Major Ecosystems MCQs

Average rainfall in temperate deciduous forests is 750-1500mm

The temperature of coniferous alpine and boreal forests is up to 10 degrees

Northern coniferous forests are called Taiga

Coniferous forests located at high latitude are alpine

Short-term fluctuations in temperature, cloud cover, wind and precipitation

It prevails over periods of hrs or days

Overall patterns of weather that prevail from year to year

Both a and b

Saltwater ocean and sea are the largest ecosystems on earth

Saltwater ecosystem covers about 75% earth surface

Freshwater ecosystem covers less than 1% of earth surface

Its temperature is more moderate to support life

Number of plants in that ecosystem

The density of that ecosystem

Consumption of carbon dioxide and evolve of oxygen

Both a and b

Limnetic zone

Littoral zone

Profundal zone

All of these

Plants are unable to anchor but enough light penetrates to support photosynthesis

Phytoplanktons in this region are cyanobacteria

Decomposers and detritus feeders inhabit it

Water lilies are abundant

The process of decreasing nutrients by human activities

Adequate nutrition accelerated by human activities

Changing the trophic levels of an ecosystem by human activities

Addition of more predators in an ecosystem

Fish

Crustaceans

Phytoplanktons

Blue-green algae

Hdrospheric ecosystem

Aquatic ecosystem

Terrestrial ecosystem

All of these

Providing support

Protection from enemies

Reducing water loss

Helping in food production