9th Biology Unit 18 Environmental Biology MCQs Sindh Board

On this Page you will learn Ninth Class Chapter No.18 Environmental Biology Solved Full Chapter MCQs With Solved Answers Quiz Test. If you are looking 9th Class Karachi Sindh Board Biology Chapter Wise Solved MCQs With Answers You are on this page right place. You will learn online here Objective type IX Class Biology Solved Unit 18 Most Repeated MCQs with Solved Answers Quiz Tests.

9th Environmental Biology MCQs

Q.1: Whole of the life sustaining area of earth?

1. Atmosphere
2. Biosphere
3. Lithosphere
4. Hydrosphere

B

Q.2: For its survival animal depends on?

1. Other animals
2. Physical environment
3. Plants
4. All

D

Q.3: Ecology is the study of?

1. Decomposers
2. Physical factors
3. Plants and animals
4. Interaction of all

D

Q.4: Green plants in an ecosystem are?

1. Consumers
2. Decomposers
3. Producers
4. None of these

C

Q.5: A lion in a food chain is?

1. Primary consumer
2. Tertiary consumer
3. Decomposer
4. Secondary consumer

B

Q.6: A crocodile is a?

1. Omnivore
2. Herbivore
3. Carnivore
4. Detrivore

C

Q.7: In a predator-prey relationship the animal killed is a?

1. Prey
2. Decomposer
3. Predator
4. Autotroph

A

Q.8: How much energy in a food is transferred to the next level??

1. A small amount
2. No energy at all
3. 50%
4. 100%

A

Q.9: In a pyramid of numbers the top level carnivores are?

1. Equal in number
2. Lowest in number
3. All levels
4. Highest in numbers

B

Q.10: Fishes in a pond ecosystem occupy which level?

1. Secondary consumer
2. Tertiary consumer
3. Primary consumer
4. All levels

C

Q.11: Mutualism is an association of two organisms in which?

1. Both are harmed
2. One is benefited
3. Both are benefited
4. One is Harmed

C

Q.12: All the members of a species that live in area make up?

1. Population
2. An ecosystem
3. A habitat
4. A community

C

Q.13: Habitat destruction can result in a loss of?

1. Ecosystem
2. Community
3. Land
4. Species

D

Q.14: Organism that make their own food with the help of sunlight, are called

1. Predators
2. Producers
3. Decomposers
4. Consumers

B

Q.15: The lowest tropic level of an ecosystem always includes?

1. Producers
2. Carnivores
3. Consumers
4. Herbivores

A

Q.16: A network of all feeding relationship in an ecosystem is called?

1. A food web
2. Energy flow
3. A food chain
4. A tropic level

A

Q.17: Sunlight, temperature, air and water are examples of?

1. Minerals resources
2. Abiotic factored
3. Nutrients
4. Biotic factors

B

Q.18: An organism that activity hunts other organisms is called?

1. Predator
2. Parasite
3. Consumer
4. Herbibore

A

Q.19: A relationship between species in which both species benefit is called?

1. Mutualism
2. Commensalism
3. Symbiosis
4. Parasitism

A

Q.20: If a disturbed ecosystem goes out of balance and can not return to a state of equilibrium, the species living there will?

1. Face no problem
2. Become extinct
3. Find new resource
4. Move to other places

B

Q.21: A community and its abiotic environment constitutes a?

1. Ecosystem
2. Food web
3. Habitat
4. Biosphere

A

Q.22: Which of the following process increases the amount of atmospheric carbon in the carbon cycle??

1. Cellular respiration
2. Photosynthesis
3. Both of them
4. None of them

C

Q.23: In the nitrogen cycle gaseous nitrogen is converted to ammonia by?

1. Nitrification
2. Nitrogen fixation
3. Assimilation
4. Ammonification

D

Q.24: Whole of the life sustaining area of earth?

1. Hydrosphere
2. Atmosphere
3. Lithosphere
4. Biosphere

D

Q.25: For its survival animal depends on?

1. Other animals
2. Physical
3. Plants
4. All

D