Homework Practice

Printable assignment

Final Assessment: Forests: Our Lifeline

Section A: Key Concepts

Question 1mcq

How do forests help prevent soil erosion?

A.Tree roots hold soil and leaf cover reduces raindrop impact.

B.Trees push soil into rivers.

C.Forests remove all soil organisms.

D.Leaves make soil lighter so it flies away.

Question 2mcq

Why are forests called natural air purifiers?

A.Trees produce only smoke.

B.Plants absorb carbon dioxide and release oxygen during photosynthesis.

C.Forests remove all oxygen.

D.Animals in forests make no gases.

Question 3mcq

How can forests reduce flooding?

A.They make rain fall upward.

B.They block all rivers with mirrors.

C.They slow runoff and help water seep into the ground.

D.They prevent clouds from forming.

Question 4mcq

Which effect links forests with local rainfall and climate?

A.Leaves convert clouds into rocks.

B.Roots release petrol.

C.Animals stop evaporation completely.

D.Transpiration adds water vapour to the air.

Question 5mcq

A hillside forest is cleared. What problem is likely during heavy rain?

A.Increased soil erosion and runoff

B.Instant formation of humus everywhere

C.Less chance of landslides always

D.No change in water movement.

Question 6mcq

What is deforestation?

A.Growth of more forest plants

B.Large-scale removal of forests

C.Formation of humus from leaves

D.Pollination by insects

Section B: Applications

Question 7mcq

Which is a direct effect of deforestation on wildlife?

A.More natural shelter always

B.Increase in every species equally

C.Loss of habitat

D.No change in food availability.

Question 8mcq

Why can deforestation increase atmospheric carbon dioxide?

A.Trees normally produce petrol.

B.Soil stops containing minerals.

C.Mirrors reflect less light.

D.Fewer trees absorb carbon dioxide by photosynthesis.

Question 9mcq

A forest is cleared for farming on a slope. Which risk increases most?

A.Soil erosion

B.Seed dispersal by birds always increases

C.Groundwater becomes unlimited

D.All pests disappear permanently.

Question 10mcq

Which statement is a misconception about deforestation?

A.It can reduce habitats.

B.It affects only trees, not animals or soil.

C.It can increase erosion.

D.It can disturb food chains.

Question 11mcq

Which action helps protect forests?

A.Burning leaf litter everywhere

B.Dumping plastic in forest streams

C.Planting native trees and preventing illegal cutting

D.Removing all decomposers.

Question 12mcq

Why is reducing paper waste connected to forest conservation?

A.Paper is made only from plastic.

B.Paper waste increases oxygen directly.

C.Using more paper protects forests.

D.Less demand for paper can reduce pressure on trees.

Section C: Observations and Data

Question 13mcq

Which conservation step is best after a forest fire damages an area?

A.Protect the area and support regeneration with suitable species

B.Immediately build more roads through it

C.Remove all remaining soil

D.Introduce only concrete structures.

Question 14mcq

How can local communities help forest conservation?

A.Cut young trees secretly

B.Report illegal cutting and use forest resources responsibly

C.Hunt all seed-dispersing animals

D.Throw waste into forest streams.

Question 15mcq

Which option is not forest conservation?

A.Creating protected areas

B.Controlling forest fires

C.Clearing forest for unnecessary dumping

D.Planting native trees

Question 16mcq

If a predator is removed from a forest food web, what may happen?

A.All plants immediately die in one day.

B.Food webs become simpler and always healthier.

C.Decomposers stop needing dead matter.

D.Some prey populations may increase and disturb balance.

Question 17mcq

A forest stream becomes muddy after trees are cut nearby. What is the best explanation?

A.Less root cover caused more soil erosion into the stream.

B.Water became magnetic.

C.Fish produced soil particles.

D.Sunlight changed into mud.

Question 18mcq

Which data would best show whether a forest restoration project is working?

A.Colour of school bags nearby

B.Number of native seedlings surviving and soil erosion levels

C.Number of mirrors in houses

D.Speed of vehicles outside the forest only

Section D: Reasoning Challenge

Question 19mcq

A forest has fewer decomposers after pollution. What is a likely effect?

A.Trees get unlimited nutrients instantly.

B.Food chains stop needing producers.

C.Nutrient recycling slows and leaf litter builds up.

D.Rainwater cannot fall.

Question 20mcq

Which decision best protects both people and forests?

A.Ban all local people without alternatives and allow illegal cutting

B.Cut all trees now and plant later only if needed

C.Ignore forest fires because forests always recover instantly.

D.Allow controlled sustainable use while protecting key habitats

Question 21mcq

A forest loses many seed-dispersing birds. What long-term change is possible?

A.Fewer new plants of some species may grow in distant places.

B.All trees instantly become taller.

C.Soil erosion must become zero.

D.Decomposers become producers.

Question 22mcq

Why does forest soil often absorb rain better than bare compacted ground?

A.Trees make water avoid soil.

B.Roots, leaf litter and humus improve infiltration.

C.Bare ground has more humus always.

D.Forests are made of plastic.

Question 23mcq

Which missing organism completes this chain: leaves

ightarrow

ightarrow

snake?

A.Rock

B.Sunlight

C.Grasshopper

D.Humus only

Question 24mcq

Which student action best supports forests indirectly?

A.Waste paper after one line

B.Buy wooden items without checking source

C.Throw plastic into forest paths.

D.Use both sides of paper before recycling it.