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CBSE Class 7 Science Chapter 1 Nutrition in Plants Worksheet with Answers

Nutrition in Plants is the opening chapter of CBSE Class 7 Science and introduces students to how living organisms obtain food. This printable worksheet has been carefully designed to help students practice every concept from autotrophic and heterotrophic nutrition to photosynthesis and symbiotic relationships. Difficulty level is Medium and students should aim to complete it in 60 minutes under exam-like conditions for maximum benefit.

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Key takeaways

✓Complete worksheet aligned with NCERT Class 7 Science Chapter 1 on Nutrition in Plants with difficulty level marked as Medium
✓Suggested completion time is 60 minutes for thorough practice and revision
✓Covers autotrophic nutrition, photosynthesis process, chlorophyll function, stomata, and heterotrophic modes comprehensively
✓Includes 6 MCQs, 5 fill-in-the-blanks, match-the-following, 5 short-answer questions, 3 long-answer questions, and 1 case study
✓Detailed answer key with explanations helps students self-assess and correct conceptual gaps immediately
✓Perfect for pre-exam revision, homework assignment, or weekend practice to strengthen biology fundamentals

Quick Chapter Recap: Nutrition in Plants

Before attempting the worksheet, revisit these core concepts from NCERT Class 7 Science Chapter 1. Nutrition is the process by which organisms obtain and utilize food for growth, energy, and repair. Plants are primarily autotrophs—they synthesize their own food through photosynthesis using sunlight, carbon dioxide, water, and chlorophyll in the presence of light. The process occurs mainly in leaves, with chlorophyll trapping light energy and converting it into chemical energy stored in glucose. Stomata are tiny pores on the leaf surface that allow gas exchange—carbon dioxide enters and oxygen exits during photosynthesis. Heterotrophic nutrition occurs in organisms that cannot make their own food and depend on others. Three heterotrophic modes include saprotrophic nutrition (organisms like fungi feeding on dead organic matter), parasitic nutrition (organisms like Cuscuta deriving nutrition from a living host), and symbiotic relationships (like lichens where algae and fungi live together benefiting both). Insectivorous plants such as pitcher plant and Venus flytrap obtain nitrogen from insects because they grow in nitrogen-deficient soils. Understanding these terms is essential for answering the worksheet correctly and performing well in CBSE examinations.

Autotrophic nutrition: Self-synthesis of food using simple inorganic substances (CO₂, H₂O, minerals)
Photosynthesis equation: 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂ (in the presence of sunlight and chlorophyll)
Heterotrophic modes: Saprotrophic (fungi), parasitic (Cuscuta, lice), symbiotic (lichen, Rhizobium)
Chlorophyll: Green pigment in chloroplasts that absorbs light energy for photosynthesis
Stomata: Tiny openings on leaf surfaces regulated by guard cells for gas exchange

Section A: Multiple Choice Questions (MCQs)

This section tests your foundational knowledge with six carefully selected MCQs covering autotrophic nutrition, photosynthesis, heterotrophic modes, and plant structures involved in nutrition. Each question has four options; choose the most appropriate answer. These MCQs mirror the pattern seen in CBSE Class 7 Science term exams and help reinforce recall of key facts and definitions from NCERT Class 7 Science Chapter 1. Attempt all questions and then verify your answers in the answer key section provided at the end of this worksheet. Make sure you understand why the correct answer is right and why the distractors are incorrect—this deepens conceptual clarity and prepares you for objective-type assessments in school examinations.

Q1. The mode of nutrition in which organisms make food themselves from simple substances is called: (a) Autotrophic (b) Heterotrophic (c) Saprotrophic (d) Parasitic
Q2. Which of the following is essential for photosynthesis to occur? (a) Oxygen (b) Chlorophyll (c) Nitrogen (d) Calcium
Q3. Cuscuta is an example of: (a) Autotroph (b) Saprotroph (c) Parasite (d) Insectivorous plant
Q4. Stomata are present on: (a) Roots (b) Stems (c) Leaves (d) Flowers
Q5. The process by which green plants prepare their food is: (a) Respiration (b) Photosynthesis (c) Transpiration (d) Digestion
Q6. Pitcher plant traps insects because: (a) It does not have chlorophyll (b) Soil is deficient in nitrogen (c) It cannot perform photosynthesis (d) It grows in dark places

