YADNYA e-Learning
Environmental Studies - 5th Standard
12. Food for All
Q1. What’s the solution ?
The plant in the pot is not growing well.
Ans: 1) Water the plant regularly.
2) Add manure to the pot
3) Keep the pot at the place where it get sufficient sunlight
Q2. Use your brain power !
What is the purpose of storing foodgrain in our house?
Ans: We store food grains in our house to use it later. Seasonal foodstuff can’t be available throughout the year to use them in other season. Hence we store foodgrain in our house.
Q3. Find and correct the incorrect statements.
(a) There is only one method of farming.
Ans: Incorrect statement
Correct statement: There are many ways of farming.
(b) India is an agricultural country.
Ans: Correct
(c) Use of improved seeds does not lead to higher yields.
Ans: Incorrect statement
Correct statement: Use of improved seed leads to higher yields.
Q4. Answer the following questions.
(a) What are the advantages of using improved seeds?
Ans: 1) Improved seeds have higher yield.
2) They can resist pest attacks.
3) Some varieties become ripe for harvesting in a shorter period of time while some give a high yield even with a low water supply.
(b) Which are the modern methods of irrigation? What are their advantages?
Ans: Drip irrigation and sprinkler irrigation are two modern methods of irrigation.
Advantage of Modern method of irrigation:
1) Full use is made of the available water.
2) Roots of the crops get enough water.
3) No water get wasted through evaporation.
(c) Describe the ‘drip irrigation’ method.
Ans: 1)The drip irrigation method makes use of pipes with holes.
2) This ensures that the required amount of water drips only near the plants.
3) Thus, full use is made of the available water.
(d) What are the reasons due to which growing crops are damaged?
Ans: 1) Disease and pest attacks can damage crops in the fields.
2) Lack of water supply also can damage crops.
(e) What is done to avoid the damage to crops?
Ans: 1) Insecticides and pesticides are sprayed on crops.
2) Certain chemicals are rubbed on the seeds before sowing.
3) Modern methods of irrigation are used to water the crops.
(f) What causes the fertility of the soil to diminish?
Ans: 1) Excessive use of chemical fertilizers reduce the fertility of soil.
2) Excessive watering makes the soil salty.
(g) What changes has modern technology brought about in the methods of farming?
Ans: 1) Modern technology of agriculture uses improved seeds that gives higher yields.
2) Modern methods of irrigations such as drip irrigation and sprinkle irrigation are used.
3) Some organic fertilizers and manures are used to increase the fertility of soil.
4) Through agricultural assistance programmes farmers are given information and weather forecasts.
(h) What methods are used to preserve foodgrain?
Ans: 1) The grain is dried well in the sun and filled in sacks.
2) To prevent damage by pests, chemicals are sprayed at the place of storage or all around it.
3) Neem leaves are mixed in the grain. Some protective chemicals that can be mixed with the grain are also available in the market.
4) Storage places are always kept dry and airy to prevent fungus formation.
(i) How is water made available for farming?
Ans: 1) Crops grow well if they are watered at the right time. Water from rivers, lakes and wells is used for irrigation in addition to rainwater.
2) Greater quantities of water are stored by building dams and bunds on river to obstruct the flow of water downstream.
Q5. Match the following.
Thank You....
Visit Again For More Information..
Wow....
ReplyDelete