Biology
Photosynthesis in Plants
1,508 Questions
Photosynthesis is the biological process by which plants convert light energy into chemical energy. This page contains practice questions covering essential topics like chlorophyll, light reactions, and the pathways specific to plants. This material is crucial for medical entrance exams and academic assessments.
Chlorophyll and pigmentsLight reactionsCalvin cycleCAM plantsElectron transportPhotosynthesis factors
Photosynthesis in Plants Questions
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Chlorenchyma
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Collenchyma
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Aerenchyma
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Phloem
A
Correct answer
Explanation
Chlorenchyma is a specialized type of parenchyma that contains a high concentration of chloroplasts. Its primary role is to perform photosynthesis, converting light energy into chemical energy. It is most commonly found in the green parts of plants, such as the mesophyll of leaves.
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carbonates
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carbon dioxide
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elemental carbon
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amino acids
B
Correct answer
Explanation
Plants obtain carbon primarily from atmospheric carbon dioxide (CO2) during photosynthesis. This carbon is fixed into organic molecules like glucose, which serve as the building blocks for the plant's structure and energy.
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CO2 and O2
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O2 and glucose
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CO2 and water
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Glucose and water
B
Correct answer
Explanation
Photosynthesis is the process by which plants use sunlight to convert water and carbon dioxide into glucose and oxygen. Glucose provides energy for the plant, while oxygen is released as a byproduct into the atmosphere.
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ATP
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Quinon
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Chlorophyll
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Cytochrome
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Light
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Red
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Blue
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Yellow
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Green
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Orange
B
Correct answer
Explanation
As the wavelength decreases, the energy increases. It is indirectly proportional. Blue light has maximum energy as compared to the other colours of light.
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Sugar
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Starch
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Fats
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Proteins
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Vitamins
A
Correct answer
Explanation
Sugar is a simple form of carbohydrates as compared to starch, fats and proteins. It uses sugar as the first food substance.
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Nucleus
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Nucleolus
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Cell membrane
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Peptidoglycan layer
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Outer membrane
C
Correct answer
Explanation
In photosynthetic bacteria, the proteins that gather light for photosynthesis are embedded within cell membranes.
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Non-absorbed part of the light spectrum
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Absorbed part of the light spectrum
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Accessory pigments
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Chemical components
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Chemiosmotic potential
A
Correct answer
Explanation
The non-absorbed part of the light spectrum gives photosynthetic organisms their colour.
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it gives out CO2 for dark reaction
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it splits to provide hydrogen ions
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it quickly absorbs CO2
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it releases oxygen
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it is inert
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Forests
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Marine photoplankton
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Land mass
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Crops
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Green lands
B
Correct answer
Explanation
The plants which survive in water are known as photoplanktons. These plants take oxygen in the dissolved state.
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Light
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Temperature
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Water
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Chlorophyll
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None of these
B
Correct answer
Explanation
Temperature has very less effect or no effect on the process of photosynthesis. Whereas light, water and chlorophyll have more effect on photosynthesis.
A
Correct answer
Explanation
NADPH is the main reducing agent in chloroplasts.
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Calvin cycle
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TCA cycle
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Krebs cycle
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Biological cycle
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Photosynthetic cycle
A
Correct answer
Explanation
In plants, algae and cyanobacteria, sugars are produced by a subsequent sequence of light-independent reactions called the Calvin cycle.
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Water
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Oxygen
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Carbon dioxide
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Nitrogen
B
Correct answer
Explanation
During photosynthesis, plants use carbon dioxide and water to produce glucose. Oxygen is released as a byproduct or waste gas into the atmosphere through the stomata.
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Parenchyma
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Aerenchyma
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Chlorenchyma
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Collenchyma
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Sclerenchyma
C
Correct answer
Explanation
Chlorenchyma contains chlorophyll and performs photosynthesis. It can be seen in the mesophyll of leaves.