Which of the following is not a abiotic component of the ecosystem?

(a)

Bacteria

(b)

Humus

(c)

Organic compounds

(d)

Inorganic compounds

Pond is a type of ______.

(a)

forest ecosystem

(b)

grassland ecosystem

(c)

marine ecosystem

(d)

fresh water ecosystem

The following diagram represents

 

(a)

pyramid of number in a grassland ecosystem

(b)

pyramid of number in a pond ecosystem

(c)

pyramid of number in a forest ecosystem

(d)

pyramid of biomass in a pond ecosystem

Which of the following is not a sedimentary cycle

(a)

Nitrogen cycle

(b)

Phosphorous cycle

(c)

Sulphur cycle

(d)

Calcium cycle

Which group of organism occupies the third tropic level in an ecosystem?

(a)

Primary consumers

(b)

Secondary consumers

(c)

Secondary carnivores

(d)

Omnivores

If 1200 Joules of solar energy is trapped by producers, how much of Joules of energy does the organism in the third trophic level will receive?

(a)

120 Joules

(b)

12 Joules

(c)

1.2 Joules

(d)

0.12 Joules

Which one of the following is not a functional unit of an ecosystem?

(a)

Productivity

(b)

Stratification

(c)

Energy flow

(d)

Decomposition

The type of ecosystem with maximum net primary productivity is________

(a)

Desert ecosystem

(b)

Deciduous forest ecosystem

(c)

Tropical rain forest ecosystem

(d)

Grassland ecosystem

Complete the food chain by filling the link X:
Paddy ~ Grassopper ~ Frog ~ X ~ Hawk

(a)

King cobra

(b)

Gorilla

(c)

Rabbit

(d)

Tasmanial wolf

Lotic ecosystem refers to________

(a)

Open water ecosystem

(b)

Running water ecosystem

(c)

Standing water ecosystem

(d)

Ocean water ecosystem