Forestry

Shark and sucker fish-commensalism

Algae and fungi in lichens-parasitism

Orchids growing on trees-epiphytism

Cuscuta (doder) growing on other flowering plants-epiphytism

Intercropping

Strip cropping

Rotation cropping

All of the above

A tending operation done seedling crop involving

The “removal or cutting back of any sort of weed growth, even woody, i.e. Interfering in growth of plant”.

Both (a) & (b)

None of these

1973

1974

1975

1976

5m

6m

7m

8m

Algae

Bacteria

Higher plants

Man

1880

1890

1900

1910

Lithosphere

Hydrosphere

Atmosphere

All of the above

Upright

Inverted

Any of the two

None of the above

From alpine pastures in the northern mountains to temperate

Mediterranean ranges in the western mountains

Arid and semi-arid desert ranges in the Indus plain

All of the above