Class 7 Science Chapter 1 Nutrition in Plants

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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 carbohydrates, legumes, chlorophyll, photosynthesis, and plant nutrition 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 require sunlight, water, minerals, and carbon dioxide to prepare food. Along with photosynthesis, plants also need nutrients such as nitrogen, phosphorus, and potassium for healthy growth. This practice set covers additional NCERT concepts that help students strengthen their understanding of plant nutrition.

What You Will Learn

✔ Products of photosynthesis

✔ Importance of carbohydrates

✔ Leguminous plants

✔ Essential nutrients for plants

✔ Role of chlorophyll

✔ Photosynthesis in green leaves

✔ NCERT-based concepts for exams

Why This Topic Is Important

The chapter Nutrition in Plants explains how plants obtain food and nutrients for survival. It builds the foundation for advanced Biology chapters and is frequently asked in school exams, Olympiads, NTSE, and scholarship tests.

1. MCQ Questions with Detailed Solutions

Q1. Which food substance is mainly prepared by plants during photosynthesis?

A) Carbohydrates

B) Proteins

C) Fats

D) Vitamins

Answer

A) Carbohydrates

Concept Behind This Question

Glucose produced during photosynthesis belongs to the carbohydrate group.

Step-by-Step Solution

During photosynthesis, plants prepare glucose.

Glucose is a simple carbohydrate and serves as the primary source of energy.

Therefore, the correct answer is A.

Exam Tip

Glucose is a carbohydrate prepared during photosynthesis.

Q2. Which gas is released into the atmosphere during photosynthesis?

A) Nitrogen

B) Carbon Dioxide

C) Oxygen

D) Hydrogen

Answer

C) Oxygen

Concept Behind This Question

Photosynthesis releases oxygen as a by-product.

Step-by-Step Solution

During photosynthesis:

• Carbon dioxide is absorbed.
• Oxygen is released.

This oxygen is essential for the survival of living organisms.

Hence, the correct answer is C.

Exam Tip

Plants absorb CO₂ and release O₂ during photosynthesis.

Q3. Which of the following is a leguminous plant?

A) Pea

B) Mango

C) Coconut

D) Sunflower

Answer

A) Pea

Concept Behind This Question

Leguminous plants contain root nodules with Rhizobium bacteria.

Step-by-Step Solution

Examples of leguminous plants include:

• Pea
• Gram
• Bean
• Soybean

These plants improve soil fertility by fixing atmospheric nitrogen.

Therefore, the correct answer is A.

Exam Tip

Pea and gram are common examples of leguminous plants.

Q4. Which mineral nutrient is required in the largest quantity for healthy plant growth?

A) Nitrogen

B) Gold

C) Silver

D) Mercury

Answer

A) Nitrogen

Concept Behind This Question

Nitrogen is one of the major nutrients needed for plant growth.

Step-by-Step Solution

Plants require nitrogen for:

• Leaf growth
• Protein formation
• Healthy development

Gold, silver, and mercury are not essential nutrients for plants.

Therefore, the correct answer is A.

Exam Tip

Remember the major nutrients:

Nitrogen (N), Phosphorus (P), Potassium (K)

Q5. Photosynthesis mainly takes place in which part of the plant?

A) Roots

B) Flowers

C) Green Leaves

D) Fruits

Answer

C) Green Leaves

Concept Behind This Question

Leaves contain chlorophyll, which captures sunlight.

Step-by-Step Solution

Green leaves contain numerous chlorophyll-containing cells.

These cells perform photosynthesis efficiently.

Therefore, the correct answer is C.

Exam Tip

Leaves are called the “food factories” of plants.

Important Formulas & Concepts

1. Photosynthesis Produces

• Glucose (Carbohydrate)
• Oxygen

2. Major Plant Nutrients

• Nitrogen (N)
• Phosphorus (P)
• Potassium (K)

3. Leguminous Plants

Plants with root nodules containing Rhizobium bacteria.

Examples:

• Pea
• Gram
• Bean
• Soybean

4. Food Factory of Plants

Green leaves prepare food through photosynthesis.

5. Oxygen Release

Oxygen is released as a by-product of photosynthesis.

Related Practice Questions

1. Why are green leaves called food factories?
2. Name three major nutrients required by plants.
3. Give two examples of leguminous plants.
4. Why is oxygen released during photosynthesis?
5. Which food substance is produced during photosynthesis?

Mini Quiz Challenge

Fill in the blanks

1. Green leaves are called the __________ of plants.
2. Pea is a __________ plant.
3. Plants release __________ during photosynthesis.

Answers

1. Food factories
2. Leguminous
3. Oxygen

Exam Tips

✔ Remember the major nutrients (NPK).

✔ Learn examples of leguminous plants.

✔ Revise products of photosynthesis.

✔ Practice all NCERT activities.

✔ Read important diagrams from the textbook.

Quick Revision Notes

✔ Glucose is a carbohydrate.

✔ Oxygen is released during photosynthesis.

✔ Pea is a leguminous plant.

✔ Nitrogen is essential for plant growth.

✔ Leaves are the main site of photosynthesis.

✔ Rhizobium improves soil fertility.

✔ Green leaves contain chlorophyll.

Common Mistakes Students Make

❌ Thinking roots perform photosynthesis.

❌ Confusing products and raw materials of photosynthesis.

❌ Forgetting examples of leguminous plants.

❌ Assuming all nutrients come from sunlight.

❌ Ignoring the importance of nitrogen.

Key Takeaways

✔ Photosynthesis produces glucose and oxygen.

✔ Green leaves are the food factories of plants.

✔ Nitrogen is an essential nutrient.

✔ Leguminous plants improve soil fertility.

✔ Rhizobium bacteria live in root nodules.

✔ Chlorophyll is necessary for photosynthesis.

FAQs

1. Why are leaves called food factories?

Because they prepare food through photosynthesis.

2. What is the main food prepared by plants?

Glucose, which is a carbohydrate.

3. Name two leguminous plants.

Pea and gram.

4. Which gas is released during photosynthesis?

Oxygen.

5. Which nutrient is essential for healthy leaf growth?

Nitrogen.

Conclusion

Plants depend on photosynthesis to prepare carbohydrates and release oxygen into the atmosphere. Nutrients such as nitrogen and the role of leguminous plants are equally important for healthy plant growth. Regular practice of NCERT-based MCQs strengthens conceptual understanding and improves performance in school exams and competitive tests.

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