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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, chlorophyll, nutrients, parasites, and saprotrophs with detailed solutions for school exams and Olympiad preparation.
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Chapter Information
Subject: Science
Class: 7
Chapter: Nutrition in Plants
Question Type: Multiple Choice Questions (MCQs)
Difficulty Level: Easy to Moderate
Based On: NCERT Latest Syllabus (2026)
Introduction
Plants are unique living organisms because they prepare their own food through the process of photosynthesis. This chapter introduces students to different modes of nutrition in plants, the importance of chlorophyll, and various plant types such as parasites, saprotrophs, and insectivorous plants. Understanding these concepts helps students build a strong foundation in Biology.
What You Will Learn
✔ Photosynthesis and its importance
✔ Raw materials required for photosynthesis
✔ Role of chlorophyll
✔ Types of nutrition in plants
✔ Parasitic and saprotrophic plants
✔ Insectivorous plants
✔ Importance of sunlight for food preparation
Why This Topic Is Important
Nutrition in Plants is the first Biology chapter of Class 7 Science and forms the basis for understanding food chains, ecosystems, plant growth, and energy transfer in nature. Questions from this chapter are frequently asked in school exams, Olympiads, scholarship tests, and competitive examinations.
1. MCQ Questions with Detailed Solutions
Q1. Which process helps green plants prepare their own food?
A) Respiration
B) Photosynthesis
C) Digestion
D) Germination
Answer
B) Photosynthesis
Concept Behind This Question
Green plants use sunlight to prepare food from carbon dioxide and water.
Step-by-Step Solution
Plants contain chlorophyll, a green pigment that traps sunlight.
Using sunlight, carbon dioxide, and water, plants prepare glucose.
This process is called photosynthesis.
Therefore, the correct answer is B.
Exam Tip
Remember:
Photosynthesis = Food making process in plants.
Q2. Which gas is absorbed by plants during photosynthesis?
A) Oxygen
B) Nitrogen
C) Carbon Dioxide
D) Hydrogen
Answer
C) Carbon Dioxide
Concept Behind This Question
Plants require carbon dioxide from the atmosphere to prepare food.
Step-by-Step Solution
During photosynthesis,
Plants absorb carbon dioxide through tiny pores called stomata.
Water comes from roots.
Sunlight provides energy.
Food is prepared.
Hence the correct answer is Carbon Dioxide.
Exam Tip
Plants absorb CO₂ and release O₂ during photosynthesis.
Q3. Which pigment gives leaves their green colour?
A) Hemoglobin
B) Melanin
C) Chlorophyll
D) Carotene
Answer
C) Chlorophyll
Concept Behind This Question
Chlorophyll absorbs sunlight needed for photosynthesis.
Step-by-Step Solution
Leaves appear green because they contain chlorophyll.
Without chlorophyll, photosynthesis cannot occur efficiently.
Therefore, the correct answer is C.
Exam Tip
Chlorophyll = Green pigment + Sunlight absorber
Q4. Which of the following is a parasitic plant?
A) Mango
B) Rose
C) Cuscuta
D) Neem
Answer
C) Cuscuta
Concept Behind This Question
Parasitic plants obtain food from other living plants.
Step-by-Step Solution
Cuscuta lacks chlorophyll.
It cannot prepare its own food.
It depends on host plants for nutrition.
Hence, it is a parasite.
Exam Tip
Cuscuta = Parasitic plant
Q5. Which of the following is an insectivorous plant?
A) Banyan
B) Pitcher Plant
C) Wheat
D) Mustard
Answer
B) Pitcher Plant
Concept Behind This Question
Some plants trap insects to obtain nutrients, especially nitrogen.
Step-by-Step Solution
Pitcher plants grow in nitrogen-deficient soil.
They trap insects inside their pitcher-shaped leaves.
The insects are digested to obtain nutrients.
Therefore, the correct answer is B.
Exam Tip
Remember examples:
Pitcher Plant and Venus Flytrap are insectivorous plants.
Important Formulas & Concepts
1. Photosynthesis
Plants prepare food using sunlight, chlorophyll, carbon dioxide, and water.
2. Raw Materials for Photosynthesis
- Carbon Dioxide
- Water
- Sunlight
- Chlorophyll
3. Chlorophyll
Green pigment that absorbs sunlight.
4. Parasitic Plants
Plants that depend on other living plants for food.
Example: Cuscuta
5. Saprotrophs
Organisms that obtain nutrients from dead and decaying matter.
Examples:
- Mushroom
- Bread mould
Related Practice Questions
- What is photosynthesis?
- Why is chlorophyll important?
- Name one parasitic plant.
- What are saprotrophs?
- Why do insectivorous plants trap insects?
Mini Quiz Challenge
Fill in the blanks
- Plants prepare food by __________.
- Green pigment in leaves is called __________.
- Cuscuta is a __________ plant.
Answers
- Photosynthesis
- Chlorophyll
- Parasitic
Exam Tips
✔ Learn the photosynthesis process carefully.
✔ Remember examples of parasitic and insectivorous plants.
✔ Practice NCERT back exercises.
✔ Revise important definitions regularly.
✔ Understand concepts instead of memorizing them.
Quick Revision Notes
✔ Plants prepare their own food.
✔ Photosynthesis requires sunlight.
✔ Chlorophyll traps solar energy.
✔ Carbon dioxide is absorbed from air.
✔ Cuscuta is a parasite.
✔ Mushroom is a saprotroph.
✔ Pitcher Plant is insectivorous.
Common Mistakes Students Make
❌ Confusing respiration with photosynthesis.
❌ Thinking plants absorb oxygen for photosynthesis.
❌ Forgetting the role of chlorophyll.
❌ Confusing parasites with saprotrophs.
❌ Assuming all plants prepare their own food.
Key Takeaways
✔ Photosynthesis is the food-making process in plants.
✔ Chlorophyll absorbs sunlight.
✔ Plants require carbon dioxide and water to prepare food.
✔ Cuscuta is a parasitic plant.
✔ Pitcher Plant traps insects for nutrients.
✔ Saprotrophs feed on dead and decaying matter.
FAQs
1. What is photosynthesis?
Photosynthesis is the process by which green plants prepare their own food using sunlight, carbon dioxide, and water.
2. What is chlorophyll?
Chlorophyll is the green pigment present in leaves that absorbs sunlight.
3. Name one parasitic plant.
Cuscuta is a parasitic plant.
4. What are saprotrophs?
Saprotrophs obtain food from dead and decaying organic matter.
5. Why do insectivorous plants eat insects?
They obtain nitrogen and other nutrients from insects because they grow in nutrient-poor soil.
Conclusion
Nutrition in Plants introduces students to the fascinating way plants make their own food and survive in different environments. By understanding photosynthesis, chlorophyll, and different modes of nutrition, students develop a strong foundation for future Biology chapters. Practising these MCQs regularly will improve conceptual understanding and exam confidence.
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