Last updated on August 30th, 2023 at 01:55 am
Lakhmir Singh Science Class 8 Chapter 1 Solutions
Lakhmir Singh Science Class 8 Chapter 1 Very Short Answer Type Questions
1. Which agricultural practice is carried out with the help of a sickle ?
Agricultural practice carried out with the help of a sickle: Harvesting or cutting crops.
2. What name is given to the cutting and gathering of a food crop like wheat or paddy ?
Name for cutting and gathering food crop like wheat or paddy: Harvesting.
3. Name the tool (or implement) used in the traditional harvesting of crops.
Tool used in traditional harvesting of crops: Sickle.
4. Name the process of beating out the grains from harvested crop.
Process of beating out grains from harvested crop: Threshing.
5. Name the machine used in recovering the grain from already cut crop.
Machine used in recovering grain from already cut crop: Combine harvester.
6. Name the machine which does the cutting of standing crops and recovers the grain too.
Machine that cuts standing crops and recovers grain: Combine harvester.
7. Name the process in which grains are separated from chaff and hay with the help of wind.
Process of separating grains from chaff and hay with wind: Winnowing.
8. Name three food materials obtained from animals.
Three food materials obtained from animals: Meat, Milk, Eggs.
9. Name two domestic animals which are used to obtain milk.
Two domestic animals used to obtain milk: Cow, Goat.
10. Name one meat yielding animal and one egg yielding animal.
Meat yielding animal: Chicken (Poultry), Egg yielding animal:** Hen.
11. Name an animal food obtained from insects.
Animal food obtained from insects: Honey
12. What name is given to that branch of agriculture which deals with feeding, shelter, health and breeding of domestic animals ?
Branch of agriculture dealing with domestic animals: Animal Husbandry.
13. Name the major food nutrient provided by fish.
Major food nutrient provided by fish: Protein.
14. Name the vitamin/vitamins present in cod liver oil.
Vitamin present in cod liver oil: Vitamin A (and D).
15. Name one Government Agency which is involved in procuring food grains (like wheat and rice) from farmers and storing them properly.
Government Agency involved in procuring food grains: Food Corporation of India (FCI).
16. What type of organisms grow on stored food grains having higher moisture content ?
Organisms growing on stored food grains with higher moisture content: Fungi.
17. Which crop is generally grown between two cereal crops in crop rotation to restore the fertility of soil ?
Crop grown between two cereal crops to restore soil fertility: Leguminous crop (e.g., pulses).
18. State one advantage of growing a leguminous crop between two cereal crops.
Advantage of growing leguminous crop between two cereals: Leguminous crops fix nitrogen in the soil, enhancing its fertility.
19. Name the nitrogen-fixing bacteria present in root nodules of leguminous plants.
Nitrogen-fixing bacteria in root nodules of leguminous plants: Rhizobium.
20. Which agricultural practice comes first : harvesting or weeding ?
Agricultural practice that comes first: Harvesting or weeding: Weeding.
21. Which is the first step in the cultivation of a crop ?
First step in the cultivation of a crop: Plowing or tilling the soil.
22. For what purpose is a hoe used ?
Purpose of a hoe: To loosen and cultivate the soil, remove weeds, and create furrows for planting.
23. Name the implement used in sowing.
Implement used in sowing: Seed drill.
24. Name the practice used for cultivating paddy.
Paddy cultivation is commonly done using the practice of “transplanting,” where young paddy seedlings are grown in a nursery and then transplanted to the main field.
25. Name the two types of substances which are added to the fields by the farmers to maintain the fertility of soil.
Organic matter (compost, manure) and fertilizers.
26. Some grass is growing in a wheat field. What will it be known as ?
Grass growing in a wheat field: Weed.
27. Name one crop which can tolerate standing water (water-logging) in the field and one which cannot.
Crop tolerating standing water (water-logging): Rice (paddy). Crop not tolerating water-logging: Wheat.
28. Which is the best time for the removal of weeds ?
Best time for weed removal: Early stages of crop growth.
29. Name two methods of irrigation which conserve water.
Drip irrigation and sprinkler irrigation.
30. Fill in the following blanks with suitable words :
(a) The same kind of plants grown and cultivated on a large scale at a place is called ………….[crop]
(b) The first step before growing crops is …………….of soil.[plowing/tilling]
(c) For growing a crop, sufficient sunlight, ……….., and ………… from the soil are essential.[water/nutrients]
(d) Damaged seeds would …………. on top of water.[float]
(e) Crop rotation helps in the replenishment of soil with …………..[nutrients]
(f) The supply of water to crops at different intervals is called …………..[irrigation]
(g) The unwanted plants present in a crop field are called ……………[weeds]
(h) Dried…………..leaves are used for storing food grains at home.[neem ]
(i) Many people living in the …………….areas consume fish as a major part of their diet.[coastal/maritime]
Lakhmir Singh Science Class 8 Chapter 1 Short Answer Type Questions
31.
(a) Why is it is necessary to dry the harvested food grains before storage ?
Drying harvested food grains is necessary to reduce their moisture content. High moisture can lead to mold growth, spoilage, and insect infestation during storage.
