337436
The pigment molecules responsible for photosynthesis are located in the
1 Cytoplasm of the cell.
2 Matrix of the mitochondria.
3 Thylakoid membrane of the chloroplast.
4 All of the above
Explanation:
Pigments are chemical compounds which reflect only certain wavelengths of visible light. More important than their reflection of light is the ability of pigments to absorb certain wavelengths. Because they interact with light to absorb only certain wavelengths, pigments are useful to plants and other autotrophs organisms which make their own food using photosynthesis. Photosynthetic pigments are located in the membranes of the thylakoid membranes in specific areas called quantasomes. The quantasomes are mainly present in grana lamellae.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337437
Absorption spectrum of chlorophyll-a and the action spectrum of photosynthesis is identical because chlorophyll-a
1 Absorbs the red and violet light
2 Absorbs the red and blue light
3 Adsorbs the minimum light
4 More than one option is correct
Explanation:
Action spectrum of photosynthesis corresponds closely to absorption spectra of chlorophyll a showing that chlorophyll a is the chief pigment. It absorbs red and blue light, wavelengths at which most photosynthesis takes place.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337438
Which of the given pigment does not play role in photosynthesis?
1 Xanthophyll
2 Carotenes
3 Phycocyanin
4 Anthocyanin
Explanation:
Xanthophyll and Carotenoids are accessory photosynthetic pigments. Phycocyanin is a blue photosynthetic pigment in cyanobacteria. Anthocyanin is a type of flavonoid. It is responsible for the coloration of fruits, vegetables, flowers and grains. It plays no role in photosynthesis.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337439
Assertion : The action spectrum of photosynthesis does not parallel the absorption spectrum of chlorophyll exactly Reason : Accessory pigments of carotenoids transfer some of the energy of excitation produced by green light to chlorophyll molecules
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
The action spectrum of of photosynthesis does not coincide with the absorption spectrum of chlorophyll-a exactly. This is because a lot of accessory pigments also participate in the absorption of light energy which make a small difference in the graphs. Accessory pigments like chlorophyll-b, carotenoids, xanthophylls play a role here.
337436
The pigment molecules responsible for photosynthesis are located in the
1 Cytoplasm of the cell.
2 Matrix of the mitochondria.
3 Thylakoid membrane of the chloroplast.
4 All of the above
Explanation:
Pigments are chemical compounds which reflect only certain wavelengths of visible light. More important than their reflection of light is the ability of pigments to absorb certain wavelengths. Because they interact with light to absorb only certain wavelengths, pigments are useful to plants and other autotrophs organisms which make their own food using photosynthesis. Photosynthetic pigments are located in the membranes of the thylakoid membranes in specific areas called quantasomes. The quantasomes are mainly present in grana lamellae.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337437
Absorption spectrum of chlorophyll-a and the action spectrum of photosynthesis is identical because chlorophyll-a
1 Absorbs the red and violet light
2 Absorbs the red and blue light
3 Adsorbs the minimum light
4 More than one option is correct
Explanation:
Action spectrum of photosynthesis corresponds closely to absorption spectra of chlorophyll a showing that chlorophyll a is the chief pigment. It absorbs red and blue light, wavelengths at which most photosynthesis takes place.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337438
Which of the given pigment does not play role in photosynthesis?
1 Xanthophyll
2 Carotenes
3 Phycocyanin
4 Anthocyanin
Explanation:
Xanthophyll and Carotenoids are accessory photosynthetic pigments. Phycocyanin is a blue photosynthetic pigment in cyanobacteria. Anthocyanin is a type of flavonoid. It is responsible for the coloration of fruits, vegetables, flowers and grains. It plays no role in photosynthesis.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337439
Assertion : The action spectrum of photosynthesis does not parallel the absorption spectrum of chlorophyll exactly Reason : Accessory pigments of carotenoids transfer some of the energy of excitation produced by green light to chlorophyll molecules
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
The action spectrum of of photosynthesis does not coincide with the absorption spectrum of chlorophyll-a exactly. This is because a lot of accessory pigments also participate in the absorption of light energy which make a small difference in the graphs. Accessory pigments like chlorophyll-b, carotenoids, xanthophylls play a role here.
