CBSE Class 7 Science Worksheets for Nutrition in Plants

CBSE Class 7 students and teachers can download free PDF worksheets on the topic of “Nutrition in Plants”. These worksheets have been designed according to the latest syllabus and examination pattern. The worksheets include questions and answers covering all the important topics related to plant nutrition. Students can practice these worksheets to improve their knowledge and understanding of this chapter.

By solving these worksheets, Class 7 students can learn the key concepts of plant nutrition, prepare better for school exams and tests, and get more marks in their science subjects. The PDF worksheets have been created by experienced school teachers as per the latest NCERT books and CBSE syllabus. Students can download these free resources and use them for daily practice.

So, students of CBSE Class 7 Science should make the most of these free, printable worksheets on “Nutrition in Plants” to enhance their learning and performance.

Worksheet on Nutrition in Plants for Class 7

Welcome to this exciting worksheet on the topic of nutrition in plants for Class 7 students! In this worksheet, you will explore the fascinating world of how plants obtain and utilize the essential nutrients they need to grow and thrive.

Nutrition in plants class 7 worksheet and nutrition in plants for class 7 worksheet with answers are the focus of this learning experience. Through a series of engaging activities and questions, you will deepen your understanding of the various processes involved in plant nutrition, such as photosynthesis, absorption of water and minerals, and the role of different plant parts.

This worksheet is designed to be both informative and interactive, allowing you to apply your knowledge and develop critical thinking skills. Get ready to embark on an exciting journey of discovery as you uncover the secrets of nutrition in the plant kingdom!

Must See! – Class 7 Science Chapter 1 Nutrition in Plants MCQ

Worksheet on Nutrition in Plants for Class 7 PDF

This worksheet is all about how plants get the food they need. Plants can make their own food, which is called photosynthesis. We will learn about the different parts of photosynthesis and the nutrients plants take from the soil to grow.

Worksheet on Nutrition in Plants for Class 7 PDF

Nutrition in Plants for Class 7 Worksheet with Answers

Plants are living organisms that need nutrients to grow and thrive. Just like humans and animals, plants require specific nutrients to perform various functions, such as photosynthesis, respiration, and growth. This “Nutrition in Plants for Class 7 Worksheet with Answers” will help you understand the essential nutrients plants need and how they obtain them from their environment.

Fill in the Blanks

Ques: Green plants are called __________ since they synthesize their own food.

Ans: Autotrophs

Ques: The food synthesized by plants is stored as __________.

Ans: Starch

Ques: In photosynthesis, solar energy is captured by the pigment called __________.

Ans: Chlorophyll

Ques: During photosynthesis, plants take in __________ and release __________.

Ans: Carbon dioxide, Oxygen

Ques: Proteins contain __________.

Ans: Amino acids

Ques: Farmers enrich the soil by adding __________ and __________.

Ans: Fertilizers, Manures

Ques: In most green plants, photosynthesis takes place in the __________.

Ans: Leaves

Ques: Plants are unable to use atmospheric __________.

Ans: Nitrogen

Ques: Green patches in stagnant water are aquatic __________.

Ans: Algae

Ques: During photosynthesis, __________ energy is captured by the leaves and stored as food.

Ans: Solar

Also Check – NCERT Solutions for Class 7 Science

Multiple Choice Questions

Ques: Amarbel is an example of:

1. Autotroph
2. Parasite
3. Heterotroph
4. Host

Ans: b. Parasite

Ques: The plant that traps and feeds on insects is:

1. Cucuta
2. Rose
3. Pitcher plant
4. Sunflower

Ans: c. Pitcher plant

Ques: Which of these components of food can be synthesized by plants?

1. Carbohydrates
2. Fats
3. Proteins
4. All of these

Ans: d. All of these

Ques: Which of these is/are necessary for photosynthesis to take place?

1. Carbon dioxide
2. Chlorophyll
3. Water
4. All of these

Ans: d. All of these

Ques: The trapped insect gets entangled in the hair in:

1. Green plant
2. Insectivorous plants
3. Grass
4. None of these

Ans: b. Insectivorous plants

Very Short Ans Questions

Ques: What are stomata?

Ans: Stomata are pores present on the surface of leaves that allow the exchange of gases.

