Soil and Crop Growth

Q.

Pick out the odd one from the following words given in the box and give the reason for it.

1. Plough

2. Seed Drill

3. Hoe

4. Chain pump

5. Sickle

Q. Which among the following is not an advantage of a seed drill?

1. Seeds are sown at proper depth
2. Seeds are sown at equal distances
3. Seeds are protected from birds
4. Seed coverings are removed.

Q. is a technique in which plants are grown without soil.

1. Hydroponics
2. Aquaculture
3. Apiculture

Q.

Hoe is used for:

1. Threshing

2. Weeding

3. Loosening of soil

4. Both (b) and (c) are correct

Q.

What are the advantages of the process depicted in the given image?

1. Loosens soil allowing air to flow freely.
2. Aids growth of earthworms and microorganisms.
3. Creates more surface area for nitrogen fixation.
4. Brings nutrient rich soil to the top layer.

Q. Ram is a farmer but fails to grow healthy crops. He realised that the problem lies with the soil. Which of the following has/have influenced the performance of the soil?

1. Climate of the location
2. Nutrient content of his field
3. Interval of water supply
4. Insect-pest population in his field

Q.

Why hydroponics produce higher yield than farming in soil?

Q. Choose a pulse crop from the options given below.

1. Rice
2. Gram
3. Maize
4. Wheat

Q. The method of cropping which helps to keep the pest population under control is:

1. single cropping
2. rotation cropping
3. multiple cropping
4. mixed cropping

Q. In which of the following irrigation system, water is allowed to flow through a rotating nozzle?

1. Drain system
2. Rotating system
3. Drip system
4. Sprinkler system

Q. Match the following:

1. Khurpi
2. Seed drill
3. Sickle

Q.

Find out the wrong pair from the following table

A.Bio-predators	1. Menochilus species
B. Bio - repellant	2.Azadiractin
C.Ploughing	3.Threshing
D.Seed Drill	4.Tractor

1. .Bio-predators

   Menochilus species

2. Bio - repellant

   2.Azadiractin

3. Ploughing

   Threshing

4. Seed Drill

   Tractor

Q. A technology of growing crops without soil is known as:

1. hydroponics
2. hydrotherapy
3. hydrophobic
4. hydrostatic

Q. Rahul believes soil is one asset that we can hand over intact to future generations. In order to do so, which among the following is a major technique he has to follow for proper management?

1. Use more chemical fertilizers
2. Control erosion of top soil
3. Use hydroponic to grow crops
4. Stop cultivating in hilly regions.

Q. Ram wants to enrich soil with nutrients for his plants. Suggest the correct group of plant nutrients he should add that does not cause water pollution.

1. Urea, cow dung, NPK fertilizer
2. Vermicompost, poultry wastes, green manure
3. NPK fertilizer, green manure, goat droppings
4. Bone meal, fish manure, phosphate fertilizer

Q. In broadcast planting method, the seeds ____________.

1. are sown at proper depth.
2. are sown at equal distances.
3. are randomly scattered.
4. of different plants are sown alternatively.