Rise against the Machine

Q.

The three cultural revolutions which favoured a steep rise in the human population are :

(i) Agricultural Revolution

(ii) Tool-making Revolution

(iii) Scientific Industrial Revolution

Arrange them in the order of occurrence.

1. (i), (ii), (iii)

2. (ii), (i), (iii)

3. (iii), (i), (ii)

4. (ii), (iii), (i)

Q. Tick-mark the correct meaning of reproduction

1. increase in the number of parents
2. production of identical individuals
3. increase in population
4. production of new individuals

Q.

What do you understand by natural selection?

Q.

Rapidly growing industries made human life more uncomfortable, with greater job opportunities and larger production of food.

1. True

2. False

Q. A population of 100 individual has a doubling time of 25 years. What size will this population be in 100 years?

1. 100
2. 400
3. 1600
4. 3200

Q. Answer each of the following questions in a paragraph.
Which are the important stages of economic evolution? Briefly explain any one.

Q. The use of prophylactic helped in reducing the death rate.

1. antibiotics
2. vaccines
3. antigens

Q. Application based questions.
Study the table given below in regard to population interactions and answer the questions that follow

Species A	Species B	Name of Interaction
-	0	(a)
+	-	(b)
-	-	(c)
+	+	(d)
+	0	(e)

Note (+) plus = beneficial interaction; () minus =deterimental interaction; (0) zero neutral interaction.(a) Identify the interactions (a) to (e). b) Explain each one of them.

Q.

Name the scientist who proposed the theory of natural selection.

Q. Differentiate between.
Population and community

Q.

Rapidly growing industries made human life more uncomfortable, with greater job opportunities and larger production of food.

1. True

2. False

Q. Match the following

1. n
2. 2n
3. Tt
4. Tall

Q.

Rickets, scurvy and beriberi are deficiency diseases which appeared mainly due to the non-availability of proper food.

1. True

2. False

Q. The use of prophylactic helped in reducing the death rate.

1. antibiotics
2. vaccines
3. antigens

Q.

The three cultural revolutions which favoured a steep rise in the human population are :

(i) Agricultural Revolution

(ii) Tool-making Revolution

(iii) Scientific Industrial Revolution

Arrange them in the order of occurrence.

1. (i), (ii), (iii)

2. (iii), (i), (ii)

3. (ii), (i), (iii)

4. (ii), (iii), (i)