Question

SUBJECT: SCIENCE
Class : 8

Fill in the blanks:

Seed drill is used for ----------------------of the seeds.
Manures ---------------the water holding capacity of the soil.
The modern method of irrigation are ------------------------and --------------------.
Soil can be loosened with the help of ----------------------------.
The same kind of plants grown in a large scale is called-----------------------.
The first step before growing crop is ----------------------------.
Damaged seeds would --------------------on the water.
For growing a crop, sufficient sunlight, ----------- and ----------------from the soil are essential.
Watering the crop is called -------------------.
10.Khariff crops are sown in ------------------------.

II. Match the following:
A B
Kharif crop a. Preparation of soil
Rabi crop b. Urea
Chemical fertilizer c. Animal excreta, plant waste
Organic manure d. Wheat
Tilling e. Paddy
III. Answer the following:
How green plants synthesise their own food?
Where do animals get their food?
What do you mean by crop?
Name two cropping patterns.
Mention the names of two Kharif crops.
Write the names of two rabi crops.
What is agriculture?
What are the agricultural practices?
Name the implements used in ploughing.
10. What is manure?
11. Write some sources of irrigation.
12. Mention the two methods of irrigation.
13. What are modern methods of irrigation?
14. Which is better to use manure or fertilizer?
15. Mention the traditional methods of irrigation.​

Answer 1

Answer:

1 sowing

2 increases

3drip irrigation, sprinkler system

4 worms

5 crop plants

6 preparation of soil

7 float

8 air, water

9 irrigation

10 rainy season

11 kharif crop = paddy

Rabi crop = wheat

Chemical fertiliser = urea

Organic manure = animal waste, plant waste

Tilling = preparation of soil

Explanation:

Hope it helps!

Answer 2

Answer:

1. sowing

2. increases

3. drip irrigation and sprinkler irrigation

4. plough

5. crop

6. preparation of soil

7. float

8. water, nutrients

9. irrigation

10. winter (october to april)

11. Khrrif - wheat

Rabi - paddy

Chemical fertilizers - urea

Organic manure - animal excreta, plant waste

Preparation of soil - tilling

12. Manure is organic matter that is used as organic fertilizer in agriculture. Most manure consists of animal feces; other sources include compost and green manure.

13. Drip Irrigation System. Drip irrigation is the most used irrigation system these days. In the drip irrigation, we lay plastic pipes in rows near the crops or plants. ...

Sprinkler System. Sprinkler systems mimic the phenomenon of rain.

14. . Which is better to use manure or fertilizer?

15. Moat. Also called the pulley system, it involves pulling up water from a well or other such source to irrigate the land. ...

Chain pump. A chain pump consists of two large wheels connected by a chain. ...

Dhekli. It is a process of drawing water from a well or such similar source. ...

Rahat.

PLS MARK BRAINLIEST