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Nutrition In Plants Chapter 1 Class 7 Science

Nutrition In Plants Chapter 1 Class 7 Science

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Nutrition In Plants Chapter 1 Class 7 Science
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Q.1. Why do organisms take food?
Q.2. Distinguish between a parasite and a saprotroph.
Q.3. How would you test the presence of starch in leaves?
Q.4. Give a brief description of the process of synthesis of food in green plants.
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Kursun Məzmunu

5 bölmə • 5 dərs • 00:29:56 ümumi müddət

Introduction

02:53

Why do organisms take food?

08:58

Q.1. Why do organisms take food?

Q.2. Distinguish between a parasite and a saprotroph.

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

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

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

08:13
Show with the help of a sketch that plants are the ultimate source of food. Q.6. Fill in the blanks: (a) Green plants are called _______________ since they synthesise their own food. (b) The food synthesised by plants is stored as _____________. (c) In photosynthesis solar energy is absorbed by the pigment called _______. (d) During photosynthesis plants take in __________________ and release ________________ gas. Q.7. Name the following: (i) A parasitic plant with yellow, slender and branched stem. (ii) A plant that is partially autotrophic. (iii) The pores through which leaves exchange gases.
  1. Tick the correct answer:
(a) Cuscuta is an example of: (i) autotroph (ii) parasite (iii) saprotroph (iv) host
  1. Tick the correct answer:
(b) The plant which traps and feeds on insects is: (i) Cuscuta (ii) china rose (iv) pitcher plant iv) rose
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Tələblər

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Hədəf Auditoriya

Class 7

Bu kurs haqqında

  • Why do organisms take food?
  • Distinguish between a parasite and a saprotroph.
  • How would you test the presence of starch in leaves?
  • Give a brief description of the process of synthesis of food in green plants.
  • Show with the help of a sketch that plants are the ultimate source of food.
  • Fill in the blanks: (a) Green plants are called _______________ since they synthesize their own food.
  • (b) The food synthesized by plants is stored as _____________.

    (c) In photosynthesis solar energy is absorbed by the pigment called _______.

    (d) During photosynthesis plants take in __________________ and release ________________ gas.

  • Name the following:
  • (i) A parasitic plant with yellow, slender and branched stem.

    (ii) A plant that is partially autotrophic.

    (iii) The pores through which leaves exchange gases.

  • Tick the correct answer:
  • (a) Cuscuta is an example of:

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

    (b) The plant which traps and feeds on insects is:

    (i) Cuscuta (ii) china rose (iv) pitcher plant (iv) rose

  • Match the items given in Column I with those in Column II:
  • Column I Column II

    Chlorophyll Rhizobium

    Nitrogen Heterotrophs

    Cuscuta Pitcher plant

    Animals Leaf

    Insects Parasite

  • Mark ‘T’ if the statement is true and ‘F’ if it is false:
  • (i) Carbon dioxide is released during photosynthesis. (T/F)

    (ii) Plants which synthesis their food are called saprotrophs. (T/F)

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

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

  • Choose the correct option from the following:
  • Which part of the plant takes in carbon dioxide from the air for photosynthesis?

    (i) Root hair (ii) Stomata (iii) Leaf veins (iv) Petals

  • Choose the correct option from the following: Plants take carbon dioxide from the atmosphere mainly through their:
  • (i) roots (ii) stem (iii) flowers (iv) leaves

  • Why do farmers grow many fruits and vegetable crops inside large green houses? What are the advantages to the farmers?
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