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

Which of the following is NOT a key component of the carbon cycle?

  1. Photosynthesis

  2. Respiration

  3. Decomposition

  4. Volcanism
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

While photosynthesis, respiration, and decomposition are all key components of the carbon cycle, volcanism is not directly involved in the cycling of carbon. Volcanism can release carbon dioxide into the atmosphere, but this is a relatively minor source of carbon compared to the other processes.

Multiple choice

What is the process by which plants convert sunlight into 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 oxygen and energy in the form of glucose.

Multiple choice

What is the term for the process by which plants take in carbon dioxide from the atmosphere?

  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 take in carbon dioxide from the atmosphere and use it to produce glucose and oxygen.

Multiple choice

Which process utilizes light energy to convert carbon dioxide and water into glucose and oxygen?

  1. Cellular Respiration

  2. Glycolysis

  3. Photosynthesis

  4. Electron Transport Chain
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Photosynthesis is the process by which plants and certain microorganisms use light energy to convert carbon dioxide and water into glucose and oxygen.

Multiple choice

What is the primary site of photosynthesis in plants?

  1. Chloroplasts

  2. Mitochondria

  3. Vacuoles

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

Chloroplasts are specialized organelles in plant cells that contain chlorophyll, the pigment responsible for capturing light energy during photosynthesis.

Multiple choice

Which stage of photosynthesis involves the fixation of carbon dioxide into organic compounds?

  1. Light-Dependent Reactions

  2. Calvin Cycle

  3. Electron Transport Chain

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

The Calvin Cycle, also known as the Dark Reactions, is the stage of photosynthesis where carbon dioxide is fixed into organic compounds using energy from ATP and NADPH.

Multiple choice

How do seagrasses contribute to carbon sequestration?

  1. They absorb carbon dioxide during photosynthesis

  2. They store carbon in their roots and sediments

  3. They release oxygen into the atmosphere

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Seagrasses not only absorb carbon dioxide during photosynthesis but also store carbon in their extensive root systems and surrounding sediments.

Multiple choice

What is the process by which plants absorb carbon dioxide and release oxygen during photosynthesis?

  1. Cellular respiration

  2. Photolysis

  3. Transpiration

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

Photosynthesis is the process by which plants absorb carbon dioxide and release oxygen during photosynthesis.

Multiple choice

What is the term for the process by which plants convert sunlight into 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 create glucose and oxygen.

Multiple choice

What is the primary mechanism for the formation of the F2-region?

  1. Photoionization

  2. Recombination

  3. Attachment

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

Photoionization, driven by solar radiation, is the primary mechanism responsible for the formation of the F2-region, which is the highest layer of the ionosphere.

Multiple choice

What is the term used to describe the process by which plants use sunlight, water, and carbon dioxide to produce food?

  1. Photosynthesis

  2. Respiration

  3. Transpiration

  4. Decomposition
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 food in the form of glucose.

Multiple choice

The process by which carbon dioxide is removed from the atmosphere by plants during photosynthesis is called:

  1. Carbon sequestration

  2. Carbon dioxide fixation

  3. Carbon assimilation

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

Carbon dioxide fixation is the process by which carbon dioxide is removed from the atmosphere by plants during photosynthesis.

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 Capture and Storage

  3. Carbon Neutralization

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

Carbon sequestration refers to the process by which plants absorb carbon dioxide from the atmosphere during photosynthesis and store it in their tissues.

Multiple choice

The process by which plants absorb carbon dioxide and release oxygen during photosynthesis is known as:

  1. Carbon sequestration

  2. Oxygen production

  3. Photosynthesis

  4. Carbon fixation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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

Multiple choice

Which type of plankton is known for its ability to photosynthesize?

  1. Zooplankton

  2. Phytoplankton

  3. Benthos

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

Phytoplankton are microscopic algae that are responsible for a significant portion of the Earth's oxygen production.