MCQ Questions for Class 7 Science: Ch 17 Forests - Our Lifeline
1. Which industry totally depends upon forest product?
(a) Agriculture
(b) Rubber industry
(c) Furniture industry
(d) Textile industry
► (c) Furniture industry
2. Which of the following is not a forest product?
(a) Rubber
(b) Sealing wax
(c) Kerosene
(d) Plywood
► (c) Kerosene
3. Environment and cool and peaceful in
(a) Town
(b) Village
(c) Metro
(d) Cities
► (b) Village
4. Which is not a function of forest?
(a) Water cycle
(b) Balancing oxygen and carbon dioxide
(c) Wild life habitat
(d) Formation of soil
► (d) Formation of soil
5. Which of the following is a medicinal plant?
(a) Cinchona
(b) Orange
(c) Mango
(d) Peepal
► (a) Cinchona
6. A tree species in Mauritius failed to reproduce because of extinction of a fruit eating bird. The bird was
(a) Condor
(b) Dodo
(c) Dove
(d) Skua
► (b) Dodo
7. The male part of a flower is
(a) Pistil
(b) Sepals
(c) Stamen
(d) Ovary
► (c) Stamen
8. Microorganisms produce ________ by acting upon the dead plants.
(a) wood
(b) humus
(c) mushrooms
(d) sand
► (b) humus
9. Microorganism that convert plants and animals dead parts into humus are called
(a) Producer
(b) Carnivores
(c) Herbivores
(d) Decomposer
► (d) Decomposer
10. An animal which feeds on dead organisms is a
(a) scavenger
(b) first level carnivore
(c) second level carnivore
(d) parasite
► (a) scavenger
11. Reticulate venation is present in
(a) Grass
(b) Banana
(c) Mango
(d) All of these
► (c) Mango
12. Mountains appear green due to
(a) Green coloured stone
(b) Absence of plants
(c) Presence of plants
(d) All of these
► (c) Presence of plants
13. Quinine is obtained from
(a) Pine tree
(b) Cinchona tree
(c) Neem tree
(d) Eucalyptus tree
► (b) Cinchona tree
14. Which of the following is incorrect?
(a) The tropical rain forests support a wide variety of plants and animals.
(b) We find animals such as ape, bird Toucan, red eyed frogs etc. in the regions of tropical rain forests.
(c) The temperature range in the areas of tropical rain forests is15−40°C.
(d) None of the above is incorrect.
► (c) The temperature range in the areas of tropical rain forests is15−40°C.
15. Identify the wrong statement.
(a) soil helps forests to grow and regenerate
(b) forests influence climatic and water cycle.
(c) forest protect the soil from erosion
(d) plants and animals in a forest are not dependent on each other.
► (d) plants and animals in a forest are not dependent on each other.
16. Floods can be controlled by
(a) constructing pits
(b) forests
(c) constructing temporary shelters
(d) By allowing water to flow into sea
► (b) forests
17. A forest consists of
(a) animals
(b) plants
(c) floor converted with dead and decaying matter
(d) All of the above
► (d) All of the above
18. Trees and vegetation act as wind breakers and prevents
(a) Dust storm
(b) Soil erosion
(c) Floods
(d) All of these
► (b) Soil erosion
19. Find the missing link Grass→insect→frog→______→eagle
(a) snake
(b) peacock
(c) crow
(d) lion
► (a) snake
20. Humus is produced due to
(a) Pollination of flower
(b) Decomposition of dead animals
(c) Fertilization of flower
(d) Decomposition of dead plants
► (d) Decomposition of dead plants
21. The cricket bats are made out of wood of which of the following?
(a) Sal
(b) Rose wood
(c) Teak
(d) Willow
► (d) Willow
22. Some herbs and plants that were used in ancient times for making drugs and are even now used for the same purpose. Which of the following is not one of these?
(a) Marigold
(b) Foxglove
(c) Belladona
(d) The plant of castor oil
► (a) Marigold
23. At high altitude, Himalaya have dense forest of
(a) Mango
(b) Cycas
(c) Pines
(d) Cactus
► (c) Pines
24. Mushrooms eat ______
(a) rice
(b) wax
(c) humus
(d) wheat
► (c) humus
25. Cutting of tree on large scale is called
(a) Urbanization
(b) Industrialization
(c) Deforestation
(d) Aforestation
► (c) Deforestation