Class 7 Forests Our Lifeline CBSE Questions & Answers

Class 7 · Forests Our Lifeline

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

Questions & Answers

1
All organisms whether carnivores or herbivores get their food from
  • A
    Autotrophs
    Correct
  • B
    Cow
  • C
    Animals
  • D
    Hen and goat
2
In a forest
  • A
    No food chain operates
  • B
    Many food chain operates
    Correct
  • C
    Either one or no food chain
  • D
    Single food chain operates
3
In most of the food chain first organism is always
  • A
    Autotrophs
    Correct
  • B
    Heterotrophs
  • C
    Carnivores
  • D
    Omnivores
4
In a food chain, no of producer is always
  • A
    Less than carnivores
  • B
    More than consumer
    Correct
  • C
    Less than consumer
  • D
    Equal to consumer
5
Mushroom and other micro-organism feed on
  • A
    Dead and decaying matter
    Correct
  • B
    Food from the animals
  • C
    Soil nutrients
  • D
    Food from plants
6
The micro-organism that convert dead and decaying plants into humus are called
  • A
    Consumers
  • B
    Weathering
  • C
    Producers
  • D
    Decomposer
    Correct
7
The composition of oxygen and carbon dioxide remain constant in spite of respiration by animals due to
  • A
    All of these
  • B
    Respiration by plants
  • C
    Transpiration by plants
  • D
    Photosynthesis by plants
    Correct
8
Forest help in water cycle also because they
  • A
    Release water vapour during transpiration and respiration
    Correct
  • B
    Absorbs water during ascent of sap
  • C
    Release water during translocation
  • D
    Release water vapour during photosynthesis
9
Presence of some animals in the forest is identified by their
  • A
    Food and shelter
  • B
    Drooping and footprints
    Correct
  • C
    Smell and footprints
  • D
    Prey and predators
10
Larger number of herbivores means
  • A
    Less availability of food for carnivores
  • B
    More availability of food for carnivores
    Correct
  • C
    More availability of oxygen
  • D
    More availability of water
11
pick the option which gives the names of a tree and an animal ,respectively from the following
  • A
    chinkara ,blue bull
  • B
    Semal , hornbill
    Correct
  • C
    Neem , palash
  • D
    sal , khair
12
Forest act as natural absorber of rain water because it
  • A
    Allow it to flow through
  • B
    Allow roots to absorb water
  • C
    Allow it to seep
    Correct
  • D
    Allow it to go to rivers
13
which of the product is not obtained from a forest?
  • A
    Honey
  • B
    Gum
  • C
    Catechu
  • D
    Ginger
    Correct
14
Planting of tree is done near the highways to
  • A
    Reduce noise pollution
    Correct
  • B
    Bringing rain
  • C
    Protecting from sunlight
  • D
    Recycling of water
15
The closed canopy and many layers of vegetation
  • A
    Increase the speed of raindrops
  • B
    Increase the animals movement
  • C
    Slow down the speed of raindrops
    Correct
  • D
    Slow down the animals movement