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Interdependence among living organism and the environment

OBJECTIVE QUESTION

Level of Difficulty : Low

1. A group of organisms that have the same shape, structure and can breed together is called a

A Species

B population

C ecosystem

D community

Level of Difficulty : Low

2.

The above diagram shows a tiger chasing after the mouse deer. This interaction of the two

animals is called

A parasitismB competition.

C Prey-predator.

D commensalisms.

Level of Difficulty : Low

3.

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The above diagram shows a ________.

A food web

B food chainC food pyramid

D food organizer

Level of Difficulty : Low

4. Which is not a food chain?

A Green plant Rabbit Eagle

B Green plant Snail Rat Eagle

C Grasshopper Mouse Snake EagleD Grass Grasshopper Mouse Snake

Level of Difficulty : Low

5.

In the above food relationship, where the grasshopper eats the green plants and the frog eatthe grasshopper ..........

A the frog is the primary consumer.

B the grasshopper is the tertiary consumer.

C the frog is the prey and grasshopper is the predator.

D the grasshopper is prey and the frog is the predator.

Level of Difficulty : Moderate

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6.

The above diagram shows organisms W, X, Y and Z involved forming a food chain. Which of

the following arrangements show the right sequence?

A Y Z X W

B Y Z W X

C Z Y W X

D Z W X Y

Level of Difficulty : Moderate

7. The main role of the decomposers in a pond is..

A Increasing the pH of the pond water

B Decreasing the oxygen concentration

C Producing organic matters from inorganic matters

D Decomposing complex organic matters into simpler matters.

Level of Difficulty : Moderate

8.

The above diagram illustrates the process of

A respiration.

B electrolysis.

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C Transportation

Dphotosynthesis

Level of Difficulty : Difficult

9. A type of flea sticks on the stem of a tree. The content of its food gut is analysed and it

contained the fluid of the tree. The product produced by the tree is found to be less than usual.

The flea is called a ..

AHost

B Parasite

CPredator

DDecomposer

Level of Difficulty : Difficult

10.

The above table shows the population of organisms in a habitat which form a food chain.

Which of the following organisms is the producer in the habitat?

A S

B T

C UD V

STRUCTURED QUESTIONS

Organism Number

S 1000T 5000

U 2

V 400

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Photosynthesis is a process that take place in plants.

a) Name the factors that are necessary for the process to take place.

i).

ii)

iii)..

iv)..( 4 marks )

b) Write a word equation to represent the process of photosynthesis.

+ +

( 6 marks )

c) The above potted plant is left in darkness for two days.

i) Which section of the leaf cannot conduct photosynthesis?

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.

( 1 mark )

ii) Give your inference

.

( 1 mark )

ANSWER SCHEME

Objective Questions

1) A - Species

2) C - Prey-predator

3) A - Food web

4) C - Grasshopper Mouse Snake Eagle

5) D - The grasshopper is prey and the frog is the predator

6) C - Z Y W X

7) D - Decomposing complex organic matters into simpler matters.

8) D - Photosynthesis

9) B - Parasite

10) B - T

Structured Questions

a) i) Sunlight

ii) Water

iii) Carbon dioxideiv) Chlorophyll

Chlorophyll

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b) Carbon dioxide + Water Starch/Glucose + Oxygen

Sunlight

c) i) Section Bii) Section B is not exposed to sunlight.