Biology
Grade-7
Easy
Question
- Photosynthetic organisms introduce chemical energy and fixed carbon into the ecosystem by using light to synthesize sugar
- The lamina is used for absorption of sunlight and carbondioxide during Photosynthesis.
- Pigments are the most that imparts colour and absorb light at some specific wavelength and reflect back the unabsorbed light.
- Photisystems have large complex of pigment and protein molecules present within the plant cells , which play primary role during the light reactions of photosynthesis
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Chlorophylls absorb light energy, which is converted into chemical energy through the formation of two compounds, ATP— an energy storage molecule, and NADPH— a reduced (electron-bearing) electron carrier. State true or false.
Chlorophylls absorb light energy, which is converted into chemical energy through the formation of two compounds, ATP— an energy storage molecule, and NADPH— a reduced (electron-bearing) electron carrier. State true or false.
BiologyGrade-7
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__________ diffuse carbon dioxide into the mesophyll layer and let the oxygen out.
__________ diffuse carbon dioxide into the mesophyll layer and let the oxygen out.
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Pick the odd one out.
Pick the odd one out.
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Photosynthetic organisms also remove large quantities of carbon dioxide from the atmosphere and use the carbon atoms to build ________________.
Photosynthetic organisms also remove large quantities of carbon dioxide from the atmosphere and use the carbon atoms to build ________________.
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Analyze the type of cells present on the surface of leaves of the plants that absorb carbon dioxide from the atmosphere.
Stomatal pore is surrounded by guard cells
Analyze the type of cells present on the surface of leaves of the plants that absorb carbon dioxide from the atmosphere.
BiologyGrade-7
Stomatal pore is surrounded by guard cells
Biology
A  |
1. These are the primary sites of photosynthesis |
B  |
2. The light-dependent reactions |
C  |
3. The light-independent reactions |
| A |
1. These are the primary sites of photosynthesis |
| B |
2. The light-dependent reactions |
| C |
3. The light-independent reactions |
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Suggest one word for each of the following statements.
1. Each __________ cell contains organelles called chloroplasts, which are specialized in carrying out the reactions of photosynthesis.
2. The light-dependent reactions take place in the _________membrane and require a continuous supply of light energy.
3. The Calvin cycle, also called the light-independent reactions, takes place in the ___________.
4. Different chemical reactions occur in the different parts of the ________.
Suggest one word for each of the following statements.
1. Each __________ cell contains organelles called chloroplasts, which are specialized in carrying out the reactions of photosynthesis.
2. The light-dependent reactions take place in the _________membrane and require a continuous supply of light energy.
3. The Calvin cycle, also called the light-independent reactions, takes place in the ___________.
4. Different chemical reactions occur in the different parts of the ________.
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Observe the image and choose the correct statement.
Observe the image and choose the correct statement.
BiologyGrade-7
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Choose the odd one out
Choose the odd one out
BiologyGrade-7
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Carbon dioxide enters the plant through the stroma of the chloroplast. State true or false.
Carbon dioxide enters the plant through the stroma of the chloroplast. State true or false.
BiologyGrade-7
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Choose the correct statement in terms of photosynthetic pigments.
Choose the correct statement in terms of photosynthetic pigments.
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________________transform light energy into chemical energy through a process called photosynthesis, which is then used to energize cellular processes.
________________transform light energy into chemical energy through a process called photosynthesis, which is then used to energize cellular processes.
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_______________ is a green pigment that can be found in the mesosomes of cyanobacteria and the chloroplasts of plant cells.
_______________ is a green pigment that can be found in the mesosomes of cyanobacteria and the chloroplasts of plant cells.
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Match the following:
| 1.Carbon dioxide and water |
a. A higher carbon dioxide concentration |
| 2. Formation of glucose |
b. The two reactants in the photosynthesis reaction |
| 3. Speed up the process of photosynthesis |
c. Carbon dioxide from the air and hydrogen from water molecules are combined |
Match the following:
| 1.Carbon dioxide and water |
a. A higher carbon dioxide concentration |
| 2. Formation of glucose |
b. The two reactants in the photosynthesis reaction |
| 3. Speed up the process of photosynthesis |
c. Carbon dioxide from the air and hydrogen from water molecules are combined |
BiologyGrade-7
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Usually, carbon dioxide in the range of ___________ is adequate for photosynthesis.
Usually, carbon dioxide in the range of ___________ is adequate for photosynthesis.
BiologyGrade-7
