Cambridge IGCSE Biology - 0610 - Supplement Paper 2 2013 Winter Zone 3

The diagram shows how a plant, called a Venus fly-trap, reacts to a fly landing on it. [Image_1: A diagram showing a fly lands on a leaf and the fly is trapped and digested by juices produced by the leaf] Which characteristics of living things are shown by the plant in the diagram? A excretion and growth B growth and sensitivity C nutrition and reproduction D nutrition and sensitivity

The diagram shows the external features of an animal.

To which class does it belong?
A. amphibians
B. fish
C. mammals
D. reptiles

The diagram shows an arthropod.
To which group does it belong?
A annelids
B arachnids
C insects
D myriapods

The diagram shows a small animal. [Image_1: Diagram of a small animal]
Use the key to identify the animal.
1 has wings ....................................... go to 2
has no wings ................................... go to 3
2 has one pair of legs per segment ....... A
has two pairs of legs per segment ..... B
3 has one pair of antennae ................. C
has two pairs of antennae ............... D

Which diagram shows a liver cell? [Image_1: Diagrams A, B, C, D]

What is a feature of both plant and animal cells?
A a cell membrane
B a cell wall
C a large vacuole
D chloroplasts

The diagram shows a student's drawing of guard cells.
Which label line is incorrect?

The diagram shows structures that form the surface of the trachea.
Which level of organisation is the structure labelled S?
A cell
B organ
C organ system
D tissue

What is a correct description of red blood cells?
[Table_1]

The diagrams show an experiment when set up and the same experiment two hours later.

What explains the movement of water and dye?
[Table_1]

Which diagram shows the appearance of a plant cell several minutes after it has been placed in a concentrated solution of sugar? [Image_1: Four diagrams labeled as A, B, C, and D]

Two enzyme-controlled reactions are shown.



From these reactions, what deduction can be made about enzymes?
A Enzyme 1 has been changed to enzyme 2.
B Enzyme 2 slows down the production of amino acids.
C Enzymes can build up large molecules.
D Enzymes only break down large molecules.

The graphs show the quantities of selected vitamins and mineral ions in four foods.

Which food is the richest source of the vitamin or mineral ions essential for the transport of oxygen by the blood?
A beans
B egg
C fish
D fruit

Four foods were tested for each of the following nutrients:
fat (using ethanol);
protein (using the biuret test);
reducing sugar (using Benedict’s solution),

Which food contains protein and fat?

[Table_1]

colour of result of food test

| | purple/lilac | brick-red/orange | milky-white |
|-----|--------------|------------------|-------------|
| A | ✓ | ✗ | ✓ |
| B | ✓ | ✗ | ✗ |
| C | ✗ | ✓ | ✓ |
| D | ✗ | ✓ | ✗ |

key
✓ = nutrient present
✗ = nutrient absent

The diagram shows some of the organs of the human body:
In which organs does the digestion of carbohydrates take place?
A. P and Q
B. P and R
C. Q and R
D. Q and S

The diagram shows the circulatory system of a mammal.

What describes the blood in vessels X and Y?

Which statements about plant transpiration are correct?
[Table_1: \begin{tabular}{|c|l|l|} \hline & \textbf{plants transpire most when} & \textbf{plants transpire least when} \\ \hline \textbf{A} & air is dry & temperature is high \\ \hline \textbf{B} & light intensity is high & air is humid \\ \hline \textbf{C} & light intensity is low & temperature is low \\ \hline \textbf{D} & temperature is cold & light intensity is high \\ \hline \end{tabular}]

The diagram shows two shoots at the start of an experiment on transpiration.
[Image_1: Diagram showing shoot X and shoot Y with a spring balance and readings of 30g]
What are the likely readings on the spring balances after three days?
[Table_1: Possible readings]
A) shoot X: 30g, shoot Y: 30g
B) shoot X: 30g, shoot Y: 25g
C) shoot X: 25g, shoot Y: 30g
D) shoot X: 25g, shoot Y: 25g

The diagram shows some structures in the human neck and thorax.

The lining of tube Q has cilia.
What is an important function of the cilia?
A to help in the exchange of gases
B to increase the internal surface area of tube Q
C to moisten the air entering and leaving the lungs
D to move mucus towards the throat

Which process uses the greatest amount of energy?
A) gaseous diffusion
B) protein synthesis
C) respiration
D) starch digestion

The table shows the approximate composition of air breathed out by a mammal.
[Table_1]
Where did the nitrogen in the air breathed out come from?
A. It was a product of proteins broken down in the mammal.
B. It was a product of respiration.
C. It was in the air that was breathed in.
D. It was exchanged for oxygen which was taken into the blood.

