Ecosystem MCQs with Answers

According to IUCN, what percentage of nearly 5000 known species of mammals are threatened?

• A.10%
• B.35%
• C.50%
• D.20%

Animals that eat the primary consumers are called?

• A.Producers
• B.Secondary Consumers
• C.Decomposers
• D.Tertiary Consumers

Minimum biodiversity is found in _?

• A.Tropical rainforests
• B.Wetlands
• C.Coral reefs
• D.Deserts

Wildlife generally refers to all species of _?

• A.Animals
• B.Plants
• C.Microorganisms
• D.All of these

The basic assumption of restoration ecology while restoring a degraded ecosystem is that ?

• A.Degraded ecosystems must be replaced entirely with artificial habitats
• B.Environmental damage is completely irreversible
• C.Ecosystems recover only through natural succession without human intervention
• D.Environmental damage is partly reversible

The attempt of two or more organisms to utilize the same resource is called ?

• A.Competition
• B.Predation
• C.Mutualism
• D.Commensalism

We could destroy the Dengue Mosquito by introducing a special Mosquito Eating in the water bodies.

• A.Fish
• B.Frog
• C.Turtle
• D.Crab

A symbiotic relationship in which one member benefits and the second member is neither helped nor harmed is called ?

• A.Mutualism
• B.Commensalism
• C.Parasitism
• D.Amensalism

Past Paper MCQ

How many mammal species are found in Pakistan?

• A.174
• B.195
• C.210
• D.156

The rate of decomposition of plants and animals is lowest in which of the following habitats?

• A.Tropical rainforest
• B.Grassland
• C.Desert
• D.Freshwater swamp