Students are advised to practice the NCERT MCQ Questions for Class 7 Science Chapter 17 Forests: Our Lifeline with Answers Pdf free download is available here. MCQ Questions for Class 7 Science with Answers are prepared as per the Latest Exam Pattern. Students can solve these Forests: Our Lifeline Class 7 MCQs Questions with Answers and assess their preparation level.
Forests: Our Lifeline Class 7 MCQs Questions with Answers
Solving the Forests: Our Lifeline Multiple Choice Questions of Class 7 Science Chapter 17 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Forests: Our Lifeline Class 7 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 17 Science Class 7 and cross-check your answers during preparation.
Question 1.
The rainfall will be less in absence of:
(a) forests
(b) town
(c) village
(d) none of these
Answer
(a) forests
The rainfall will be less in absence of forests.
Question 2.
Which of the following is not a forest product:
(a) gum
(b) polywood
(c) sealing wax
(d) kerosene
Answer
(d) kerosene
Kerosene is not a forest product.
Question 3.
Which of the following statements is not correct:
(a) forests protect the soil from erosion.
(b) plants and animals in a forest are not depend on one another
(c) forests influence the climate and water cycle
(d) soil helps forests to grow and regenerate.
Answer
(b) plants and animals in a forest are not depend on one another
Plants and animals in a forest are not depend on one another.
Question 4.
Micro-organisms act upon the dead plants to produce:
(a) sand
(b) mushrooms
(c) humus
(d) wood
Answer
(c) humus
Micro-organisms act upon the dead plants to produce humus.
Question 5.
A dark coloured substance which is formed from the dead bodies of plants and animals is called:
(a) plants roots
(b) humus
(c) canopy
(d) none of these
Answer
(b) humus
Micro-organisms feed upon the dead plant and animal tissues and convert them into a dark coloured substance called humus.
Question 6.
The insects butterflies help flowering plant in:
(a) deforestation
(b) pollination
(c) humus
(d) none of these
Answer
(c) humus
The insects, butterflies help flowering plants in pollination.
Question 7.
A forest is a purifier of:
(a) water
(b) air
(c) both (a) and (b)
(d) none of these
Answer
(a) water
A forest is a purifier of water and air.
Question 8.
Branchy part of a tree above the stem is known as the:
(a) crown
(b) canopy
(c) humus
(d) all the above
Answer
(c) humus
Branchy part of a tree above the stem is known as the crown.
Question 9.
Cutting and destroying the forests is called:
(a) erosion
(b) decomposers
(c) deforestation
(d) all the above
Answer
(b) decomposers
Cutting and destroying the forests is called deforestation.
Question 10.
The branches of the tall trees look like a roof over the other plants in the forest is called a:
(a) humus
(b) canopy
(c) crown
(d) none of these
Answer
(d) none of these
Canopy is the branches of the tall trees look like a roof over the plants.
Question 11.
The plant also maintain the balance of oxygen and carbon dioxide in the atmosphere, so the forests are called:
(a) heart
(b) skin
(c) kidney
(d) lungs
Answer
(d) lungs
The plant also maintain the balance of oxygen and carbon dioxide in the atmosphere, so the forests are lungs.
Question 12.
Forests protect the soil from:
(a) growth
(b) humus
(c) pollination
(d) erosion
Answer
(b) humus
Forests protect the soil from erosion.
Question 13.
Heavy rain may also damages the:
(a) roots
(b) soil
(c) humus
(d) none of these
Answer
(a) roots
Heavy rain fall, may also damages the soil.
Question 14.
Several beetles and grubs were feeding on the heap and a bunch of seedlings was:
(a) sprouting
(b) decomposing
(c) pollination
(d) all of these
Answer
(a) sprouting
Several beetles and grubs were feeding on a heap and a bunch of seedlings was sprouting.
Question 15.
Canopy is formed by:
(a) small trees
(b) herbs
(c) shurbs
(d) tall trees
Answer
(b) herbs
Canopy is formed by tall trees.
