Science Chapter 1 - Nutrition in Plants Class 7 NCERT Solutions - FREE PDF Download
Unlock the comprehensive study with Vedantu through NCERT Solutions for class 7 Science Chapter 1 . This gives access to the class 7 science chapter 1 PDF elucidating fundamental principles crucial for understanding the subject's intricacies and topics such as nutrition, stomata, photosynthesis, chlorophyll, etc.
Table of Content
By accessing Chapter 1 nutrition in Plants Class 7, students gain comprehensive insights into the core concepts outlined in the curriculum. With a focus on clarity and depth, these resources serve as indispensable tools for students navigating through science class 7, chapter 1. Check out the revised class 7 science syllabus and start with Vedantu to embark on a journey of academic excellence.
Q1. Why do organisms need to take food?
Ans:
Organism needs food to:-
Survive
Grow
Gain energy
Damage repair
Maintain bodily functions
Other activities
Q2. Distinguish between a parasite and saprophyte.
Ans: Differences between parasites and saprophytes are as follows:
Q3. How would you test the presence of starch in leaves?
Ans: When starch reacts with an iodine solution, it takes on a characteristic dark blue colour. If a few drops of iodine solution are applied to a leaf and a dark blue colour develops, the existence of starch in the leaf is confirmed.
Q4. Give a brief description of the process of synthesis of food in green plants.
Ans: In green plants, the synthesis of food occurs by a process called photosynthesis. During this process, chlorophyll in the cells of the leaves uses carbon dioxide and water to synthesise carbohydrates in the presence of sunlight. The process can be represented by an equation:
During this process, oxygen is released, and the carbohydrates generated are stored as starch.
Q5. Show with the help of a sketch that the plants are the ultimate source of food.
Ans:
6. Fill in the blanks:
Green plants are called ----------- since they synthesize their own food.b. The food synthesized by the plants is stored as ---------------.
Ans: Green plants are called autotrophs since they synthesize their own food.
The food synthesized by the plants is stored as ---------------.
Ans: The food synthesized by the plants is stored as starch.
In photosynthesis, solar energy is captured by the pigment called------------.
Ans: In photosynthesis, solar energy is captured by the pigment called chlorophyll.
During photosynthesis plants take in ------------- and release -------------.
Ans: During photosynthesis, plants take in carbon dioxide and release oxygen.
Q7. Name the following:
A Parasitic plant with a yellow, slender, and tubular stem.
Ans: Cuscuta- The Cuscuta plant is classified as a parasite since it lacks chlorophyll and feeds on the host. The host loses vital nutrients as a result of this process.
A plant that has both autotrophic and heterotrophic modes of nutrition.
Ans: Pitcher plant - The pitcher plant is an autotrophic plant that performs photosynthesis, but it also has a partly heterotrophic method of nutrition because it grows in nitrogen-deficient soil.
The pores through which leaves exchange gases.
Ans: Stomata- Gases such as carbon dioxide, water vapour, and oxygen can diffuse into and out of the plant's interior tissues through stomata.
Q8. Tick the Correct Answer:
a. Amarbel is an example of:
Autotroph
Parasite
Saprophyte
Host
Ans: (ii) Parasite-
Cuscuta or Dodder are other names for Amarbel. A parasite is an organism that grows on the body of another organism and feeds on its nutrition.
b. The plant which traps and feeds on insects is:
Cuscuta
China rose
Pitcher plant
Rose
Ans: (iii) Pitcher plant
The pitcher plant is a type of plant with trapping and digesting leaves. Medicine is made from the leaf and roots.
Q9. Match the item in given column I with those in column II.
Ans:
Q10. Mark “T” if the statement is true and “F” if it is false:
Carbon dioxide is released during photosynthesis. (T/F)
Ans: False- Oxygen is released during photosynthesis.
Plants that synthesize their food themselves are called saprotrophs. (T/F)
Ans: False- Plants which synthesize their food themselves are called autotrophs.
The product of photosynthesis is not a protein. (T/F)
Ans: True- The product of photosynthesis is not a protein.
Solar energy is converted into chemical energy during photosynthesis. (T/F)
Ans: True- Solar energy is converted into chemical energy during photosynthesis.
Q11. Choose the Correct Option From the Following:
Which part of the plant gets carbon dioxide from the air for photosynthesis?
Root hair
Stomata
Leaf veins
Sepals
Ans: (b) Stomata get carbon dioxide from the air for photosynthesis.
Q12. Choose the correct option from the following:
Plants take carbon dioxide from the atmosphere mainly through their:
Roots
Stem
Flowers
Leaves
Ans: (d) Plants take carbon dioxide from the atmosphere mainly through their leaves.
13. Why do farmers grow many fruits and vegetable crops inside large green houses? What are the advantages to the farmers?
Farmers grow many fruits and vegetable crops inside large green houses as it protects crops from external climatic conditions and provides optimal temperature for the growth of plants.
Topics Covered in Science Chapter 1 Nutrition In Plants Class 7
Benefits of NCERT Class 7 Science Chapter 1 Nutrition In Plants
Experts at Vedantu have made class 7 science chapter 1, nutrition in Plants, questions and answers in a simple and easy-to-understand format. Students can get the benefits given below:
Subject matter experts have designed the science ch 1 class 7 Solutions. That is why the NCERT Class 7th Science Chapter 1 Solutions can be considered the students' most comprehensive, easy-to-understand, and to-the-point study materials.
