Irrigation

Q.

What is Rahat irrigation?

Q. Question 11
Complete the following word puzzle with the help of clues given below.
Down
1. Providing water to the crops.
2. Keeping crop grains for a long time under proper conditions.
5. Certain plants of the same kind grown on a large scale.
Across
3. A machine used for cutting the matured crop.
4. A rabi crop that is also one of the pulses.
6. A process of separating the grain from the chaff.

Q.

Name the various agricultural practices in the right sequence in which they are undertaken by the farmers.

Q.

Explain why, the frequency of irrigation of crops is higher in summer season.

Q.

(a) What is irrigation ? Why is irrigation necessary ?

(b) Name the various sources of irrigation in our country.

Q. Why do plants need water?

1. They require water for germination
2. Nutrients required by plants are water soluble
3. Plants need water for mineral nutrition
4. All of these

Q. Match the following.​
$\begin{array}{cccc}& \text{Column I}& & \text{Column II}\\ \text{A.}& \text{Rahat}& I& \text{Manual labour to pull bucket attached to a wooden beam}\\ \text{B.}& \text{Dhekli}& II& \text{Farmer rotates a wheel to collect water}\\ \text{C.}& \text{Chain Pump}& III& \text{Cattle rotate a wheel attached to another wheel with buckets.}\end{array}$

1. A: I; B: II; C: III
2. A: III; B: I; C: II
3. A: III; B: II; C: I
4. A: II; B: III; C: I

Q.

Raisins swell when put in

1. Rain water

2. Tap water

3. Saturated sugar solution

4. Mustard oil

Q. Match the following.​
$\begin{array}{cccc}& \text{Column I}& & \text{Column II}\\ \text{A.}& \text{Rahat}& I& \text{Manual labour to pull bucket attached to a wooden beam}\\ \text{B.}& \text{Dhekli}& II& \text{Farmer rotates a wheel to collect water}\\ \text{C.}& \text{Chain Pump}& III& \text{Cattle rotate a wheel attached to another wheel with buckets.}\end{array}$

1. A: II; B: III; C: I
2. A: III; B: I; C: II
3. A: III; B: II; C: I
4. A: I; B: II; C: III

Q. How is water useful for plants?

1. Provides protection from frost
2. Provides protection from hot currents
3. Helps in conduction of nutrients
4. Kills harmful plant bacteria

Q. Why is sprinkler irrigation useful for Sandy soil and uneven lands where sufficient water is not available?

Q. Describe the method of irrigation system which is a boon in water-scarce places.

Q.

An implement used in removing weeds physically by uprooting or cutting them close to the ground is called ___.

1. seed drill

2. khurpi

3. hoe

4. axe

Q.

A student lists the following agricultural practices for crop production :

Irrigation ; Removal of weeds ; Preparation of soil ; Storage of food grains ; Sowing ; Adding manure and fertilisers

Which agricultural practice is missing from the above list ?

Q. Select the method(s) of irrigation which can be employed in an uneven land.

1. Moat
2. Sprinkler
3. Chain Pump
4. Drip System

Q.

Explain how, the irrigation requirements of a crop depend on the nature of soil in which the crop is grown.

Q. Which of the following is not a traditional irrigation method?

1. Chain pump
2. Yatam
3. Drip system
4. Moat

Q.

Name one crop which can tolerate standing water (water-logging) in the field and one which cannot.

Q.

What are irrigation and its methods?

Q. What are stubbles? How do farmers get rid of the stubbles?

Q. Question 11
Complete the following word puzzle with the help of clues given below.
Down
1. Providing water to the crops.
2. Keeping crop grains for a long time under proper conditions.
5. Certain plants of the same kind grown on a large scale.
Across
3. A machine used for cutting the matured crop.
4. A rabi crop that is also one of the pulses.
6. A process of separating the grain from the chaff.

Q.

How do the irrigation requirements of a wheat crop differ from that of a paddy crop ?

Q. Water is essential for plants as they can absorb nutrition that's only dissolved in water.

1. False
2. True

Q.

90 percent of a plant body is made up of:

1. starch

2. water

3. carbon dioxide

4. nitrogen

Q. What are the advantages of drip irrigation system?

1. Water directly reaches the roots of the plants.
2. Drip irrigation method saves 30 to 70 percent water.
3. Cultivation in saline and alkaline soil also can be done by this method.
4. All of the above.

Q. Which among the following irrigation methods is most feasible and sustainable?

1. Sprinkler system
2. Drip system
3. Chain pump
4. Canals

Q. Rahat system of irrigation requires

1. A large well in which rope and container are used
2. None of the above
3. A large well in which wheel is used
4. A small well which is connected with pipes

Q. Sprinkler system of irrigation is very advantageous because:

1. It helps the field to get water logged
2. It increases the evaporation of water
3. It efficiently uses the water
4. It decreases the fertility of soil

Q.

Why is it difficult to get rid of water hyacinth?

Q. Identify the irrigation system in which water is supplied through a rotating nozzle.

1. Drip system
2. Sprinkler system
3. Furrow system
4. Basin system