Ecosystem

In any food chain, the first trophic level is occupied by

• Herbivores

• Carnivores

• Producers

• Secondary consumers

Range of PAR wavelength is

• 200 - 400 nm

• 400 nm - 600 nm

• 600 nm - 800 nm

• 400 nm - 700 nm

It predicts

• Mineralisation

• Senescence

• Leaching

• 10% law

In a pond ecosystem, the pyramid of biomass is always inverted in shape, because

• The sunlight is more at bottom

• The producers are at bottom

• Primary consumers are absent

• Secondary consumers are absent

An abiotic component of an ecosystem, required by plants to perform photosynthesis

• sunlight

• water

• oxygen

• soil

It is common in

• Forest ecosystem

• Pond ecosystem

• Parasite ecosystem

• Grassland ecosystem

• Producers

• Consumers

• Omnivores

• Dead organic matter

"Pyrmids of energy is always upright"

• True

• False

Diagram represents

• Food chain

• Food web

• Decomposition stages

• Pyramid of biomass

Identify a Sedimentary bio-geochemical cycle

• Carbon cycle

• Oxygen cycle

• Nitrogen cycle

• Sulphur cycle