Trees take in carbon dioxide from the atmosphere and use it in the process of photosynthesis to produce oxygen.

How do trees make oxygen?

Related MCQ’s

1. What is the process called through which trees produce oxygen?

A) Respiration
B) Photosynthesis
C) Fermentation
D) Decomposition

 Answer: B) Photosynthesis

Explanation: Photosynthesis is the process by which trees (and other plants) use sunlight to synthesize foods from carbon dioxide and water, producing oxygen as a byproduct.

 

2. Which part of the tree plays a crucial role in the production of oxygen?

A) Roots
B) Trunk
C) Leaves
D) Bark

Answer: C) Leaves

Explanation: Leaves are the primary site of photosynthesis in trees where carbon dioxide is converted into oxygen.

 

3. What is essential for trees to carry out photosynthesis?

A) Darkness
B) Soil nutrients
C) Sunlight
D) Insects

Answer: C) Sunlight

Explanation: Sunlight is a crucial component for photosynthesis, providing the energy needed for trees to convert carbon dioxide into oxygen.

 

4. During photosynthesis, trees split which molecule to produce oxygen?

A) Carbon dioxide
B) Water
C) Oxygen
D) Glucose

Answer: B) Water

Explanation: In the process of photosynthesis, trees split water molecules to obtain electrons, which are then used to convert carbon dioxide into glucose, releasing oxygen in the process.

 

5. What role does oxygen play in the process of photosynthesis?

A) It is used to break down glucose.
B) It acts as a primary fuel source.
C) It is a byproduct.
D) It helps absorb sunlight.

Answer: C) It is a byproduct

Explanation: Oxygen is not directly used in the photosynthesis process itself but is rather a byproduct of the conversion of carbon dioxide and water into glucose and oxygen.

 

Fill In The Blanks

Choose From These Words: carbon dioxide, photosynthesis, food, oxygen, sunlight

1. Trees make oxygen through a process called ___________.

Answer: photosynthesis

2. Trees absorb ___________ from the air and water from the ground.

Answer: carbon dioxide

3. Trees convert carbon dioxide and water into ___________ and glucose.

Answer: oxygen

4. The energy source for photosynthesis in trees is ___________.

Answer: sunlight

5. The glucose produced during photosynthesis is used as ___________ for the tree.

Answer: food

 

True/False Questions:

1. Trees make oxygen by breathing in carbon dioxide. (True/False)

Answer: True.

Explanation: Trees absorb carbon dioxide through their leaves and use it during photosynthesis to produce oxygen.

2. Trees make oxygen during a process called respiration. (True/False)

Answer: False.

Explanation: Trees produce oxygen through photosynthesis, not respiration. Respiration is the process by which trees and other living organisms use oxygen to break down glucose for energy.

3. Trees release oxygen into the air for us to breathe. (True/False)

Answer: True.

Explanation: The oxygen produced by trees through photosynthesis is released into the air, providing us with the oxygen we need to survive.

4. Trees make oxygen by using sunlight, carbon dioxide, and water. (True/False)

Answer: True.

Explanation: Trees use sunlight, carbon dioxide, and water during photosynthesis to produce oxygen and glucose.

5. Trees do not play a role in producing oxygen for the environment. (True/False)

Answer: False.

Explanation: Trees are essential for producing oxygen through photosynthesis, which is crucial for maintaining the balance of oxygen in the atmosphere.

 

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