Study MaterialsNCERT SolutionsNCERT Solutions For Class 7 ScienceNcert Solutions for Class 7 Science Chapter 1 Nutrition In Plants

Ncert Solutions for Class 7 Science Chapter 1 Nutrition In Plants

NCERT Solutions for Class 7 Science Chapter 1 – Nutrition in Plants

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    Subject specialists have designed NCERT solutions for Science Class 7 Chapter 1 which includes thorough solutions for reference. These solutions are updated according to the latest CBSE syllabus for 2012-22 and are provided in easy language for understanding. Tips and tricks are also provided.

    These solutions are provided so a student can clear his doubts and get help with deep understanding of the concept. Also you can refer them to make the chapter notes and revisions notes. PDF of this can also be downloaded from website.

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    NUTRITION IN PLNATS

    CHAPTER 1_NUTRITION IN PLNATS NCERT SOLUTIONS

    1.Why do organisms need to takefood ?

    A. Living organisms need to take foodfor :

    i) getting energy and survival.

    ii) growth and development of the body.

    iii) the maintenance of their bodies.

    2. Distinguish between a parasite and a saprotroph.

    A.

    PARASITE SAPROTROPH
    i) An organism which depends on other organisms for its nourishment and growth is called parasite. i) An organism that take nutrients in the form of solution from dead and decaying organic matter is called saprotroph.
    ii) Parasite gets its nourishment from a living organism known as host.

    ii) Saprotroph gets its nourishment from dead and decaying organic matter.
    iii) Chlorophyll may be present

    Eg : Cuscuta (Amarbel), rafflesia etc.

    iii) Chlorophyll is absent

    Eg : Fungi and some bacteria.

    3. How would you test the presence of starch in leaves?

    A. i) Take two healthy green potted plants of the same type.

    ii) Keep one potted plant in a dark room for one or two days in order to remove all the starch from the leaves.

    iii) Keep the other plant in sunlight.

    iv) Now, take one leaf from each potted plant and put a few drops of iodine solution on them. Then note down the observation.

    v) Noblue blackcolour will be observed on the leaves of the plant kept in the dark room. This indicates the absence of starch.

    vi) Blue black colour will be observed on the leaves of the plant kept in sunlight. This indicates the presence of starch.

    4. Give a brief description of the process of synthesis of food in green plants.

    A. i) The process of synthesis of food in green plants is called photosynthesis.

    ii) During photosynthesis, chlorophyll containing cells of leaves and other parts of a plant, in the presence of sunlight, use carbon dioxide and water to synthesise food materials.

    Carbon dioxide + water Carbohydrates + Oxygen

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

    A.

    6.Fill in theblanks :

    a.Green plants are called ______________ since they synthesise their own food.

    b.The food synthesised by the plants is stored as ______________.

    c. In photosynthesis solar energy is captured by the pigment called ______________.

    d. During photosynthesis plants take in ______________ and release ______________.

    A. a) autotrophs b) starch c) chlorophyll d) carbon dioxide, oxygen

    7. Name thefollowing :

    i) A parasitic plant with yellow, slender and tubular stem.

    ii) A plant that has both autotrophic and heterotrophic mode of nutrition.

    iii) The pores through which leaves exchange gases.

    A. i)Cuscuta ii) Pitcher plant iii) Stomata

    8. Tick the correct answer:

    a) Amarbel is an exampleof :

    i) autotroph ii) parasite iii) saprotroph iv) host

    b) The plant which traps and feeds on insectsis :

    i)Cuscuta ii) China rose iii) pitcher plant iv) rose

    Match the items given in Column I with those in ColumnII :

    Column I Column II

    i. Chlorophyll ( ) A) Bacteria

    Nitrogen ( ) B) Heterotrophs

    iii. Amarbel ( ) C) Pitcher plant

    iv.Animals ( ) D) Leaf

    v. Insects ( ) E) Parasite

    A. i) D ii) A iii) E iv) B v) C

    10. Mark ‘T’ if the statement is true and ‘F’ if it isfalse :

    i. Carbon dioxide is released during photosynthesis. ( F )

    Plants which synthesise their food themselves are called saprotrophs. ( F )

    iii. The product of photosynthesis is not a protein. ( T )

    Solar energy is converted into chemical energy during photosynthesis. ( T )

    11. Choose the correct option from thefollowing :

    Which part of the plant takes in carbon dioxide from the air for photosynthesis? ( ii )

    i) root hair ii) stomata iii) leaf veins iv) sepals

    12. Choose the correct option from thefollowing :

    Plants take carbon dioxide from the atmosphere mainly through their : ( iv )

    i) roots ii) stem iii) flowers iv) leaves

    Important topics covered in these NCERT Solutions

    Mode of Nutrition in Plants

    1. Photosynthesis – food making process in Plants
    1. The alternative mode of nutrition in Plants
    1. Saprophytes
    1. Nutrient replenishment in the soil

    This chapter is interesting as it introduces students to the world of plants around us. The curriculum covers several projects that will help students to enjoy this learning process. The curriculum also deal with new terminology and concepts, which help to look forward for this Chapter.

    In this Chapter, students came to know about many new concepts which deals with plants and how they get nutrition for themselves, they also deal with about photosynthesis-process of preparation of food in plants, chlorophyll, stomata. Several other modes of nutrition in plants like insectivorous plants. This chapter deal with the basic of plants nutrients, how plants make their food, but studying this Chapter in depth will further help the students to understand the concepts of botany in higher standards. Therefore student must prepare to note so that they can quickly revise the notes while revising the Chapter for the exams. Students can also use these NCERT Solution for any quick references to comprehend complex topics.

    About Infinite Learn Solutions

    Infinite Learn mission is to create world-class learning content for students. We are focussed on raising the students learning abilities. These Solutions have been structured very carefully to give several benefits to the students that utilize these study materials. That is why, these are crafted by subject matter experts to focus on concept and its explanation.

    For any type of support related to the NCERT Solutions for Class 7 given here, students can approach our support team who will help clear all their doubts. Students can also check out Infinite Learn for a more efficient learning experience.

    Frequently Asked Questions on NCERT Solutions of this Chapter

    What are the important topics covered in these NCERT Solutions?

    The important topics covered are –
    1. Mode of Nutrition in Plants
    2. Photosynthesis – food making process in Plants
    3. The alternative mode of nutrition in Plants
    4. Saprophytes
    5. Nutrient replenishment in the soil

    What are the benefits to the farmers by growing fruits and vegetable crops inside greenhouses in the Chapter 1 of these NCERT Solutions?

    The benefits to the farmers are –
    1. The crops get protected from diseases and can withstand adverse climatic conditions.
    2. The crops get protected from rodents and wind.
    For more detail answers you can refer INFINITE learn website.

    What will I learn from these NCERT?

    From this chapter, students get introduced to the world of plants. Several projects are covered in the curriculum which help students to enjoy the learning process. Latest terminology and concepts are also included in the solutions to enhance confidence among students for the exams. The basics of plant nutrients and how plants make their food are covered in this Chapter. It helps in a strong foundation of fundamental concepts within students which cover their higher levels of education.

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