Interactions in ecosystem

Which of the following is a network of interconnected food chains ?

• Food web

• Ecosystem

• Pyramid

• Biomass

The pyramid for grassland ecosystem would always be

• inverted

• upright

• slanted

• horizontal

Which of the following organisms will not be a part of a food chain in a grassland ecosystem?

• Rabbit

• Deer

• Crocodile

• Zebra

In an ecosystem, the organisms which feed directly on plants are ____ in number than /to the plants in that ecosystem.

• greater

• lesser

• equal

• extremely small

The connections in the web represent the transfer of ______ with every meal

• energy

• food

• organisms

• ecosystem

The flow of energy from the sun to the plants is _______

• bidirectional

• unidirectional

• multidirectional

Organisms such as jelly fish and squids attract prey or scare off predator by a process called _____

• bioluminescence

• photosynthesis

• chemosynthesis

The oceans take up _____ through photosynthesis by phytoplankton .

• oxygen

• carbon dioxide

• sulphur

• ozone

The presence of _____ gas in the upper layers of the atmosphere protects us from the harmful ultraviolet rays of the Sun.

• oxygen

• ozone

• carbon dioxide

• nitrogen

_______ is the measure of dissolved inorganic salts in a waterbody or soil.

• salinity

• sweetness

• bitterness