Matric Notes Class 10th English Book Exercise Chapter 12 Population Growth and World Food Supplies Vocabulary Reading Comprehension Short Question Box Question

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Vocabulary

A. Give meaning of each word as used in the text.

• Word Meaning

1. Incessant         constant
2. Adequate         sufficient
3. Integrity         solidarity
4. Declining decreasing
5. Pesticides insecticides
6. Massive           cumbersome
7. Sustained continuous
8. Eroded spoiled
9. Unprecedented exceptional

B. Make sentences of the following words.

• Word: Ample
• Sentence: We have ample time to complete our work in time.

• Word: Depleted
• Sentence: The dry Earth depleted plenty of water.

• Word: Critical
• Sentence: He is in critical condition in Services Hospital.

• Word: Current
• Sentence: His current income is sufficient for his family.

• Word: Enhance
• Sentence: We must enhance our knowledge in IT.

• Word: Optimum
• Sentence: this is the optimum work that I have done ever.

C. Complete the following sentences with words beginning with prefix-sis-or-un-.

Q1. My shoe is __ (not tied).

Ans. My shoe is untied.

Q2. Waqar __ with Nazish (does not agree).

Ans. Waqar disagrees with Nazish.

Q3. Ali is __ to beat me in the video game. (not able).

Ans. Ali is unable to beat me in the video game.

Q4. Waheed __ his parents. (does not obey).

Ans. Waheed disobeys his parents.

Q5. Our teacher says she does not want __ home works handed in. (not finished).

Ans. Our teacher says she does not want unfinished home works handed in.

Reading Comprehension

A. Answer the following questions.

Q1. Which areas are most affected by incessant growth in population?

Ans. The developing countries are the most affected areas by the incessant growth in population.

Q2. Why are developing countries going to suffer more due to over population?

Ans. The developing countries are going to suffer more due to over population and the food problems are very severe in these countries. The per capita availability of food grains has been declining for the past 25 years.

Q3. What is the major cause of food shortages and malnutrition?

Ans. The major cause of food shortages and malnutrition is the severe increase in population growth and lack of resource management.

Q4. How are water resources under great stress?

Ans. Water resources are under great stress because populous cities, states and countries require more water from rivers and lakes to fulfill their need of fresh water and to irrigate their crops.

Q5. What is the effect of depletion of fossil energy?

Ans. The depletion of fossil energy accelerates as population’s needs for food and services escalate. Thus, cost of fuel increases everywhere.

Q6. What is the limitation of improved technology?

Ans. Improved technology cannot produce an unlimited flow of those vital natural resources that are the raw materials for sustained agricultural production.

Q7. How can sufficient food supply be made possible for the future generation?

Ans. Sufficient food supply can be made possible for the future generation by curtailing the growth in human population and maintaining the integrity of biodiversity.

Q8. What strategies should be adopted for safe future?

Ans. Strategies for safe future should be based on the conservation and careful management of land, water, energy and biological resources needed for food production. We should also make efforts to keep the population of the world under control.

Box / Additional Questions

Q1. What does the word “depleted” mean?

Ans. It means ‘used up’ of ‘consumed’.

Q2. Do you also face shortage of water in your locality? Why?

Ans. Yes, I also face shortage of drinking water in my locality because of the ever growing needs and due to immense increase in population.

Q3. How is fossil energy a finite source?

Ans. Nearly 80% fossil energy is used by the developed countries in farming and as an alternative of human labour. Developing countries are using it too in irrigation and for fertilizers since it is finite, so soon it will exhaust.

Q4. What other word you can use to replace “optimum”?

Ans. Optimum can be replaced by the word most favorable or advantageous.

B. Read the text and put information into the graphic organizer showing cause and effect.

Ans. The alarming and incessant growth of population is causing serious economic problems in almost all continents. Great pressure is being placed on arable land, water, energy and biological resources. The per capita availability of food grains has been declining for the past 25 years. Certainly with a quarter million people being added to the world population each day, the need for grains and all other food will reach unprecedented levels.

There are about quarter of a million people added to the planet per day. This exponential growth is mostly happening in developing nations.

Certainly improved technology will assist in more effective management and use of resources.

Strategies for the future must be based on the conservation and careful management of land, water, energy and biological resources needed for food production.

Therefore from now until an optimum population is achieved, strategies for the conservation of land, water, energy and biological resources are to be implemented effectively. Maintaining a sound and productive environment all over is essential.