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

  1. Carbon sequestration

  2. Carbon capture

  3. Carbon storage

  4. Carbon offset
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

Which type of microorganism is responsible for the production of oxygen through photosynthesis?

  1. Bacteria

  2. Viruses

  3. Fungi

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

Protists, specifically algae, are responsible for a significant portion of oxygen production through photosynthesis.

Multiple choice

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

  1. Cellular Respiration

  2. Photosynthesis

  3. Glycolysis

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

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to synthesize glucose and release oxygen as a byproduct.

Multiple choice

Which pigment in plants is responsible for capturing light energy during photosynthesis?

  1. Chlorophyll a

  2. Chlorophyll b

  3. Carotenoids

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

Chlorophyll a is the primary pigment in plants that absorbs light energy from the sun, enabling the conversion of light energy into chemical energy during photosynthesis.

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 and are responsible for carrying out photosynthesis, converting light energy into chemical energy.

Multiple choice

Which molecule is the primary electron acceptor in the light-dependent reactions of photosynthesis?

  1. NADP+

  2. FAD

  3. CoQ

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

NADP+ is the primary electron acceptor in the light-dependent reactions of photosynthesis, accepting electrons from excited chlorophyll molecules to generate NADPH.

Multiple choice

What is the primary product of the Calvin Cycle in photosynthesis?

  1. Glucose

  2. Pyruvate

  3. Acetyl-CoA

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

The Calvin Cycle, also known as the light-independent reactions of photosynthesis, uses ATP and NADPH generated in the light-dependent reactions to fix carbon dioxide and produce glucose.

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 convert sunlight into energy.

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 convert sunlight into energy.

Multiple choice

What is the name of the process by which molecules form in space?

  1. Nucleosynthesis

  2. Photodissociation

  3. Recombination

  4. Ion-molecule reactions
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ion-molecule reactions are the primary mechanism by which molecules form in space. These reactions involve the transfer of charge between ions and molecules, leading to the formation of new chemical bonds.

Multiple choice

What is the process by which phytoplankton convert carbon dioxide into organic matter?

  1. Photosynthesis

  2. Chemosynthesis

  3. Nitrogen fixation

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

Photosynthesis is the process by which phytoplankton convert carbon dioxide into organic matter using sunlight as an energy source.

Multiple choice

What is the term for the process by which marine organisms take up and release oxygen?

  1. Photosynthesis

  2. Chemosynthesis

  3. Nitrogen fixation

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

Respiration is the process by which marine organisms take up and release oxygen.

Multiple choice

Which of these is considered the first photosynthetic organism?

  1. Cyanobacteria

  2. Green Algae

  3. Bryophytes

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

Cyanobacteria, also known as blue-green algae, are believed to be the earliest photosynthetic organisms, appearing around 3.5 billion years ago.

Multiple choice

What is the term for 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, carbon dioxide, and water to produce glucose and oxygen, releasing oxygen as a byproduct.

Multiple choice

What is the name of the process by which plants use sunlight to convert carbon dioxide and water into glucose?

  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.