๐ Class 7 Science Curiosity – Chapter 10 Solutions
๐ฟ Life Processes in Plants | Amresh Academy
✍️ ๐น Very Short Answer Type Questions
What is photosynthesis?
๐ Answer:
๐ Photosynthesis is the process by which plants prepare food using sunlight, carbon dioxide, water and chlorophyll
➡️ Produces glucose ๐ฌ and oxygen ๐ฌ️
Which part of the plant performs photosynthesis?
๐ Answer:
๐ Leaves are the main site of photosynthesis
What are stomata?
๐ Answer:
๐ฌ Tiny pores on leaves
➡️ Help in gas exchange (CO₂ in, O₂ out)
Which gas is released during photosynthesis?
๐ Answer:
๐ฌ️ Oxygen (O₂)
What are the two transport tissues in plants?
๐ Answer:
๐ฟ Xylem and Phloem
๐ง ๐น Short Answer Type Questions
What role does chlorophyll play in photosynthesis?
๐ Answer:
๐ข Chlorophyll absorbs sunlight ๐
➡️ Helps convert CO₂ + water into glucose + oxygen
Why is the iodine test done in leaves?
๐ Answer:
๐งช To check presence of starch
➡️ Confirms photosynthesis
What does the phloem transport in plants?
๐ Answer:
๐ฌ Transports food from leaves to other parts
What is the function of the xylem?
๐ Answer:
๐ง Transports water & minerals from roots
Why is carbon dioxide important for photosynthesis?
๐ Answer:
๐ซ️ CO₂ is a raw material needed for food formation
๐ ๐น Descriptive Answer Type Questions
How do plants use the glucose produced during photosynthesis?
๐ Answer:
⚡ Provides energy
๐ฌ Extra stored as starch
➡️ Stored in roots, stems, fruits
Explain the process of water transport in plants.
๐ Answer:
๐ง Roots absorb water
➡️ Xylem carries it to leaves
➡️ Supports photosynthesis
Describe an activity to show the release of oxygen during photosynthesis.
๐ Answer:
๐ฟ Water plant in sunlight
๐ซง Bubbles collected in tube
➡️ Shows oxygen release
What happens when a plant is kept in the dark for 36 hours?
๐ Answer:
๐ No photosynthesis
➡️ No starch formed
➡️ Iodine test negative
How does temperature affect photosynthesis?
๐ Answer:
๐ก️
- Low temp → slow
- High temp → stops
- Moderate → best
๐ ๐น Exploring Questions
Why is photosynthesis essential for all living beings?
๐ Answer:
๐ Provides food ๐ฌ & oxygen ๐ฌ️
➡️ Base of food chain
How does the design of leaves help in photosynthesis?
๐ Answer:
๐ Broad & flat → absorbs sunlight
๐ฌ Many stomata → gas exchange
What would happen if all photosynthetic organisms disappeared?
๐ Answer:
❌ No oxygen
❌ No food
➡️ Life on Earth ends
How do plants balance oxygen and carbon dioxide in the environment?
๐ Answer:
๐ Photosynthesis → CO₂ in, O₂ out
๐ Respiration → O₂ in, CO₂ out
Why is respiration in plants important despite photosynthesis?
๐ Answer:
⚡ Respiration releases energy
➡️ Needed for growth & survival
