Nitrogen

Phosphorus

Potassium

Hydrogen

Placing neem leaves on both sides of the bags

Spraying acid on the bags of grains

Spraying water on one side of each bag

Placing dry ice between the bags

Egg

Fish

Chicken

All of the above

Crop rotation

Irrigation

Cropping pattern

All of the above

Macronutrients are the nutrients required by plants in large amount.

Micronutrients are the nutrients required by plants in small amount.

Plant nutrients and organic matter in soil can be decreased by adding manures and fertilisers to the soil.

Nutrients are supplied to plants by water, air and soil.

By sucking food and water from plant bodies

By cutting roots, stems and leaves of plants

By getting into fruits and destroying them

All of the above

eggs

pearls

salts

shells

Hybridisation refers to the crossing between genetically dissimilar plants.

Crossing between two different species of the same genus is called inter specific.

Crop production can be decreased by biotic and abiotic stresses under different situations.

None of these

Cow

Buffalo

Sahiwal

None of these

Catlas

Grass carps

Common carps

Mrigals

It cannot be easily made by using animal and plant waste.

Organic matter in manure helps in increasing the water holding capacity of sandy soil.

It is good for long term soil fertility.

In clayey soils, the organic matter in manure helps in drainage and in avoiding water logging.

Maintenance of temperature in housing

Hygienic conditions in housing

Prevention and control of diseases and pests

All of the above

Buffalo

Red Sindhi

Bos bubalis

Cow

Millets

Ground nut

Wheat

Maize

Both (i) and (ii)

Both (iii) and (iv)

Both (i) and (iii)

Both (ii) and (iv)