colour because the wavelengths of light that are absorbed by chlorophyll are passed to phycoerythrin.
NCERT Page-33 / N-27
PLANT KINGDOM(NCERT)
286686
Algin, carrageen and proteins are obtained from
1 red algae, brown algae, green algae respectively.
2 brown algae, red algae, green algae respectively.
3 red algae, green algae, brown algae respectively.
4 green algae, brown algae, red algae respectively.
Explanation:
(b)Certain marine brown and red algae produce large amounts of hydrocolloids (water holding substances), e.g., algin (brown algae) and carrageen (red algae) which are used commercially. Chlorella and Spirullina are unicellular green algae, which are rich in proteins and used as food supplements.
NCERT Page-33 / N-26
PLANT KINGDOM(NCERT)
286687
Pyrenoids in green algal cells are related to
1 starch formation
2 protein storage
3 general metabolism
4 enzyme secretion
Explanation:
(a) Pyrenoids are the rounded bodies found in the chloroplast of green algae and are the centres of conversion of glucose to starch and also collection of starch.
4 filamentous alga with flagellated reproductive stages
Explanation:
(d)
NCERT Page-30 / N-26
PLANT KINGDOM(NCERT)
286685
Why rhodophyta exhibit a red colour ?
1 Since most rhodophyta grow at great depths, the chlorophyll can only absorb light in the red area of the spectrum.
2 The wavelengths of light that are absorbed by chlorophyll are passed to phycoerythrin (a red pigment).
3 Red pigment of rhodophyta absorbs all the light waves.
4 The light reaching the greatest depth in water is in the blue-green region of the spectrum, is absorbed by phycoerythrin.
Explanation:
(b)Rhodophyta are commonly called as red algae because of the predominance of the red pigment $(r-$ phycoerythrin) in their body. They occur in both well lighted regions close to the surface of water and also at great depths in ocean where relatively little light penetrates. They exhibit a red colour because the wavelengths of light that are absorbed by chlorophyll are passed to phycoerythrin.
NCERT Page-33 / N-27
PLANT KINGDOM(NCERT)
286686
Algin, carrageen and proteins are obtained from
1 red algae, brown algae, green algae respectively.
2 brown algae, red algae, green algae respectively.
3 red algae, green algae, brown algae respectively.
4 green algae, brown algae, red algae respectively.
Explanation:
(b)Certain marine brown and red algae produce large amounts of hydrocolloids (water holding substances), e.g., algin (brown algae) and carrageen (red algae) which are used commercially. Chlorella and Spirullina are unicellular green algae, which are rich in proteins and used as food supplements.
NCERT Page-33 / N-26
PLANT KINGDOM(NCERT)
286687
Pyrenoids in green algal cells are related to
1 starch formation
2 protein storage
3 general metabolism
4 enzyme secretion
Explanation:
(a) Pyrenoids are the rounded bodies found in the chloroplast of green algae and are the centres of conversion of glucose to starch and also collection of starch.