Here are 10 One-Word Answer Type Questions from the chapter “Nutrition in Plants” (Class 7 NCERT Science), along with answers and explanations included right after each question, as you requested:
One-Word Answer Questions (Nutrition in Plants)
1. Question: What is the mode of nutrition in green plants?
• Answer: Autotrophic
• Explanation: Green plants prepare their own food using sunlight, carbon dioxide, and water through the process of photosynthesis. This mode of nutrition is called autotrophic nutrition.
2. Question: Which pigment is responsible for photosynthesis?
• Answer: Chlorophyll
• Explanation: Chlorophyll is the green pigment present in leaves that captures solar energy required for photosynthesis.
3. Question: Which gas is taken in by plants during photosynthesis?
• Answer: Carbon dioxide
• Explanation: Plants absorb carbon dioxide from the air through tiny pores on their leaves called stomata and use it in the process of photosynthesis.
4. Question: What is the stored form of food in plants?
• Answer: Starch
• Explanation: The carbohydrates produced in photosynthesis are stored in plants in the form of starch.
5. Question: Name the plant that is a parasite.
• Answer: Cuscuta
• Explanation: Cuscuta (Amarbel) is a parasitic plant that lacks chlorophyll and derives nutrition from the host plant.
6. Question: What are the tiny pores present on the surface of leaves called?
• Answer: Stomata
• Explanation: Stomata are small openings on the leaf surface surrounded by guard cells, through which gases like carbon dioxide enter and oxygen exits.
7. Question: Which process in plants releases oxygen?
• Answer: Photosynthesis
• Explanation: During photosynthesis, plants release oxygen as a byproduct while synthesising food.
8. Question: What type of nutrition is shown by mushrooms?
• Answer: Saprotrophic
• Explanation: Mushrooms obtain nutrition from dead and decaying organic matter. This mode is called saprotrophic nutrition.
9. Question: Which bacteria help in nitrogen fixation in leguminous plants?
• Answer: Rhizobium
• Explanation: Rhizobium bacteria live in the root nodules of leguminous plants and help in converting atmospheric nitrogen into a usable form.
10. Question: What is the name of the association between fungi and algae?
• Answer: Lichen
• Explanation: Lichen is a symbiotic relationship where fungi and algae live together. The fungus provides shelter and minerals while the alga prepares food through photosynthesis.
If you want, I can also format these questions in a worksheet-friendly layout (with space for students to write answers) or prepare MCQs and fill in the blanks from this chapter.
Shall I do that?
