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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Oxygen is released in the process of

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

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

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

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