Section B: Fill in the Blanks

Complete each statement by filling in the missing word or phrase. This exercise tests your ability to recall precise terminology and definitions from the NCERT Class 7 Science textbook. Pay close attention to spelling and the exact terms used in the chapter, as CBSE marking schemes award marks only for accurate answers. Fill-in-the-blank questions are commonly featured in CBSE Class 7 Science exams and help consolidate memory of important facts such as the role of chlorophyll, parts of the leaf involved in photosynthesis, types of nutrition, and examples of different organisms. After completing, cross-check your answers with the answer key and make notes of any terms you found difficult to remember for focused revision later.

Q1. Green plants are called __________ because they synthesize their own food.
Q2. The green pigment present in leaves that captures sunlight is called __________.
Q3. The tiny pores on the surface of leaves through which exchange of gases occurs are called __________.
Q4. Fungi derive nutrition from dead and decaying matter and are called __________.
Q5. The relationship in which two organisms live together and both benefit from each other is called __________.

Section C: Match the Following

Match the items in Column A with the correct descriptions or examples in Column B. This format assesses your ability to connect concepts, organisms, and processes correctly. Matching exercises enhance understanding of relationships between different modes of nutrition, specific organisms, and their nutritional strategies. Write the correct pairs (e.g., 1-d, 2-a) in your answer sheet. CBSE Class 7 Science exams frequently include such questions to test comprehensive understanding beyond rote memorization. Ensure you carefully read each item in both columns before making your matches to avoid careless errors. After finishing, verify your answers against the detailed answer key provided at the end to confirm your conceptual accuracy and clarify any misunderstandings immediately.

Column A: 1. Autotroph 2. Parasite 3. Saprotroph 4. Symbiosis 5. Insectivorous plant
Column B: (a) Cuscuta (b) Green plants (c) Lichen (d) Mushroom (e) Pitcher plant

Section D: Short Answer Questions (2–3 Marks Each)

Answer the following questions briefly in two to three sentences each. These short-answer questions require you to explain concepts clearly and concisely, reflecting the depth of your understanding of NCERT Class 7 Science Chapter 1. CBSE examiners look for accurate use of scientific terminology, logical flow of ideas, and completeness in short answers. Practice writing within word limits to develop precision—a vital exam skill. Topics covered include the definition of nutrition, photosynthesis as a process, the role of stomata, differences between autotrophs and heterotrophs, and examples of parasitic plants. Use diagrams or labeled sketches where applicable to earn bonus marks in CBSE assessments. Cross-verify your answers with the detailed solutions in the answer key section to identify improvement areas and strengthen your answering technique for board-style questions.

Q1. Define nutrition. Why is it important for living organisms?
Q2. What is photosynthesis? Write the word equation for photosynthesis.
Q3. What are stomata? Mention their function in photosynthesis.
Q4. Differentiate between autotrophic and heterotrophic nutrition with one example each.
Q5. Why are some plants called insectivorous plants? Give one example.

Section E: Long Answer and HOTS Questions (5 Marks Each)

These questions require detailed explanations, critical thinking, and the ability to apply concepts from NCERT Class 7 Science Chapter 1 to real-world scenarios or novel situations. Higher Order Thinking Skills (HOTS) questions test analytical reasoning, synthesis of ideas, and evaluation—a key component of the CBSE curriculum framework. Aim to write five to seven well-structured sentences per answer, using scientific vocabulary accurately and supporting your points with examples or reasoning. Questions in this section explore the complete process of photosynthesis, adaptations in insectivorous plants, the significance of symbiotic relationships, and the role of different modes of nutrition in ecosystem balance. CBSE rewards logical presentation, depth of knowledge, and originality in thought. After attempting, compare your answers with the model solutions in the answer key to refine your exam-writing skills and improve clarity, coherence, and completeness in responses.