Question 16.
Interdependence of animals for food is called:
(a) food order
(b) food cycle
(c) food chain
(d) none of these
Answer
(c) food chain
Interdependence of animals for food is called food chain.
Question 17.
Nutrients are replenished in the soil through:
(a) water
(b) plant roots
(c) humus
(d) all of these
Answer
(c) humus
Nutrients are replenished in the soil through humus.
Question 18.
Which of the following is renewable resources:
(a) forest
(b) town
(c) village
(d) none of these
Answer
(a) forest
Forests is a renewable natural resources.
Question 19.
Forest protect soil from:
(a) erosion
(b) flooding
(c) spoiling
(d) all the above
Answer
(d) all the above
Forest protect soil from erosion, flooding and spoiling.
Question 20.
Micro-organisms eating dead bodies of plants and animals are called:
(a) scavengers
(b) herbivores
(c) decomposers
(d) none of these
Answer
(c) decomposers
Micro-organisms eating dead bodies of plants and animals are decomposers.
Question 21.
Small trees and grass and shrubs form the:
(a) canopy
(b) lowest canopy
(c) under storeys
(d) all of these
Answer
(c) under storeys
Small trees and grass and shrubs form the under storeys.
Question 22.
Organisms which cannot be seen with naked eyes are called:
(a) macro-organisms
(b) decomposers
(c) insects
(d) micro-organisms
Answer
(d) micro-organisms
Micro-organisms cannot be seen with naked eyes.
Question 23.
Plants given out during photosynthesis:
(a) oxygen
(b) carbon dioxide
(c) humus
(d) microorganism
Answer
(a) oxygen
Plants given out oxygen during photosynthesis.
Match the Column A with Column B:
Question 1.
| Column-A | Column-B |
| (a) Canopy | (i) under storyes |
| (b) Forest | (ii) oxygen |
| (c) Plants gives out | (iii) renewable resources |
| (d) Small trees | (iv) tall and giant trees |
Answer
| Column-A | Column-B |
| (a) Canopy | (iv) tall and giant trees |
| (b) Forest | (iii) renewable resources |
| (c) Plants gives out | (ii) oxygen |
| (d) Small trees | (i) under storyes |
State the following statements are True or False:
Question 1.
Forest protect the soil from erosion.
Answer
True
Question 2.
Plant and animals in a forest are not dependent on one another.
Answer
False
Question 3.
Forests influence the climate and water cycle.
Answer
True
Question 4.
Soil helps forests to grow and regenerate.
Answer
True
Question 5.
Micro organism act upon the dead plants to produce humus.
Answer
True
Question 6.
Tall and giant trees constitute canopy in forests.
Answer
True
Question 7.
Humus is found in the ground layer of soil.
Answer
False
Question 8.
Plants gives out carbon dioxide during photosyntheses.
Answer
False
Question 9.
Inter dependence of animals food is called food order.
Answer
False
Question 10.
Nutrients are replenished in the soil through plant roots.
Answer
False
Question 11.
If forests disappear, the amount of CO2 in air will increase, resulting in the increase of earth’s temperature.
Answer
True
Question 12.
Insects cannot be seen with naked eyes.
Answer
False
Fill in the blanks:
Question 1.
We get spices from ……………….
Answer
Forest
Question 2.
Plants help to provide oxygen for animal ……………….
Answer
respiration
Question 3.
Two decomposers are ………………. and ……………….
Answer
beetles, grubs
Question 4.
The roots of trees absorb the water, this helps in preventing ……………….
Answer
floods
Question 5.
Honey bee and birds help flowering plants in ……………….
Answer
pollination
Question 6.
A forest is ………………. of water and air.
Answer
purifier
Question 7.
The decaying leaves and animal droppings in a forest enrich the ……………….
Answer
soil as humus
Question 8.
Herb form the ………………. layer in forest.
Answer
ground.
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