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
Which of the following nutrients can not be synthesised by plants?
  • A
    Fats
  • B
    Proteins
  • C
    Carbohydrates
  • D
    Water
    Correct
2
Select the correct pair.
  • A
    Algae - Heterotrophs
  • B
    Cuscuta - anaerobic
  • C
    Mushroom - Saprophytes
    Correct
  • D
    Yeast - aerobic
3
Which one is a symbiotic association between two organisms?
  • A
    Nostoc
  • B
    Amarbel
  • C
    Mucor
  • D
    Lichens
    Correct
4
Pitcher plant: insectivores:: mushroom : ?
  • A
    Omnivores
  • B
    Saprophytes
    Correct
  • C
    Host
  • D
    Parasite
5
Plants obtain carbon dioxide from atmosphere but not the nitrogen because
  • A
    Nitrogen is present in less quantity
  • B
    Nitrogen is inert and insoluble in water
    Correct
  • C
    Nitrogen is present in diatomic form
  • D
    Nitrogen easily dissolve in water
6
Carbohydrates produced in the process of photosynthesis is converted into
  • A
    Protein
  • B
    Starch
    Correct
  • C
    Glucose
  • D
    Sugar
7
More stomata are found on the lower surface of leaves because
  • A
    More light fall on upper surface than lower surface
    Correct
  • B
    To increase the rate of respiration
  • C
    To increase the rate of transpiration
  • D
    Less light fall on upper surface than upper surface
8
Pitcher plants have green leaves that perform photosynthesis, than why pitcher plant intake insect?
  • A
    To obtain ready made carbohydrates
  • B
    To get protein
  • C
    To obtain glucose
  • D
    To obtain nitrogen
    Correct
9
Which bacteria convert atmospheric nitrogen into soluble form?
  • A
    Rhizobium
    Correct
  • B
    Lactobacillus
  • C
    Methanogen
  • D
    Spirullum
10
Leguminous plant: Gram:: ? : Saprophytes.
  • A
    Rhizobium
  • B
    Fungi
    Correct
  • C
    Yeast
  • D
    Pea
11
Rhizobium, present in the root nodules of leguminous plant convert atmospheric nitrogen into
  • A
    Nitrogen sulphide
  • B
    Nitrogen dioxide
  • C
    Ammonium
  • D
    Nitrate and nitrite
    Correct
12
Which one is not an activity of fungi?
  • A
    Preparing food from inorganic substance
    Correct
  • B
    Causing disease in plants and animals
  • C
    Spoiling food
  • D
    Preparing antibiotics
13
Herbivores are -------------- eating animals.
  • A
    Plants
    Correct
  • B
    Symbiotic
  • C
    Insect
  • D
    Flesh
14
Plant do not store carbohydrates as glucose but do as starch because glucose
  • A
    Attracts herbivores
  • B
    Is unstable
  • C
    Alters osmotic balance
    Correct
  • D
    Will change nucleic acid
15
Rate of photosynthesis is
  • A
    Equal to rate of respiration
  • B
    Depends upon chlorophyll content.
  • C
    Less than rate of respiration
  • D
    Faster than that of respiration
    Correct