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Practice Class 7 Science Chapter 1 Nutrition in Plants MCQ Questions with Answers based on the latest NCERT syllabus. Solve important questions on photosynthesis, chloroplasts, heterotrophs, nutrients, and insectivorous plants with detailed solutions for CBSE, State Board, Olympiad, and scholarship exam preparation.
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Chapter Information
Subject: Science
Class: 7
Chapter: Nutrition in Plants
Question Type: Multiple Choice Questions (MCQs)
Difficulty Level: Moderate
Based On: NCERT Latest Syllabus (2026)
Introduction
Plants are known as producers because they prepare their own food through photosynthesis. However, some plants and organisms depend on other living organisms or dead organic matter for nutrition. This practice set focuses on important NCERT concepts, helping students strengthen their understanding through concept-based MCQs.
What You Will Learn
✔ Chloroplast and chlorophyll
✔ Heterotrophic nutrition
✔ Raw materials of photosynthesis
✔ Nitrogen deficiency
✔ Modes of nutrition
✔ Plant nutrition concepts
✔ NCERT exam-oriented questions
Why This Topic Is Important
This chapter develops the basic concepts of Biology that students will study in higher classes. Questions related to plant nutrition, photosynthesis, chloroplasts, and different modes of nutrition are frequently asked in school examinations, Olympiads, and scholarship tests.
1. MCQ Questions with Detailed Solutions
Q1. Chlorophyll is present inside which cell organelle?
A) Nucleus
B) Chloroplast
C) Vacuole
D) Mitochondria
Answer
B) Chloroplast
Concept Behind This Question
Chlorophyll is located inside chloroplasts, where photosynthesis takes place.
Step-by-Step Solution
Plant cells contain special organelles called chloroplasts.
Chlorophyll present inside chloroplasts absorbs sunlight required for photosynthesis.
Therefore, the correct answer is B.
Exam Tip
Chloroplast = Site of Photosynthesis
Q2. Plants that cannot prepare their own food are called:
A) Autotrophs
B) Producers
C) Heterotrophs
D) Green Plants
Answer
C) Heterotrophs
Concept Behind This Question
Heterotrophs depend on other organisms for food.
Step-by-Step Solution
Some plants such as Cuscuta cannot perform photosynthesis because they lack chlorophyll.
They obtain food from other organisms.
Hence, they are called heterotrophs.
Therefore, the correct answer is C.
Exam Tip
Heterotroph = Depends on others for food
Q3. Which of the following is not a raw material required for photosynthesis?
A) Water
B) Carbon Dioxide
C) Sunlight
D) Nitrogen
Answer
D) Nitrogen
Concept Behind This Question
Nitrogen is essential for plant growth but is not directly used as a raw material in photosynthesis.
Step-by-Step Solution
Photosynthesis requires:
- Carbon dioxide
- Water
- Sunlight
- Chlorophyll
Nitrogen helps in plant growth but is not directly involved in preparing food.
Hence, the correct answer is D.
Exam Tip
Raw Materials: Water + Carbon Dioxide
Essential Conditions: Sunlight + Chlorophyll
Q4. Insectivorous plants mainly grow in soil that is deficient in:
A) Oxygen
B) Nitrogen
C) Water
D) Carbon Dioxide
Answer
B) Nitrogen
Concept Behind This Question
These plants trap insects because the soil lacks sufficient nitrogen.
Step-by-Step Solution
Nitrogen is essential for protein synthesis.
When the soil is poor in nitrogen, insectivorous plants digest insects to obtain this nutrient.
Therefore, the correct answer is B.
Exam Tip
Nitrogen-deficient soil → Insectivorous plants
Q5. Which process converts light energy into chemical energy in plants?
A) Respiration
B) Photosynthesis
C) Transpiration
D) Germination
Answer
B) Photosynthesis
Concept Behind This Question
Photosynthesis stores solar energy as chemical energy in glucose.
Step-by-Step Solution
Plants capture sunlight using chlorophyll.
The energy is used to prepare glucose, which stores energy in chemical form.
Thus, photosynthesis converts light energy into chemical energy.
Therefore, the correct answer is B.
Exam Tip
Photosynthesis = Light Energy → Chemical Energy
Important Formulas & Concepts
1. Chloroplast
The organelle where photosynthesis takes place.
2. Heterotrophs
Organisms that depend on others for food.
Example: Cuscuta
3. Raw Materials of Photosynthesis
- Carbon Dioxide
- Water
4. Essential Conditions for Photosynthesis
- Sunlight
- Chlorophyll
5. Energy Conversion
Light Energy → Chemical Energy (Glucose)
Related Practice Questions
- What is the function of chloroplast?
- Define heterotrophic nutrition.
- Which materials are directly used in photosynthesis?
- Why do insectivorous plants digest insects?
- How is light energy converted into chemical energy?
Mini Quiz Challenge
Fill in the blanks
- Photosynthesis takes place inside the __________.
- Cuscuta is a __________ plant.
- Photosynthesis converts light energy into __________ energy.
Answers
- Chloroplast
- Heterotrophic
- Chemical
Exam Tips
✔ Learn the difference between chlorophyll and chloroplast.
✔ Remember examples of heterotrophs.
✔ Revise raw materials and conditions of photosynthesis.
✔ Understand why insectivorous plants trap insects.
✔ Practice conceptual NCERT questions.
Quick Revision Notes
✔ Chloroplast is the site of photosynthesis.
✔ Chlorophyll is present inside chloroplasts.
✔ Heterotrophs depend on others for food.
✔ Nitrogen is needed for growth but not as a raw material in photosynthesis.
✔ Photosynthesis stores solar energy as chemical energy.
✔ Insectivorous plants grow in nitrogen-poor soil.
✔ Cuscuta is a parasitic heterotroph.
Common Mistakes Students Make
❌ Confusing chlorophyll with chloroplast.
❌ Thinking nitrogen is a raw material for photosynthesis.
❌ Mixing autotrophs and heterotrophs.
❌ Assuming photosynthesis and respiration are the same process.
❌ Forgetting the energy conversion during photosynthesis.
Key Takeaways
✔ Chloroplast is the site of photosynthesis.
✔ Chlorophyll absorbs sunlight.
✔ Heterotrophs depend on other organisms.
✔ Nitrogen is essential for growth but not a raw material in photosynthesis.
✔ Photosynthesis converts light energy into chemical energy.
✔ Insectivorous plants obtain nitrogen from insects.
FAQs
1. What is a chloroplast?
A chloroplast is the cell organelle where photosynthesis takes place.
2. What is the difference between chlorophyll and chloroplast?
Chlorophyll is the green pigment, while chloroplast is the organelle that contains chlorophyll.
3. What are heterotrophs?
Heterotrophs are organisms that depend on other organisms for food.
4. Why do insectivorous plants trap insects?
They trap insects to obtain nitrogen because they grow in nitrogen-deficient soil.
5. What type of energy is stored in glucose?
Glucose stores chemical energy.
Conclusion
The concepts of chloroplasts, heterotrophic nutrition, and energy conversion during photosynthesis are fundamental to understanding plant nutrition. Mastering these NCERT concepts through regular MCQ practice helps students perform better in school exams, Olympiads, and scholarship tests.
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