Alternative possibilities

Q.

Write a note on the types of agriculture.

Q.

Converting plant and animal wastes into manure is called___.

Q.

Which fuels can be obtained by microbial processes?

Q. The technique of growing plants with just water and nutrients is known as ___________.

1. hydroponics
2. lithoponics
3. hydroplantation
4. aeroponics

Q. Select the correct option after reading the statements.
1. Crops like alfalfa are rotated along with certain cereals to ensure that the soil does not lose its fertility.
2. The roots of the alfalfa plant help in replenishing the fertility of the soil.

1. Both statements are correct, but Statement 1 and Statement 2 do not have any relation.
2. Statement 1 is true, but Statement 2 is not the correct explanation for Statement 1.
3. Both statements are invalid.
4. Statement 1 is true and Statement 2 is the correct explanation for Statement 1.

Q.

Converting plant and animal wastes into manure is called ___.

Q. To tackle the challenge of waste disposal, we must first segregate waste into _____ and wet waste.

1. dry waste
2. paper
3. plastic
4. bio-degradable

Q. Which of these crops can be used for the rotation of cereal crops?

1. Wheat
2. Alfalfa
3. Rice
4. Sugarcane

Q. Appu was advised by his farmer friend to practise crop rotation on his agricultural field periodically. Why should Appu practise crop rotation?

1. To manage the fertility of the soil
2. To increase soil erosion
3. To reduce soil erosion
4. To reduce the fertility of the soil

Q.

The remaining part of the sugarcane from which the juice has been extracted is called

1. Biogas

2. Residue

3. Waste

4. Bagasse

Q. Aishi wants to start farming but she doesn't have enough space to do so. Identify the farming technique from the following options which is suited for her.

1. Green house method
2. Plantation method
3. Vertical net farming
4. Hydroponics

Q. _____ plants can be used to collect bio-degradable waste to generate fuel.

1. Petrol
2. Diesel
3. LPG
4. Biogas

Q. _______ can be broken down into simpler parts by bacteria.

1. Plastic waste
2. Non-biodegradable
3. Wet waste
4. Dry waste

Q. _________ of crops refers to the practice of growing a series of different crops in the same area in seasons one after the other.

1. Rotation
2. Circling
3. Cycling
4. Revolution

Q. Hydroponics is a very successful alternative to traditional cultivation method.
Identify amongst the following, the major element in Hydroponics that supplies nutrients to the crops.

1. Only water
2. Mineral nutrients mixed in water
3. Soil
4. Only mineral nutrients