class 7th SCIENCE chapter 1 MCQ

CLASS 7 CHAPTER 1 : Nutrition in Plants MCQ

Quiz

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1. Organisms which prepare food for themselves using simple
   naturally available raw materials are referred to as
   1.   heterotrophs
   2.   autotrophs
   3.   parasites
   4.   saprophytes
2. In the absence of which of the following will photosynthesis
   not occur in leaves?
   1.   Guard cells
   2.   Chlorophyll
   3.   Vacuole
   4.   Space between
3. Which of the following statements is/are correct?
   1. All green plants can prepare their own food.
   2. Most animals are autotrophs.
      .
   3. Carbon dioxide is not required for photosynthesis.
   4. Oxygen is liberated during photosynthesis
4. Which of the following statements is/are correct?
   (i) All green plants can prepare their own food.
   (ii) Most animals are autotrophs.
   (iii) Carbon dioxide is not required for photosynthesis.
   (iv) Oxygen is liberated during photosynthesis.
   Choose the correct answer from the options below:
   1.   (i) and (iv)
   2.   (ii) only
   3.   (ii) and (iii)
   4.   (i) and (ii)
5. Pitcher plant traps insects because it
   1.   is a heterotroph.
   2.   grows in soils which lack in nitrogen.
   3.   does not have chlorophyll.
   4.   has a digestive system like human beings.
6. The term that is used for the mode of nutrition in yeast,
   mushroom and bread-mould is
   1.   autotrophic
   2.   insectivorous
   3.   saprophytic
   4.   parasitic
7. When we observe the lower surface of a leaf through a
   magnifying lens we see numerous small openings. Which of
   the following is the term given to such openings?
   1.   stomata
   2.   lamina
   3.   midrib
   4.   veins
8. Two organisms are good friends and live together. One provides
   shelter, water, and nutrients while the other prepares and
   provides food. Such an association of organisms is termed as
   1.   saprophyte
   2.   parasite
   3.   autotroph
   4.   symbiosis
9. Which of the following raw material is available in the air for
   photosynthesis?
   1.   oxygen
   2.   carbon dioxide
   3.   nitrogen
   4.   hydrogen
10. Which of the following is a nutrient?
    1.   proteins
    2.   fat
    3.   vitamin
    4.   all of these
11. Which part of the plant is called its food factory ?
    1.   fruits
    2.   seeds
    3.   leaves
    4.   flowers
12. What is the ultimate source of energy for all living organisms?
    1.   water energe
    2.   wind energy
    3.   solar energy
    4.   chemical energy
13. Green pigment present in the leaves is called
    1.   haemoglobin
    2.   globulin
    3.   albumin
    4.   chlorophyll
14. During photosynthesis plants
    1.   take oxygen and release carbon dioxide
    2.   take carbon dioxide and release oxygen
    3.   take carbon dioxide but do not release oxygen
    4.   take oxygen but do not release carbon dioxide
15. During photosynthesis
    1.   solar energy is converted into chemical energy
    2.   solar energy is converted into mechanical energy
    3.   chemical energy is converted into mechanical energy
    4.   bioenergy is converted into chemical energy
16. The raw materials for photosynthesis are
    1.   CO2
    2.   CO 2, O2, H2
    3.   N2 water
    4.   O2 water
17. Which one of the following is a parasite?
    1.   Lichen
    2.   Cuscuta
    3.   Pitcher plant
    4.   Rhizobium
18. Which of the following class of organisms belongs to saprotrophs?
    1.   fungi
    2.   algae
    3.   lichens
    4.   bryphytes
19. Which one of the following is a pair of symbiotic organisms?
    1.   Lichens
    2.   Rhizobium and a legume
    3.   None of these
    4.   Both (a) and (b)
20. All organisms take ……………… and utilize it to get energy for the growth and the maintenance of their
    bodies.
    1.   food
    2.   water
    3.   sunlight
    4.   oxygen