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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Oxygen is released in the process of

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

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