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
  1. carbon dioxide and water

  2. carbon dioxide and glucose

  3. glucose and water

  4. oxygen and glucose

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

During photosynthesis, plants use carbon dioxide, water, and light energy to synthesize glucose and release oxygen as a byproduct. Therefore, glucose and oxygen are the products of this process. Carbon dioxide and water are the reactants, not the products.

Multiple choice
  1. carbon dioxide and water

  2. carbon dioxide and oxygen

  3. glucose and oxygen

  4. carbon dioxide and glucose

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Photosynthesis is the process by which plants convert carbon dioxide and water into glucose and oxygen using light energy. This makes carbon dioxide and water the starting materials, or reactants, of the reaction.

Multiple choice
  1. nucleus

  2. cytoplasm

  3. chloroplast

  4. mitochondrion

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Photosynthesis takes place inside the chloroplasts, which are specialized organelles found in plant cells and some algae. Chloroplasts contain the pigments and enzymes necessary to capture light energy and convert it into chemical energy.

Multiple choice
  1. Nucleus

  2. Cytoplasm

  3. Vacuole

  4. Chloroplast

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Chloroplasts are the specialized organelles in plant cells that contain chlorophyll and perform photosynthesis to produce food. Other organelles like the nucleus control cell activities, while the vacuole stores water and nutrients.

Multiple choice
  1. it supports the germination process

  2. plants consume it

  3. plants use it to make glucose

  4. it helps absorb more water

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chlorophyll absorbs light energy, which is then used in the light-dependent reactions of photosynthesis to drive the synthesis of glucose from carbon dioxide and water. This glucose serves as the primary food source and energy storage molecule for the plant.

Multiple choice
  1. stem

  2. roots

  3. cytoplasm

  4. chlorophyll

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Chlorophyll is the green pigment located within chloroplasts that absorbs light energy from the Sun to power photosynthesis. Other parts like the stem and roots do not contain chlorophyll in high enough concentrations to perform this primary role.

Multiple choice
  1. Photosynthesis

  2. Respiration

  3. DNA replication

  4. Proteins are formed

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The nucleus contains the cell's genetic material (DNA), making it the site for DNA replication and transcription. Photosynthesis occurs in chloroplasts, cellular respiration occurs primarily in mitochondria, and protein synthesis (translation) occurs on ribosomes in the cytoplasm.

Multiple choice
  1. Respiration

  2. Photosynthesis

  3. DNA replication

  4. Protein synthesis

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Chloroplasts contain chlorophyll, which absorbs sunlight to drive photosynthesis, converting carbon dioxide and water into glucose and oxygen. Respiration is performed by mitochondria, and protein synthesis is performed by ribosomes.

Multiple choice
  1. oxygen and water

  2. sugar and oxygen

  3. carbon dioxide and water

  4. sugar and carbon dioxide

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

During photosynthesis, plants use light energy to convert carbon dioxide and water into glucose (sugar) and oxygen. Glucose serves as the plant's food, while oxygen is released into the atmosphere as a byproduct.

Multiple choice
  1. oxygen and water

  2. sugar and oxygen

  3. carbon dioxide and water

  4. sugar and carbon dioxide

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Photosynthesis is the process by which plants make their own food. The raw materials required for this chemical reaction are carbon dioxide, which is absorbed from the air, and water, which is absorbed from the soil, in the presence of sunlight.

Multiple choice
  1. fermentation

  2. respiration

  3. photosynthesis

  4. exocytosis

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Photosynthesis is the biological process where autotrophs, like plants and algae, capture light energy from the sun and convert it into chemical energy in the form of food (glucose). Respiration and fermentation are processes used to break down food for energy, while exocytosis is a transport mechanism.