Q1. Describe the process of photosynthesis in detail. Mention the role of chlorophyll, sunlight, carbon dioxide, and water.
Q2. Explain how insectivorous plants are different from other plants. Why do they consume insects despite having chlorophyll?
Q3. What is symbiosis? Explain with the example of lichen and Rhizobium bacteria in leguminous plants.

Section F: Case Study Based Question

Read the following case carefully and answer the questions that follow. Case-based questions are a recent addition to CBSE question papers and assess your ability to interpret information, apply theoretical knowledge to practical scenarios, and think critically. This format mirrors real-life problem solving and encourages interdisciplinary thinking. Answer each sub-question in one or two sentences, drawing directly from the passage and your understanding of NCERT Class 7 Science Chapter 1. CBSE values application and comprehension over rote recall in such questions. Practicing case studies enhances reading comprehension, data interpretation, and inference-making skills—essential for scoring high marks in modern CBSE examinations. After attempting, verify your responses against the answer key for accuracy and depth of understanding.

Complete Answer Key with Explanations

This section provides detailed answers and explanations for every question in the worksheet, enabling students to self-assess and learn from mistakes. The answer key follows the same sequence as the questions—Section A through Section F—and includes reasoning, scientific terminology, and references to NCERT Class 7 Science Chapter 1 where applicable. Understanding why an answer is correct is just as important as knowing the answer itself. Each MCQ explanation clarifies the logic behind the correct option and identifies common misconceptions. Fill-in-the-blank answers are given with exact NCERT terminology. Matching items are paired correctly with brief justifications. Short and long answers are presented in well-structured sentences mirroring CBSE marking schemes. Use this answer key to cross-verify your responses, identify weak areas, and reinforce conceptual understanding for better performance in school tests and term exams.

Section A Answers: 1(a) Autotrophic, 2(b) Chlorophyll, 3(c) Parasite, 4(c) Leaves, 5(b) Photosynthesis, 6(b) Soil is deficient in nitrogen
Section B Answers: 1. autotrophs, 2. chlorophyll, 3. stomata, 4. saprotrophs, 5. symbiosis
Section C Answers: 1-b, 2-a, 3-d, 4-c, 5-e
Section D Sample Answer (Q4): Autotrophic nutrition: Organisms prepare their own food from simple substances (e.g., green plants). Heterotrophic nutrition: Organisms depend on others for food (e.g., animals, fungi).
Section E Sample Answer (Q3): Symbiosis is a relationship where two different organisms live together and both benefit. In lichen, algae prepare food by photosynthesis and share it with fungi, while fungi provide shelter, water, and minerals to algae. Rhizobium bacteria in root nodules of leguminous plants fix atmospheric nitrogen for the plant, and in return receive food and shelter.
Section F Case Study Answers: (i) Saprotrophic nutrition, (ii) Cuscuta is a parasite; it derives nutrition from the host plant by sending root-like structures into the host's tissues, (iii) Pitcher plant grows in nitrogen-deficient soil, so it traps insects to supplement nitrogen, (iv) Bread mould or any fungus.

How to Use This Worksheet Effectively

To derive maximum benefit from this CBSE Class 7 Science Chapter 1 worksheet, follow these strategic steps. First, complete a quick revision of the chapter from your NCERT textbook or Class 7 Science notes before attempting the worksheet—this activates prior knowledge and sets the context. Set a timer for 60 minutes and attempt the worksheet in one sitting under exam-like conditions to build time management skills and simulate real test pressure. Write answers neatly in a notebook or printout, maintaining proper numbering and formatting as you would in a CBSE answer sheet. Do not refer to the answer key while solving; rely on your memory and understanding. After finishing, take a short break, then carefully compare your answers with the detailed answer key provided. Mark each answer as correct, partially correct, or incorrect. For every mistake, read the explanation thoroughly and revisit the relevant section in your NCERT Class 7 Science textbook to clear doubts. Note down difficult questions or concepts in a revision diary for focused study. Repeat this worksheet after a week to test retention and track improvement. Share your performance with your Science teacher for personalized feedback. Consistent practice using such structured worksheets significantly boosts confidence and performance in CBSE term exams and school assessments.