A person has a high-protein diet.
What describes the level of urea in the blood leaving the liver and in the urine leaving the kidneys?

[Table_1]

Table 1:
\begin{array}{|c|c|c|} \hline & \text{urea in blood} & \text{urea in urine} \\ & \text{leaving liver} & \text{leaving kidneys} \\ \hline A & \text{high} & \text{high} \\ B & \text{high} & \text{low} \\ C & \text{low} & \text{high} \\ D & \text{low} & \text{low} \\ \hline \end{array}

The diagram shows some blood vessels near the surface of the skin.



If vasoconstriction occurs at X, what happens to the blood flow at Y and Z?

[Table_1: Table with options]

A: Y decreases, Z decreases
B: Y decreases, Z stays constant
C: Y increases, Z increases
D: Y increases, Z stays constant

At night, a man looks at the stars and then begins to read a map using a bright lamp.
How do the shape of his lenses and the size of his pupils change?

[Table_1]

What is the main function of sweating?
A. to excrete urea
B. to remove excess salts
C. to clean the pores
D. to cool the body

Which method of birth control works by preventing an egg from being released?
A. condom
B. contraceptive pill
C. rhythm method
D. vasectomy

The diagram shows the human female reproductive system.

Sometimes a woman may be unable to have a baby because the tube at X becomes blocked.
Which processes are prevented?

[Table_1]
| | fertilisation | implantation | ovulation |
|-----------------|---------------|--------------|-----------|
| A | ✓ | ✓ | ✓ |
| B | ✓ | ✓ | ✗ |
| C | ✗ | ✓ | ✓ |
| D | ✓ | ✗ | ✓ |

key
✓ = prevented
✗ = not prevented

The graph shows the growth curve of a plant.

At which two stages is growth not occurring?
A 1 and 4
B 2 and 3
C 3 and 4
D 1 and 2

The diagram shows a typical human growth curve from birth to 20 years. During which years is the growth rate greatest? A 0 – 2 years B 8 – 10 years C 12 – 14 years D 18 – 20 years

Albinism in humans is caused by a recessive allele.
Parents who do not suffer from the condition produce an albino child.
What is the probability that their second child will be born albino?
A 25%
B 50%
C 75%
D 100%

An individual has the genotype Bb.
What is the correct description of this genotype?
A. heterozygous, with two different alleles of the same gene
B. heterozygous, with two different genes of the same allele
C. homozygous, with two different alleles of the same gene
D. homozygous, with two different genes of the same allele

The diagram shows the inheritance of flower colour in pea plants.

At which stages in the diagram does meiosis occur?
A. W and Y
B. W and Z
C. X and Y
D. X and Z

In an ecosystem, what happens to most of the chemical energy in the decomposers?
A. It becomes heat.
B. It is transferred back to the producers.
C. It is transferred back to both producers and consumers.
D. It is destroyed.

The three-toed sloth is a mammal that lives in the forests of Central America. Sloths are eaten by wild cats such as jaguars and also by snakes. The sloths mainly eat leaves.

What is the original source of the energy supplied to the jaguars?

A. leaves
B. sloths
C. snakes
D. Sun

The diagram shows a food web.
What type of organism is X?
A a carnivore
B a decomposer
C a herbivore
D a producer

The diagram shows part of the water cycle.

What must occur for water in the sea to reach the cows?
A condensation only
B condensation, then evaporation
C evaporation, then condensation
D evaporation only

The diagram represents part of the carbon cycle.
What is missing from this diagram?
A an arrow from animals to plants
B an arrow from carbon dioxide in the air to animals
C an arrow from carbon dioxide in the air to fossil fuels
D an arrow from plants to animals

The graphs show the changes in the populations of predator and prey over a period of time.
Which point on the graph shows a decrease in predator population?

Which feature of deforestation has the greatest effect on the atmosphere?
A. extinction of forest animal species
B. increased risk of flooding
C. reduction of photosynthesis
D. soil erosion

In a pyramid of numbers, what does the top of the pyramid represent?
A) carnivores
B) decomposers
C) herbivores
D) Sun