Ncert Solutions for Class 7 Hindi Chapter 17 Study Rankers
Below you will find MCQ Questions of Chapter 17 Forests: Our Lifeline Class 7 Science Free PDF Download that will help you in gaining good marks in the examinations and also cracking competitive exams. These Class 7 MCQ Questions with answers will widen your skills and understand concepts in a better manner.
MCQ Questions for Class 7 Science Chapter 17 Forests: Our Lifeline with answers
1. Find the missing link Grass → insect → frog→______→eagle
(a) snake
(b) peacock
(c) crow
(d) lion
► (a) snake
2. Which of the following is not a forest product?
(a) Gum
(b) sealing wax
(c) play wood
(d) kerosene
► (d) kerosene
3. Floods can be controlled by
(a) constructing pits
(b) forests
(c) constructing temporary shelters
(d) By allowing water to flow into sea
► (b) forests
4. Mountains appear green due to
(a) Green coloured stone
(b) Absence of plants
(c) Presence of plants
(d) All of the above
► (c) Presence of plants
5. Forests are also called
(a) green lungs
(a) red kidney
(c) brown heart
(d) black skin
► (a) green lungs
6. Microorganisms produce ________ by acting upon the dead plants.
(a) wood
(b) humus
(c) mushrooms
(d) sand
► (b) humus
7. 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
8. Which one is not obtained from plants?
(a) Furniture
(b) Medicines
(c) Petrol
(d) Paper
► (c) Petrol
9. Process of loss of water in form of water vapour by plants is called
(a) Photosynthesis
(b) Transpiration
(c) Translocation
(d) Respiration
► (b) Transpiration
10. Environment and cool and peaceful in
(a) Town
(b) Village
(c) Metro
(d) Cities
► (b) Village
11. Reticulate venation is present in
(a) Grass
(b) Banana
(c) Mango
(d) All of the above
► (c) Mango
12. Which of the following is a medicinal plant?
(a) Cinchona
(b) Orange
(c) Mango
(d) Peepal
► (a) Cinchona
13. The male part of a flower is
(a) Pistil
(b) Sepals
(c) Stamen
(d) Ovary
► (c) Stamen
14. Process of eating and being eaten is called
(a) Food chain
(b) Food web
(c) Food nature
(d) Food habit
► (a) Food chain
15. 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.
16. Which one is obtained from forest?
(a) Petrol
(b) Plastics
(c) Kerosene
(d) Resins
► (d) Resins
17. Cutting of tree on large scale is called
(a) Urbanization
(b) Industrialization
(c) Deforestation
(d) Aforestation
► (c) Deforestation
18. Plants with soft stem are called
(a) Herbs
(b) Tree
(c) Tendril
(d) Shrubs
► (a) Herbs
19. If forests disappear
(a) Amount of CO2 in air will decrease
(b) Amount of CO2 in air will increase
(c) Amount of O2 in air will increase
(d) Amount of N2 in air will increase
► (b) Amount of CO2 in air will increase
20. Trees and vegetation act as wind breakers and prevents
(a) Dust storm
(b) Soil erosion
(c) Floods
(d) All of the above
► (b) Soil erosion
21. Microorganism that convert plants and animals dead parts into humus are called
(a) Producer
(b) Carnivores
(c) Herbivores
(d) Decomposer
► (d) Decomposer
22. Which part of the flowers turns into fruit?
(a) Anther
(b) Ovary
(c) Stigma
(d) Calyx
► (b) Ovary
23. Sound of birds and animals are
(a) In gardens
(b) In agricultural field
(c) Common in forests
(d) All of the above
► (c) Common in forests
24. Quinine is obtained from
(a) Pine tree
(b) Cinchona tree
(c) Neem tree
(d) Eucalyptus tree
► (b) Cinchona tree
25. Microorganisms act upon the dead plants to produce
(a) Humus
(b) Sand
(c) Mushroom
(d) Wood
► (a) Humus
26. Which of the following serve as green lungs?
(a) Kitchen gardens
(b) Forests
(c) Green pigments of the plants
(d) Greenhouse gases
► (b) Forests
27. Disappearance of forests will lead to increase in amount of carbon dioxide in air. It is likely to result in
(a) Eutrophication
(b) Global warming
(c) Deforestation
(d) Afforestation
► (b) Global warming
28. Branches of tall trees look like roof over the other plants in forest called
(a) Shadow
(b) Canopy
(c) Pines
(d) Conical
► (b) Canopy
Hope the given MCQ Questions will help you in cracking exams with good marks. These Forests: Our Lifeline MCQ Questions will help you in practising more and more questions in less time.
Ncert Solutions for Class 7 Hindi Chapter 17 Study Rankers
Source: https://www.studyrankersonline.com/140433/mcq-questions-for-class-7-science-chapter-17-forests-our-lifeline-with-answers
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