Attempt the worksheet without looking at notes or textbooks to simulate real exam conditions
Allocate roughly 10 minutes for Section A, 5 minutes for Section B, 5 minutes for Section C, 20 minutes for Section D, 15 minutes for Section E, and 5 minutes for Section F
Use the answer key only after completing all sections to ensure honest self-assessment
Identify and list topics or question types where you made errors for targeted revision
Reattempt incorrect questions after revising the relevant NCERT content to reinforce learning
Practice writing answers in full sentences with correct scientific terms to develop exam-ready writing skills

Common Mistakes Students Make and How to Avoid Them

When solving CBSE Class 7 Science Chapter 1 worksheets, students often make predictable errors that cost valuable marks. One frequent mistake is confusing autotrophic and heterotrophic modes—students sometimes classify fungi as autotrophs because they are plants. Remember, fungi lack chlorophyll and are heterotrophs that feed on dead organic matter (saprotrophs). Another common error is writing incomplete photosynthesis equations or forgetting to mention 'in the presence of sunlight and chlorophyll' as conditions. Always write the complete word equation or chemical equation as taught in NCERT Class 7 Science. Students also mix up stomata with chloroplasts; stomata are pores for gas exchange, chloroplasts are organelles containing chlorophyll. Spelling mistakes in scientific terms like 'symbiosis', 'saprotroph', or 'heterotrophic' can lead to mark deductions in CBSE exams—practice writing these words multiple times. In short-answer questions, vague or incomplete explanations without examples receive partial marks; always support definitions with concrete examples from the chapter such as Cuscuta for parasite or lichen for symbiosis. Finally, many students skip revising diagrams like the structure of a leaf or stomata, which can appear in practical-based questions. Avoiding these pitfalls through careful reading, precise terminology, and thorough revision ensures better scores and deeper conceptual mastery.

Do not confuse fungi (saprotrophs, no chlorophyll) with green plants (autotrophs)
Always mention conditions for photosynthesis: presence of sunlight and chlorophyll
Differentiate clearly between stomata (pores), chlorophyll (pigment), and chloroplast (organelle)
Practice correct spelling of key terms: autotrophic, heterotrophic, saprotrophic, symbiosis, parasite
Support every definition or statement with a relevant example from NCERT to score full marks
Revise labeled diagrams from the textbook—leaf structure, stomata, root nodules—for diagram-based questions

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Consistent practice using quality worksheets is essential, but personalized doubt-solving and concept reinforcement take learning to the next level. CBSETUTOR.ai offers a 24×7 AI tutor designed specifically for CBSE students from Classes 6 to 12. Simply snap a photo of any question from your NCERT Class 7 Science textbook, worksheet, or test paper, upload it to the platform, and receive step-by-step solutions instantly. Whether you are stuck on the photosynthesis equation, confused about the difference between parasites and saprotrophs, or need help framing long answers for Section E, the AI tutor provides clear explanations aligned with CBSE marking schemes and NCERT terminology. The platform covers every subject and chapter, so you can clarify doubts in Maths, Social Science, English, and Hindi as well—all under one roof. Parents appreciate the flat pricing of just ₹999 per month for unlimited access across all subjects and classes, eliminating the need for expensive tuition or multiple subscriptions. A 3-day free trial allows students to explore features risk-free before committing. With CBSETUTOR.ai, Class 7 students gain confidence, improve accuracy, and develop independent problem-solving skills that translate into better exam performance and a genuine love for Science.

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Additional Practice Resources and Tips for Mastery

Beyond this worksheet, students aiming for excellence in CBSE Class 7 Science should leverage multiple practice resources and study strategies. Start by thoroughly reading NCERT Class 7 Science Chapter 1 multiple times, underlining key terms like autotrophic, heterotrophic, photosynthesis, saprotrophs, parasites, and symbiosis. Maintain a dedicated Science notebook where you write definitions, draw and label diagrams of leaf structure showing chloroplasts and stomata, and note down examples of each mode of nutrition. Solve all in-text questions, back-exercise questions, and additional questions from the NCERT textbook—they form the foundation for worksheet and exam questions. Use NCERT Exemplar problems for Class 7 Science to challenge yourself with higher-difficulty questions and HOTS scenarios. Watch educational videos or animations demonstrating photosynthesis and nutrient absorption to visualize complex processes. Form study groups with classmates to discuss and quiz each other on chapter concepts, which enhances retention through peer teaching. Regularly take mock tests and time yourself to build speed and accuracy. Refer to previous years' CBSE Class 7 Science question papers to understand exam patterns and frequently asked questions. Keep a revision checklist covering all topics from the chapter and tick them off as you master each one. Combining these strategies with consistent worksheet practice ensures thorough preparation, deep conceptual understanding, and top scores in school exams and CBSE assessments.

