Environment Science (Revision) -Grade-X

What is the study of interaction between living organisms and their physical environment called?

• Botany

• Zoology

• Ecosystem

• Ecology

Which one of the following is a biotic factor?

• Hydrilla

• Oxygen

• Light

• Both light and Oxygen

Identify the freshwater ecosystem from the following.

• Seas

• Ocean

• Seas and Ocean

• Lakes

Identify the marine ecosystem from the following.

• Sea

• Ocean

• Both sea and ocean

• Lake

In which ecosystem Oxygen is found in dissolved form?

• Water

• Land

• Desert

• Forest

Where do we find Lotic ecosystem?

• Pond

• Lake

• Swamp

• Stream

Where do we find lentic ecosystem?

• Waterfalls

• Pond

• River

• Stream

What percent of land in Nepal has flat land?

• 86%

• 14%

• 40%

• 30%

What percent of land is occupied by Nepal in global scale?

• 0.1%

• 1%

• 3%

• 1.1%

What is the favorable temperature of a work place?

• 25.5 degree Celsius

• 26.6 degree Celsius

• 25 to 26 degree Celsius

• 25.5 to 26.6 degree Celsius