topic 1 interaction among living things

8/4/2019 Topic 1 Interaction Among Living Things

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Exercise

Objective Questions

1. Which of the following animals live in groups?A Polar bearsB TigerC ZebraD Lizard

2. Which of the following are the reasons why some animals live in solitary?

I. To avoid competition for foodII. To avoid competition do air

III. To avoid competition for space

A I and II onlyB I and III onlyC II and III onlyD I, II and III

3. The pictures below show different types of animals in a habitat.

P Q

R S

Which of the following animals will compete for food?

A P and QB P and RC P and SD P, Q and S


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4. Why certain animals live alone?

A To avoid competition for sunlightB To avoid competition for foodC To help the others look for food.D To help others to look for mates during the mating season.

5. Diagram 1 shows a type of animal that lives solitarily.

Diagram 1

Which of the following statements are true about the animal?

I. It is a carnivoreII. It is considered as a weak animal and it is hunted by stronger animals.III. It lives alone to hunt for its preyIV. It works together with others of the same species to hunt for its prey.

A I and IIB I and IV

C II and IVD III and IV

(10 MARKS)


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0

20000

40000

60000

80000

100000

120000

1980 1990 2000 2010

Population of

organism Q

Year

Subjective Questions

1. Diagram 2 shows the information gathered by a group of students about thepopulation of organism Q from the year 1980 to the year 2010.

Diagram 2

(a) What is the trend of change in the population of organism Q from the year 190 tothe year 2010?

________________________________________________________________

(b) State two inferences based on your answer in 1(a).

1) ______________________________________________________________

______________________________________________________________

2) ______________________________________________________________

______________________________________________________________

(c) What is the aim of the investigation?

________________________________________________________________

________________________________________________________________

(d) What is the hypothesis based on the diagram above?

________________________________________________________________

________________________________________________________________


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(e) What is the conclusion based on the investigation?

________________________________________________________________

________________________________________________________________

(10 marks)


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Answers

Objective Questions

1. C

2. B3. B4. B5. B

Subjective Questions

Suggested Answers

1.(a) Decreases

(b)1) Deforestation activities lead to the destruction of natural habitat.2) Q are hunted by human

(c) To investigate the relationship between the year and the population of organismQ.

(d) The longer the number of years, the lower the population of organism Q / As thenumber of year increases, the population of organism Q decreases. (or vice-versa)

(e) The longer the number of years, the lower the population of organism Q / As thenumber of year increases, the population of organism Q decreases. (or vice-versa)

topic 1 interaction among living things

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