Read NCERT Class 7 Science Chapter 1 at least twice, focusing on definitions and examples
Solve all NCERT in-text and back-exercise questions as foundational practice
Draw and label diagrams: leaf structure, stomata, root nodules of leguminous plants
Use NCERT Exemplar for advanced practice and HOTS questions beyond the textbook
Watch animations on photosynthesis and modes of nutrition for visual learning
Review previous CBSE Class 7 question papers to identify frequently asked topics and question formats

Frequently asked questions

What is the suggested time to complete this CBSE Class 7 Science Chapter 1 worksheet?+

Students should aim to complete this worksheet in 60 minutes under exam-like conditions. Allocate roughly 10 minutes for MCQs, 5 minutes each for fill-in-the-blanks and matching, 20 minutes for short answers, 15 minutes for long answers, and 5 minutes for the case study.

What difficulty level is this Nutrition in Plants worksheet suitable for?+

This worksheet is designed at a Medium difficulty level, suitable for average to above-average CBSE Class 7 students. It includes a balanced mix of recall-based, application-based, and HOTS questions aligned with the NCERT syllabus and CBSE exam pattern.

Are the answers provided with explanations in this worksheet?+

Yes, a comprehensive answer key with detailed explanations is included for every question—MCQs, fill-in-the-blanks, matching, short answers, long answers, and the case study. Explanations clarify concepts, correct common errors, and reference NCERT Class 7 Science Chapter 1 terminology.

Can I use this worksheet for exam preparation and revision?+

Absolutely. This worksheet is ideal for homework, self-study, weekend practice, and pre-exam revision. It covers all key topics from NCERT Class 7 Science Chapter 1 and mirrors the CBSE question pattern, making it an excellent tool for thorough exam preparation.

What topics from Chapter 1 Nutrition in Plants are covered in this worksheet?+

The worksheet comprehensively covers autotrophic and heterotrophic nutrition, photosynthesis process and equation, role of chlorophyll and stomata, saprotrophic nutrition (fungi), parasitic nutrition (Cuscuta), symbiotic relationships (lichen, Rhizobium), and insectivorous plants (pitcher plant).

How should my child approach the case study question in Section F?+

Read the case study passage carefully, underline key information, and then answer each sub-question in one or two sentences. Draw directly from the passage and apply concepts from NCERT Class 7 Science Chapter 1. Case studies test comprehension, application, and inference skills.

Is this worksheet aligned with the latest CBSE syllabus for Class 7 Science?+

Yes, this worksheet is fully aligned with the latest CBSE syllabus and follows the NCERT Class 7 Science textbook content for Chapter 1 Nutrition in Plants. All terminology, examples, and question formats match current CBSE exam standards.

Can I print this worksheet for offline practice?+

Yes, this worksheet is designed to be printable. You can download or print it for your child to practice offline in a notebook or answer sheet, simulating real exam conditions and improving handwriting and time management skills.

What are common mistakes students make in Nutrition in Plants questions?+

Common errors include confusing autotrophs with heterotrophs, mixing up saprotrophs and parasites, writing incomplete photosynthesis equations, misspelling scientific terms, omitting examples in answers, and neglecting to mention conditions like 'presence of sunlight and chlorophyll'.

How can CBSETUTOR.ai help my child with Science Chapter 1 doubts?+

CBSETUTOR.ai provides a 24×7 AI tutor where students can upload photos of any question from this worksheet or textbook and receive instant, step-by-step solutions. It covers all CBSE subjects for Classes 6–12 at a flat ₹999/month with a 3-day free trial, making personalized doubt-solving affordable and accessible anytime.

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