Ques: Define autotrophs.

Ans: Autotrophs are organisms that can synthesize their own food from simple inorganic substances like carbon dioxide and water, using sunlight as the source of energy.

Ques: Name the end product of photosynthesis.

Ans: The end product of photosynthesis is glucose (a type of carbohydrate).

Ques: Name the green pigment present in leaves.

Ans: The green pigment present in leaves is chlorophyll.

Ques: What are lichens?

Ans: Lichens are a symbiotic relationship between a fungus and an alga, where the fungus provides shelter and the alga provides food through photosynthesis.

Short Ans Questions

Ques: What is a symbiotic relationship?

Ans: Symbiosis is a close and long-term interaction between two different organisms, where both organisms benefit from the relationship.

Ques: How are saprophytes, parasites, and symbionts different from each other?

Ans:

• Saprophytes: Organisms that obtain nutrients from dead and decaying organic matter.
• Parasites: Organisms that obtain nutrients from a living host, often causing harm to the host.
• Symbionts: Organisms that live in a mutually beneficial relationship with another organism.

Ques: How are water and minerals transported to the plant?

Ans: Water and minerals are transported to the plant through the root system. The roots absorb water and minerals from the soil, and these are then transported to the rest of the plant through a network of vessels called xylem.

Long Ans Questions

Ques: Show with the help of a sketch that plants are the ultimate source of food.

Ans: Plants are the ultimate source of food because they can synthesize their own food through the process of photosynthesis. They use carbon dioxide, water, and sunlight to produce glucose, which is then used by the plant itself or consumed by other organisms. The energy stored in the glucose can then be passed on to other organisms through the food chain, making plants the foundation of most food webs.

Ques: How are nutrients replenished in the soil?

Ans: Nutrients in the soil can be replenished through the following methods:

Addition of fertilizers and manures: Fertilizers and manures containing essential nutrients like nitrogen, phosphorus, and potassium are added to the soil to enrich it.

Crop rotation: Rotating crops, especially leguminous plants like peas and beans, helps fix atmospheric nitrogen in the soil through the action of Rhizobium bacteria.

Decomposition of organic matter: Dead and decaying plant and animal matter is broken down by microorganisms, releasing nutrients back into the soil.

Ques: Explain the process of photosynthesis.

Ans: Photosynthesis is the process by which green plants use sunlight, water, and carbon dioxide to produce glucose and oxygen. The steps involved are:

• Absorption of sunlight by chlorophyll in the leaves.
• Splitting of water molecules to release hydrogen and oxygen.
• Reduction of carbon dioxide using the hydrogen to produce glucose.
• Storage of glucose as starch for later use by the plant.

Ques: How would you test the presence of starch in leaves?

Ans: To test the presence of starch in leaves, you can follow these steps:

1. Collect a leaf from a plant and boil it in water to remove the chlorophyll.
2. Dip the decolorized leaf in a solution of iodine.
3. If the leaf turns blue-black, it indicates the presence of starch.

Long Ans Questions

Ques: What are stomata, and what function do they serve?

Ans: Stomata are tiny openings or pores found on the surface of leaves. They allow the exchange of gases (carbon dioxide and oxygen) and transpiration (loss of water vapor).

Ques: How do plants obtain nitrogen?

Ans: Plants obtain nitrogen from the soil in the form of nitrates and ammonium salts. Nitrogen is essential for the synthesis of proteins and other important compounds.

Ques: What is the significance of the sun in the process of photosynthesis?

Ans: The sun provides the light energy needed for photosynthesis. This energy is captured by chlorophyll and used to convert carbon dioxide and water into glucose and oxygen.

Ques: What is the role of roots in plant nutrition?

Ans: Roots absorb water and minerals from the soil, which are then transported to other parts of the plant. Roots also anchor the plant in the soil.

Ques: Define heterotrophic nutrition and give an example.

Ans: Heterotrophic nutrition is a type of nutrition in which organisms depend on other organisms for food. For example, fungi and animals are heterotrophs.

Ques: What is the difference between autotrophs and heterotrophs?

Ans: Autotrophs, like green plants, can produce their own food through photosynthesis, whereas heterotrophs, like animals and fungi, rely on other organisms for their nutrition.