Students have the unique ability to ask experts whenever they face any problem.
Class 7 science chapter 1 PDF has arranged all the concepts and equations in a proper sequence, thus saving students time while studying.
The students are encouraged to perform several Science experiments to understand the concepts.
Since class 7 science ch 1 question answers can be downloaded, students can read and revise the concepts conveniently.
CBSE Science Class 7 Chapter 1 becomes more helpful when students plan for a quick revision before the examination.
Science class 7 chapter 1 question-answer solutions promise a significant increase in marks for the students.
Important Study Material Links for Class 7 Science Chapter 1
Conclusion
Chapter 1, nutrition in Plants class 7, provides students with simple and detailed definitions and explanations of each concept covered in the chapter. Therefore, it is highly recommended that students download and refer to our comprehensive and expert-curated class 7 science chapter 1 question answer to get a gist of the chapter before the exam and to know how to answer the questions in the exam. Students can also refer to our plethora of other study resources related to this chapter, which are available for free on our website and mobile app.
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Related Study Material Class 7 Science
FAQs on NCERT Solutions for Class 7 Science Chapter 1 Nutrition In Plants
1. Explain the process of how nutrients are replenished in the soil from class 7 science chapter 1 question answer.
The plants absorb mineral nutrients from the soil. The fertilizers and manures containing various nutrients like nitrogen, potassium, and phosphorus need to be added from time to time to enrich the soil. Nitrogen gas is available in large amounts but plants cannot use it directly from the air. The bacterium Rhizobium lives in the roots of the leguminous plants. Rhizobium bacteria convert the non-usable form of nitrogen. In this way, the nutrients are replenished in the soil by using fertilizers and manures, and by sowing leguminous plants.
2. Explain the mechanism of eating insects by a pitcher plant as a nutritious source related to NCERT class 7 science chapter 1
The leaves of the pitcher plants are tailored into a pitcher-like structure. The tip of the leaves forms a lid that can open and close the mouth of the pitcher-like structure of the leaves. There is hair inside the pitcher, which is directed downwards. When an insect lands in the pitcher, it gets entangled in the hair. The pitcher secretes some digestive juices that help the plant digest the insect. Such insects eating plants are insectivorous plants. These plants do not get all the necessary nutrients from the soil. So, they are called partial heterotrophs.
3. Summarize Science ch 1 class 7.
In Class 7 Chapter 1 Nutrition in Plants, students are introduced to topics related to plants and how they get nutrition for themselves. The concepts covered in these topics include the photosynthesis process, chlorophyll and stomata. The chapter also teaches other modes of nutrition in insectivorous plants.
Students also learn how nutrients are replenished in the soil and how atmospheric nitrogen is fixed in the soil through a bacterium called Rhizobium.
4. Why should we grow crops inside greenhouses as described in class 7 science ch 1 question answer?
Factors like diseases, rodents, wind, and adverse climatic conditions cannot affect the crops grown in greenhouses. Therefore, growing crops in greenhouses is beneficial for the farmers in the long run.
5. How can I download the Solutions of Class 7th Science Chapter 1 NCERT?
The solutions are easily available on the Vedantu site.
Click on NCERT Solutions of Class 7 Science and choose Chapter 1.
The webpage with Vedantu’s solutions for Chapter 1 of Class 7th Science NCERT Textbook will open.
To download this, click on the Download PDF button and you can view the solutions offline.
For other solutions and concept-related modules on other topics or subjects, visit the Vedantu and go through the related modules. The solutions are free of cost and also available on the Vedantu Mobile app.
6. What do you understand about photosynthesis according to class 7 science chapter 1 question answer?
During photosynthesis, the light energy is converted into chemical energy by green plants and other organisms. Chloroplasts are tiny particles found inside plant cells that perform photosynthesis. Plants absorb carbon dioxide from the air and water from the earth via their roots. The Sun gives out light energy. The leaves release the oxygen that has been generated into the air. Since it is an important topic, do understand it properly along with all its components such as chloroplasts and so on.
7. What are the different modes of Nutrition in Plants from Science Class 7 Chapter 1 question answer?
Class 7 Science Chapter 1 categorises plants into two main types:
Autotrophic Nutrition, in which plants can synthesise their own food using sunlight.
Heterotrophic Nutrition, in which plants cannot produce their own food and rely on other organisms for their nutritional needs.
8. How can I improve my understanding of the concepts covered in science class 7 chapter 1 question answer?
Here are some tips to solidify your understanding:
Relate to real-world examples
Perform experiments
Use diagrams and illustrations
Ask questions
Students can download and refer to class 7 science chapter 1 PDF to get all the solved answers related to this chapter.
9. What is the importance of nutrition for plants?
NCERT class 7 science chapter 1 explains the concepts related to nutrition and its importance. A few of the points to remember are:
Growth and development
Energy Production
Repair and maintenance
10. What is the role of chlorophyll in photosynthesis?
Chlorophyll is a green pigment present in plant leaves and plays a crucial role in photosynthesis by absorbing sunlight energy. To learn more about chapter 1, students can refer to class 7th science chapter 1 solutions provided by Vedantu.
