Listen to an academic talk

 



 

 

Questions

1. What is the main topic?

A. Plant respiration
B. Photosynthesis 
C. Energy consumption
D. Soil nutrients

 

2. Which substances are converted into glucose?
A. Oxygen and water
B. Carbon dioxide and water 
C. Glucose and sunlight
D. Carbon dioxide and oxygen

 

3. Why is photosynthesis important?
A. Provides oxygen and energy for life 
B. Helps animals breathe only
C. Produces soil nutrients
D. Controls weather

 

4. What can be inferred about studying photosynthesis?
A. It is irrelevant for agriculture
B. Helps improve crop productivity 
C. Only affects animals
D. Cannot be influenced by environmental factors

 

 

Academic talk text

Photosynthesis is the process by which plants convert sunlight into chemical energy. Plants use chlorophyll in their leaves to capture light, which powers the conversion of carbon dioxide and water into glucose and oxygen.

This process is fundamental to life on Earth because it provides the energy that fuels plant growth and, indirectly, the entire food chain. Without photosynthesis, animals, including humans, would not have a reliable source of food or oxygen.

Environmental factors such as light intensity, water availability, and carbon dioxide levels can influence the rate of photosynthesis. Studying these factors helps scientists understand plant productivity and can improve agricultural practices.

 

 

1. Answer: B

Explanation: The talk explains how plants make energy from sunlight.

2. Answer: B

Explanation: Photosynthesis converts CO₂ and water into glucose.

3. Answer: C

Explanation: Photosynthesis supports life by producing food and oxygen.

4. Answer: B

Explanation: Understanding environmental effects on photosynthesis can optimize agriculture.