Biology

Photosynthesis in Plants

1,492 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

Multiple choice

What is the first stage of photosynthesis?

  1. Light-dependent reactions

  2. Calvin cycle

  3. Glycolysis

  4. Krebs cycle
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The light-dependent reactions are the first stage of photosynthesis. They occur in the thylakoid membranes of chloroplasts and involve the use of light energy to split water molecules and generate ATP and NADPH.

Multiple choice

What is the role of the Calvin cycle in photosynthesis?

  1. To generate ATP

  2. To produce NADPH

  3. To fix carbon dioxide into organic molecules

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Calvin cycle, also known as the dark reactions of photosynthesis, occurs in the stroma of chloroplasts. Its primary role is to fix carbon dioxide from the atmosphere into organic molecules, such as glucose.

Multiple choice

Which of the following is a product of photosynthesis?

  1. Glucose

  2. Oxygen

  3. Water

  4. Carbon dioxide
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Glucose is a product of photosynthesis. It is a sugar molecule that is used by plants as a source of energy and by other organisms as a food source.

Multiple choice

What is the overall equation for photosynthesis?

  1. 6CO2 + 6H2O + Energy → C6H12O6 + 6O2

  2. C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy

  3. C6H12O6 → 2C2H5OH + 2CO2 + Energy

  4. 2C2H5OH + 2CO2 + Energy → C6H12O6
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The overall equation for photosynthesis is 6CO2 + 6H2O + Energy → C6H12O6 + 6O2. This equation represents the conversion of carbon dioxide (CO2) and water (H2O) into glucose (C6H12O6) and oxygen (O2) using energy from the sun.

Multiple choice

What is the primary source of energy for photosynthesis in plants?

  1. Infrared radiation

  2. Ultraviolet radiation

  3. Visible light

  4. X-rays
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Visible light is the primary source of energy for photosynthesis in plants, which convert it into chemical energy through the process of photosynthesis.

Multiple choice

What is the term for the process by which marine organisms produce oxygen through photosynthesis?

  1. Primary production

  2. Secondary production

  3. Tertiary production

  4. Quaternary production
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Primary production is the process by which marine organisms produce oxygen through photosynthesis. Photosynthesis is the process by which plants and other organisms use sunlight to convert carbon dioxide and water into glucose and oxygen. Primary production is the foundation of the marine food web.

Multiple choice

What is the term used to describe the process by which plants absorb carbon dioxide from the atmosphere during photosynthesis?

  1. Carbon Sequestration

  2. Carbon Fixation

  3. Carbon Capture and Storage

  4. Carbon Trading
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbon Fixation is the process by which plants absorb carbon dioxide from the atmosphere during photosynthesis. This process converts carbon dioxide into organic compounds, which are used by plants for growth and energy production.

Multiple choice

What is the process by which plants convert sunlight into energy?

  1. Photosynthesis

  2. Cellular Respiration

  3. Fermentation

  4. Glycolysis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create glucose, which is a form of energy.

Multiple choice

What is the process by which plants convert light energy into chemical energy?

  1. Photosynthesis

  2. Cellular respiration

  3. Glycolysis

  4. Krebs cycle
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to produce glucose and oxygen.

Multiple choice

What is the term used to describe the process by which plants convert sunlight into chemical energy?

  1. Photosynthesis

  2. Cellular Respiration

  3. Transpiration

  4. Nitrogen Fixation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to produce glucose and oxygen.

Multiple choice

What is the process by which microorganisms convert inorganic compounds into organic compounds using energy from the sun?

  1. Photosynthesis

  2. Chemosynthesis

  3. Glycolysis

  4. Respiration
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Photosynthesis is the process by which microorganisms convert inorganic compounds into organic compounds using energy from the sun.

Multiple choice

Which of the following is NOT a type of microbial photosynthesis?

  1. Oxygenic photosynthesis

  2. Anoxygenic photosynthesis

  3. Cyclic photophosphorylation

  4. Non-cyclic photophosphorylation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cyclic photophosphorylation is not a type of microbial photosynthesis, but rather a process that occurs in plants to generate ATP.

Multiple choice

What is the term for the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen?

  1. Photosynthesis

  2. Cellular respiration

  3. Fermentation

  4. Glycolysis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

Multiple choice

What is the process by which cells use light energy to convert carbon dioxide and water into glucose?

  1. Cellular respiration

  2. Photosynthesis

  3. Glycolysis

  4. Catabolism
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Photosynthesis is the process by which plants and some other organisms use light energy to convert carbon dioxide and water into glucose, releasing oxygen as a byproduct.

Multiple choice

What is the primary photosynthetic pigment found in algae?

  1. Chlorophyll a

  2. Chlorophyll b

  3. Carotene

  4. Phycoerythrin
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chlorophyll a is the primary photosynthetic pigment found in algae. It is responsible for capturing light energy from the sun and converting it into chemical energy.