Class 7 Science Chapter 10: Life Processes in Plants — practice questions with answers
Free practice for Class 7 Science, Chapter 10: Life Processes in Plants. Try the solved questions below, then take a free test with instant marking and explanations.
27 questions6 easy, 15 medium, 6 hardNCERT · CBSE · State boards
Sample questions with solutions
Q1. Pot A is in sunlight with water, B in sunlight without water, C in the dark with water. Which plant grows best?
- Pot A
- Pot B
- Pot C
- All equally
Show answer
Answer: A. Pot A
Why: Activity 10.1 shows water and sunlight are essential for plant growth. [p.138–139, p.141]
Why: Activity 10.1 shows water and sunlight are essential for plant growth. [p.138–139, p.141]
Q2. Why are leaves called the ‘food factories’ of plants?
- Food (starch) is prepared in their green parts
- They store all the water
- They absorb minerals
- They attract insects
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Answer: A. Food (starch) is prepared in their green parts
Why: Chlorophyll in leaves helps prepare starch. [p.143]
Why: Chlorophyll in leaves helps prepare starch. [p.143]
Q3. A water plant in sunlight gives off bubbles that collect in an inverted test tube. Which gas is it?
- Oxygen
- Carbon dioxide
- Nitrogen
- Hydrogen
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Answer: A. Oxygen
Why: Oxygen is released during photosynthesis. [p.145]
Why: Oxygen is released during photosynthesis. [p.145]
Q4. What is needed for photosynthesis? (Tick all that apply)
- Sunlight
- Water
- Carbon dioxide
- Chlorophyll
- Oxygen
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Answer: A. Sunlight; B. Water; C. Carbon dioxide; D. Chlorophyll
Why: Oxygen is produced, not used, in photosynthesis. [p.146]
Why: Oxygen is produced, not used, in photosynthesis. [p.146]
Q5. Tiny pores on the surface of leaves that help in gas exchange are called ______.
Show answer
Answer: stomata
Why: Stomata help exchange oxygen and carbon dioxide. [p.147, p.150]
Why: Stomata help exchange oxygen and carbon dioxide. [p.147, p.150]
Q6. Krishna places one plant in sunlight and one in the dark. Which plant’s leaves will test positive for starch?
- The plant in sunlight
- The plant in the dark
- Both
- Neither
Show answer
Answer: A. The plant in sunlight
Why: Starch is made only in the presence of sunlight. [p.151]
Why: Starch is made only in the presence of sunlight. [p.151]
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Frequently asked questions
How many practice questions are there for Class 7 Science Chapter 10: Life Processes in Plants?
27 questions (6 easy, 15 medium, 6 hard). A few are solved on this page; the free test shows the answer and explanation for every question after you submit.
Is this chapter from the NCERT book?
Yes — it follows the NCERT Class 7 Science syllabus, used by CBSE and many state boards.