Factors affecting Agriculture

Q.

Highest content of humus is found in which soil?

1. Clayey soil

2. Loamy soil

3. Sandy soil

4. Both B and C

Q. What are the features of Saline soils?

1. High content of lime
2. High salt content
3. Very low absorption of water
4. Not suitable for all crops

Q. A prolonged period of very low rainfall, leading to a shortage of water in the area the situation is known as _____ ?

1. Desertification
2. Drought
3. Apocalypse
4. Forest fire

Q. Why is saline soil not suitable for all crops?

1. Saline soil has less humus content and nutrients.
2. Saline soil has a high content of lime and salt.
3. Saline soil does not absorb water.
4. Saline soil is only four to five feet deep.

Q. Compare Kerala and Tamil Nadu based on the factors required for agriculture. And explain why Kerala is far back in agricultural production than Tamil Nadu.

Q.

Name:

(a) Three dissolved impurities.

(b) Three suspended impurities

that are present in the river water.

Q. Why are saline soils unsuitable for cultivation of all kinds of crops?

1. Saline soils have high content of lime and salts
2. Saline soils easily absorb water
3. Saline soils will not absorb water
4. Saline soils have high content of salts but low content of lime

Q. Where are the fields of Salakamcheruvu located?

1. Higer regions of hills
2. Low slopes of hills
3. Flat lands
4. In the coastal regions

Q. What is uncultivable soil or degraded land is known as?

1. Soudu
2. Sudu
3. Sollu
4. Soullu

Q.

Mention the soil suitable for the growth of radish

Q. What makes Salakamcheruvu a drought-prone region?

1. High and incessant rainfall
2. High and erratic rainfall
3. Low and incessant rainfall
4. Low and erratic rainfall

Q. Why are fields in Salakamcheruvu left fallow for a few years after cultivating a crop?

1. Red soil has little humus content.
2. The soil is only two to three feet deep.
3. Red soil is thin and rich in nutrients.
4. Red soil has little water-holding capacity.

Q. Agriculture in Salakamcheruvu faces challenges due to which of the following factors?

1. Shortage of water
2. Unreliable rainfall
3. Rough terrain
4. Poor soil

Q. Salakamcheruvu is a drought-prone area. Choose the factors responsible for this.

1. This region has erratic rainfall.
2. There is not enough water to grow crops.
3. There is not enough water for drinking.
4. Soil of this region has little water-holding capacity.

Q. Why do fields in Salakamcheruvu need to be left fallow or uncultivated for some years after cultivating a crop?

1. The soil in the fields have little humus or nutrients
2. The soil in the fields have little capacity to hold water
3. The soil in the fields lack sufficient depth for roots to grow and spread
4. The soil in the fields lose nutrients very quickly

Q. Which of these options best describe the soil of Salakamcharuvu?

1. Red soil
2. Soil has little humus
3. Soil has low water holding capacity
4. Soil is very deep

Q. What are the characteristics of soil in Salakamcheruvu?

1. Red in colour
2. Little humus
3. Huge capacity to hold water
4. Sufficient depth for roots to grow and spread

Q. Which of the following options is incorrect in context to soil in Salakamcheruvu village?

1. The soil here is only two to three feet deep.
2. The entire village is perched on a flat land ​and has a finer and deeper soil.​
3. Saline soils have high content of lime and salts and will not absorb water.​
4. None of the above.​

Q. Degraded soil that is unfit for cultivation in Salakamcheruvu is known as _____.

1. Salt soil
2. Sudo
3. Saline soil
4. Soudu

Q. When does the rainy season occur in Salakamcheruvu?

1. May-August
2. June-November
3. July-September
4. June-August

Q. Choose the properties of red soil found in the village of Salakamcheruvu.

1. Red soil is heavy and rich in nutrients.
2. Red soil has little humus content.
3. The depth of red soil found here is two to three feet.
4. Red soil has little water-holding capacity.

Q. The major agricultural factors in Salakamcheruvu are terrain, rainfall, and soil.

1. True
2. False

Q. High soil salinity is caused by plant absorption and evaporation.

1. True
2. False

Q. State two harmful effects of drought on animals.