Ques: Explain the term “symbiosis” with an example.

Ans: Symbiosis is a close and long-term biological interaction between two different biological organisms. An example is the relationship between leguminous plants and nitrogen-fixing bacteria (Rhizobium), where both benefit from each other.

Ques: What are the products of photosynthesis?

Ans: The products of photosynthesis are glucose (a type of sugar) and oxygen.

Ques: How do parasitic plants obtain their nutrition? Give an example.

Ans: Parasitic plants obtain their nutrition by attaching themselves to other living plants and extracting water and nutrients from them. An example is the mistletoe.

Ques: What is the importance of photosynthesis for life on Earth?

Ans: Photosynthesis is essential for life on Earth as it produces oxygen, which is necessary for the survival of most living organisms. It also forms the base of the food chain by producing glucose, which is used as energy by plants and other organisms.

Ques: Describe how insectivorous plants obtain nutrients.

Ans: Insectivorous plants, like the Venus flytrap, obtain nutrients by trapping and digesting insects. These plants typically grow in nutrient-poor soils and supplement their nutrient intake by digesting insects.

Ques: What is the role of phloem in plants?

Ans: The phloem is responsible for transporting the products of photosynthesis (mainly glucose) from the leaves to other parts of the plant, where it is used for growth, storage, and energy.

Ques: What is the main function of leaves in a plant?

Ans: The main function of leaves is to carry out photosynthesis, which produces food for the plant. Leaves are also involved in transpiration and gas exchange.

Ques: How do legumes help in nitrogen fixation?

Ans: Legumes have a symbiotic relationship with nitrogen-fixing bacteria (Rhizobium) present in their root nodules. These bacteria convert atmospheric nitrogen into a form that plants can use, enriching the soil with nitrogen.

Ques: What is chemosynthesis, and which organisms perform it?

Ans: Chemosynthesis is the process by which certain organisms, such as some bacteria, produce food using chemical energy instead of light energy. These organisms often live in extreme environments like deep-sea vents.

Ques: How does water move from the roots to the leaves of a plant?

Ans: Water moves from the roots to the leaves of a plant through the xylem vessels. This movement is driven by transpiration (loss of water vapor from the leaves), which creates a negative pressure that pulls water upward from the roots.

Key Features of the Worksheets:

• Comprehensive Coverage: The worksheets include questions and answers on all the essential topics related to plant nutrition.
• Improved Learning: By solving these worksheets, you can enhance your knowledge and understanding of plant nutrition.
• Better Exam Preparation: These worksheets are designed to help you prepare better for school exams and tests.
• Higher Marks: By practicing these worksheets, you can score better in your science subjects.

Download the Worksheets:

• Nutrition in Plants Class 7 Worksheet: A comprehensive worksheet covering all the key concepts.
• Nutrition in Plants for Class 7 Worksheet with Answers: A worksheet with answers to help you check your progress.
• Worksheet on Nutrition in Plants Class 7: A detailed worksheet for daily practice.
• Class 7 Nutrition in Plants Worksheet: A worksheet designed specifically for CBSE Class 7 students.
• Nutrition in Plants for Class 7 Worksheet: A worksheet that covers all the essential topics.

Benefits of Using These Worksheets:

• Enhanced Learning: Practice these worksheets to improve your understanding of plant nutrition.
• Better Exam Preparation: Use these worksheets to prepare for your school exams and tests.
• Higher Marks: By practicing these worksheets, you can score better in your science subjects.

Nutrition in Plants for Class 7 Worksheet FAQs

What are the essential nutrients plants need?

Plants need water, sunlight, carbon dioxide, nitrogen, potassium, phosphorus, and other essential nutrients to grow and thrive.

How do plants obtain nutrients?

Plants obtain nutrients through their roots, which absorb them from the soil. They also get nutrients from the air through photosynthesis.

What is photosynthesis?

Photosynthesis is the process by which plants convert sunlight, water, and carbon dioxide into glucose and oxygen.

Why do plants need nutrients?

Plants need nutrients to perform various functions, such as growth, development, and defense against diseases.

What are some common sources of nutrients for plants?

Common sources of nutrients for plants include compost, manure, and fertilizers, which provide essential nutrients like nitrogen, phosphorus, and potassium.