Class 7 Nutrition In Plants CBSE Questions & Answers

Class 7 · Nutrition In Plants

This is Science Class 7 Nutrition in Plants CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Animals are not able to prepare food using carbon dioxide, water and sunlight because
  • A
    Do not contain enzyme
  • B
    Live inside the shelter
  • C
    Chlorophyll is absent
    Correct
  • D
    Sunlight is absent inside the body
2
Which part of plant is known as ‘food factory’?
  • A
    Roots
  • B
    Leaves
    Correct
  • C
    Stems
  • D
    Branches
3
Transport of food prepared in leaves to other part of plant takes place through
  • A
    Trachieds of xylem
  • B
    Companion cells of phloem
  • C
    Vessels of xylem
  • D
    Sieve tube of phloem
    Correct
4
Which one is saprophytic organism?
  • A
    Algae
  • B
    Cuscuta
  • C
    Mushroom
    Correct
  • D
    Mango
5
Leaves of some plant are red, violet or brown; whether they carry on photosynthesis?
  • A
    During night.
  • B
    Some time
  • C
    No
  • D
    Yes
    Correct
6
Nitrogen is necessary for formation of protein. From where, plant obtain nitrogen?
  • A
    From soil in form of nitrite and nitrate
    Correct
  • B
    From nitrogen gas dissolve in water
  • C
    From soil in form of minerals
  • D
    From air in form of gaseous nitrogen
7
Molecular formula of glucose is
  • A
    \({{\text{C}}_{\text{6}}}{{\text{H}}_{{\text{22}}}}{{\text{O}}_{{\text{11}}}}\)
  • B
    \({{\text{C}}_{\text{6}}}{{\text{H}}_{{\text{12}}}}{{\text{O}}_{{\text{12}}}}\)
  • C
    \({{\text{C}}_{\text{8}}}{{\text{H}}_{{\text{12}}}}{{\text{O}}_{{\text{11}}}}\)
  • D
    \({{\text{C}}_{\text{6}}}{{\text{H}}_{{\text{1}}0}}{{\text{O}}_{{\text{11}}}}\)
    Correct
8
Which one is not an insectivore’s plant?
  • A
    Drosera
  • B
    Banana
    Correct
  • C
    Venus fly trap
  • D
    Bladderwort
9
Which one is not a mode of nutrition in non-green plants?
  • A
    Heterotrophic
  • B
    Saprophytic
  • C
    Autotrophic
    Correct
  • D
    Parasitic
10
Which kinds of plant fix the maximum amount of solar energy into chemical energy?
  • A
    Mesophytes
  • B
    Desert plants
  • C
    Aquatic plants
    Correct
  • D
    Terrestrial plants
11
Leaves of some plants are not green, either red or brown due to
  • A
    Presence of lipids
  • B
    Presence of fats
  • C
    Presence of other pigments
    Correct
  • D
    Absence of chlorophyll
12
Chlorophyll can convert
  • A
    Light energy into carbohydrate
  • B
    Light energy into food energy
  • C
    Light energy into chemical energy
    Correct
  • D
    Light energy into heat energy
13
In photosynthesis, oxygen released as by product is produced by
  • A
    Photolysis of water
    Correct
  • B
    Reduction of water
  • C
    Hydrolysis of carbon dioxide
  • D
    Oxidation of Carbon dioxide
14
Select the incorrect pair
  • A
    \({\text{C}}{{\text{O}}_{\text{2}}}\) - Atmosphere
  • B
    Water - Stem
    Correct
  • C
    Chlorophyll – Leaves
  • D
    Sunlight – Sun
15
Manure and fertiliser are added to field to increase the fertility as they contain
  • A
    Humus and pesticides
  • B
    Nitrogen and magnesium
  • C
    Nitrogen and other nutrients
    Correct
  • D
    Carbon and oxygen