PPSC test preparation Biology MCQs part 1

PPSC test preparation Biology MCQs part 1

Source: 8 class science book

Choose the correct option.

(i) The phenomenon that does not lead to global warming: 

1. greenhouse effect
2. deforestation
3. ozone depletion 
4. photosynthesis

(ii). The feeding level of an organism in an ecosystem is called

1. tropic level 
2. food chain
3. secession level 
4. food Web

(iii). The graphical representation of trophic relationship of organisms in an ecosystem is called

1. tropic level 
2. food chain
3. ecological pyramid 
4. predation

(iv). All food chains are joined together to form 

1. tropic level 
2. food web
3. ecological pyramid 
4. none of these

(v).  The energy of the sun is trapped as chemical energy by 

1. producers
2. secondary consumers
3. primary consumers
4. tertiary consumers

(vi). Consumers that actively hunt other organisms are called

1. prey
2. symbiont
3. predator
4. competitor

(vii). A relationship where two species live together closely is called

1. predation
2. competition
3. symbiosis
4. none of these

(viii) We can solve environmental problems by: 

1. reducing pollution
2. protection of endangered species
3. plantation
4. all of these

(ix) Ecological imbalance is caused by: 

1. migration
2. overhunting 
3. overpopulation
4. all of these

(x) Changa manga is present in 

1. District Taunsa in Punjab
2. District Toba Tek Singh in Punjab
3. District Kasur in Punjab
4. District Sargodha in Punjab

Answers: 

(i). photosynthesis, (ii). tropic level (iii). ecological pyramid (iv). food web (v). predator (vi). symbiosis (vii). producers (viii). all of these (ix). all of these (x). District Kasur in Punjab