337436
The pigment molecules responsible for photosynthesis are located in the
1 Cytoplasm of the cell.
2 Matrix of the mitochondria.
3 Thylakoid membrane of the chloroplast.
4 All of the above
Explanation:
Pigments are chemical compounds which reflect only certain wavelengths of visible light. More important than their reflection of light is the ability of pigments to absorb certain wavelengths. Because they interact with light to absorb only certain wavelengths, pigments are useful to plants and other autotrophs organisms which make their own food using photosynthesis. Photosynthetic pigments are located in the membranes of the thylakoid membranes in specific areas called quantasomes. The quantasomes are mainly present in grana lamellae.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337437
Absorption spectrum of chlorophyll-a and the action spectrum of photosynthesis is identical because chlorophyll-a
1 Absorbs the red and violet light
2 Absorbs the red and blue light
3 Adsorbs the minimum light
4 More than one option is correct
Explanation:
Action spectrum of photosynthesis corresponds closely to absorption spectra of chlorophyll a showing that chlorophyll a is the chief pigment. It absorbs red and blue light, wavelengths at which most photosynthesis takes place.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337438
Which of the given pigment does not play role in photosynthesis?
1 Xanthophyll
2 Carotenes
3 Phycocyanin
4 Anthocyanin
Explanation:
Xanthophyll and Carotenoids are accessory photosynthetic pigments. Phycocyanin is a blue photosynthetic pigment in cyanobacteria. Anthocyanin is a type of flavonoid. It is responsible for the coloration of fruits, vegetables, flowers and grains. It plays no role in photosynthesis.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337439
Assertion : The action spectrum of photosynthesis does not parallel the absorption spectrum of chlorophyll exactly Reason : Accessory pigments of carotenoids transfer some of the energy of excitation produced by green light to chlorophyll molecules
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
The action spectrum of of photosynthesis does not coincide with the absorption spectrum of chlorophyll-a exactly. This is because a lot of accessory pigments also participate in the absorption of light energy which make a small difference in the graphs. Accessory pigments like chlorophyll-b, carotenoids, xanthophylls play a role here.
337436
The pigment molecules responsible for photosynthesis are located in the
1 Cytoplasm of the cell.
2 Matrix of the mitochondria.
3 Thylakoid membrane of the chloroplast.
4 All of the above
Explanation:
Pigments are chemical compounds which reflect only certain wavelengths of visible light. More important than their reflection of light is the ability of pigments to absorb certain wavelengths. Because they interact with light to absorb only certain wavelengths, pigments are useful to plants and other autotrophs organisms which make their own food using photosynthesis. Photosynthetic pigments are located in the membranes of the thylakoid membranes in specific areas called quantasomes. The quantasomes are mainly present in grana lamellae.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337437
Absorption spectrum of chlorophyll-a and the action spectrum of photosynthesis is identical because chlorophyll-a
1 Absorbs the red and violet light
2 Absorbs the red and blue light
3 Adsorbs the minimum light
4 More than one option is correct
Explanation:
Action spectrum of photosynthesis corresponds closely to absorption spectra of chlorophyll a showing that chlorophyll a is the chief pigment. It absorbs red and blue light, wavelengths at which most photosynthesis takes place.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337438
Which of the given pigment does not play role in photosynthesis?
1 Xanthophyll
2 Carotenes
3 Phycocyanin
4 Anthocyanin
Explanation:
Xanthophyll and Carotenoids are accessory photosynthetic pigments. Phycocyanin is a blue photosynthetic pigment in cyanobacteria. Anthocyanin is a type of flavonoid. It is responsible for the coloration of fruits, vegetables, flowers and grains. It plays no role in photosynthesis.
BIOXI13: PHOTOSYNTHESIS IN HIGHER PLANTS
337439
Assertion : The action spectrum of photosynthesis does not parallel the absorption spectrum of chlorophyll exactly Reason : Accessory pigments of carotenoids transfer some of the energy of excitation produced by green light to chlorophyll molecules
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
The action spectrum of of photosynthesis does not coincide with the absorption spectrum of chlorophyll-a exactly. This is because a lot of accessory pigments also participate in the absorption of light energy which make a small difference in the graphs. Accessory pigments like chlorophyll-b, carotenoids, xanthophylls play a role here.
