..........is a primary consumer.

............is an important component of proteins and nucleic acids.

Find the odd man out: Nitrogen cycle, oxygen cycle, carbon cycle, phosphorus cycle.

An intricate network of food chains is called...............

Find the odd man out: Grasshopper, squirrel, elephant, lion

Flow of energy in an ecosystem is............ .

Find the odd man out: Burning of fossil fuels, forest fire, respiration, volcanic activity.

Carbon dioxide is released into the atmosphere through ............. .

Tiger is a /an.......... .

Oxygen forms ......... of the atmosphere.

Find the odd man out: Frog, Owl, Squirrel, Fox

Fungi and other microbes are called..........

............. is a sedimentary cycle.

Most organisms cannot use the free form of ................. .

.......... is a secondary consumer.

Find the odd man out: Photosynthesis, Nitrification, Ammonification, Denitrification.

Microbes which do not need oxygen are called...........

Oxygen is released in the process of

Amount of matter and energy .............. from the lowest level to the highest level.

The Indian Institute of Ecology and Environment, Delhi, has published........... .

.................. irst proposed the concept of Ecological Pyramid in 1927.

Plants convert carbon dioxide into .......... by the process of photosynthesis.

Ecological Pyramid is called............

The pattern of energy exchange in an ecosystem is called a ............... .

............ is the most important source of energy in any ecosystem.

Carbon atoms are circulated and recycled through ............ .

............. cycle is a gaseous cycle

Find the odd man out: Photosynthesis, combustion, decomposition, corrosion.

Conversion of ammonia into a nitrite and then nitrate is called..........

Conversion of nitrogen compounds into gaseous nitrogen is called........ .