Ecosystem concept

Primary consumers in the detritus food chain are

• Herbivores

• Bacteria and fungi

• Insect Larva, nematodes

• All the above

Total organic matter present in an ecosystem is called

• Biomass

• Biome

• Litter

• Food

Putrefying organisms are

• Producer organisms

• Reducer organisms

• Consumer organisms

• Parasitic organisms

The most important organisms for an ecosystem are

• Herbivorous

• Carnivorous

• Green plants

• Protozoa

A peacock eats snakes which eat frog these eat hoppers which in turn thrive on leaves of the plants, the peacock is

• Primary consumer

• Secondary consumer

• Decomposer

• Apex of the food pyramid

A food chain consists of

• Producers

• Consumers

• Decomposers

• Producers and Consumers

Food chain always starts with

• Photosynthesis

• Respiration

• Nitrogen fixation

• Decay

Which of the food chain directly depends on solar radiations?

• Predator

• Grasses

• Detritus

• None of these

Grassland of USA is referred to as

• Prairie

• Steppes

• Pampas

• Veldts

When a big fish eats a small fish which eats water fleas supported by phytoplankton water fleas are

• Producers

• Primary consumers

• Secondary consumers

• Top consumers