Cambridge IGCSE Biology - 0610 - Supplement Paper 2 2015 Winter Zone 2

Some lizards detach their tails when threatened by a predator. Which characteristic is shown?
A. excretion
B. growth
C. reproduction
D. sensitivity

The diagram shows a key for five vertebrates.

Which class of vertebrates does organism W belong to?
A. amphibians
B. birds
C. fish
D. reptiles

The diagram shows an animal whose scientific name is Rattus rattus.
Which genus does it belong to?
A. mammal
B. rattus
C. Rattus
D. vertebrate

The diagram shows a cross-section of part of a leaf.
Which type of cell is found in layer X?
A
B
C
D

The diagram shows a student’s drawing of two guard cells. Which label line is not correct?

The diagram shows structures taken from two different organisms.

(cells not drawn to scale)
Which structures have the main function of transport?
A P and R
B P and S
C Q and R
D Q and S

At which level of organisation is a root?
A. organ
B. organ system
C. organism
D. tissue

The diagram shows a plant cell.

What is the appearance of this cell after it has been placed in pure water for 30 minutes?
A
[Image_A]
B
[Image_B]
C
[Image_C]
D
[Image_D]

A student cuts out four pieces of carrot root of equal size. The pieces are treated as shown in the diagram, and then left for two hours. After two hours, which piece of carrot will be the smallest?
[Image_1: Diagram showing four containers labeled A, B, C, and D with 'boiled carrot' in sugar solution, 'boiled carrot' in water, 'fresh carrot' in sugar solution, and 'fresh carrot' in water, respectively.]

The diagram shows the effect of an enzyme working in the human digestive system. [Image_1: Diagram of protein being broken down into amino acids by an enzyme at pH 1.5 and temperature 37°C]
What would reduce the rate of production of amino acids?
A. removing the amino acids as they are formed
B. increasing the amount of protein
C. raising the temperature to 40°C
D. raising the pH to 7.5

Which substance catalyses the breakdown of fats to fatty acids and glycerol?
A. adrenaline
B. alcohol
C. bile
D. lipase

An experiment was done using the apparatus shown in the diagram.
The carbon dioxide content of the water in each tube was measured at the start and again three hours later.
In which tube would there be a decrease in carbon dioxide content?
[Image_1: diagram of tubes A, B, C, and D with various conditions shown]

What is formed first in a leaf as a result of photosynthesis?
A. chlorophyll
B. glucose
C. starch
D. water

A plant with striped leaves similar to the one below was kept in bright light for six hours.

A leaf was taken from the plant and the chlorophyll removed. The leaf was then tested for starch using iodine solution.

Which diagram shows the result of the test?

From which part of a leaf does most water evaporate during transpiration?
A the cuticle
B the guard cells
C the spongy mesophyll cells
D the xylem vessels

In which order does water pass through the cells of a plant, as the water travels from the roots to a leaf?
A mesophyll cells → root hair → root cortex → xylem
B root cortex → root hair → xylem → mesophyll cells
C root hair → mesophyll cells → root cortex → xylem
D root hair → root cortex → xylem → mesophyll cells

The diagram shows a vertical section through a human heart. What are X and Y? | | X | Y | |----|----------------|----------------| | A | left atrium | right ventricle| | B | left ventricle | right atrium | | C | right atrium | left ventricle | | D | right ventricle| left atrium |

The diagram shows the composition of four samples of air (O\textsubscript{2} = oxygen, CO\textsubscript{2} = carbon dioxide, N\textsubscript{2} = nitrogen).
Which sample is inspired air and which sample is expired air?

[Table_1:
| | inspired air | expired air |
|---|--------------|-------------|
| A | K | N |
| B | L | K |
| C | M | L |
| D | N | M |]

The diagram shows apparatus used to investigate anaerobic respiration in yeast.

What happens to the coloured liquid?
A moves rapidly to the left
B moves slowly to the left
C moves to the right
D stays still

The diagram shows some organs in which urea is found.
Which organ makes urea, and which organ removes it from the blood?
[Table_1]
| | makes urea | removes urea from blood |
|---|------------|------------------------|
| A | P | Q |
| B | Q | Q |
| C | Q | R |
| D | R | P |

What is a function of the kidneys of a healthy person?
A. break down toxins
B. eliminate all salts
C. reabsorb all glucose
D. retain all water

The diagram shows a capillary loop in the skin of a mammal.
What will the capillary loop look like if the mammal becomes cold?

The diagram shows a section through part of the eye.
X is a contracted ciliary muscle.
What will happen when it relaxes?
A The lens will decrease its curvature.
B The lens will increase its curvature.
C The size of the pupil will decrease.
D The size of the pupil will increase.

The diagram shows a timeline of a woman’s menstrual cycle, which lasts for 28 days.
On which days of the menstrual cycle is a woman most likely to become pregnant?
A) days 1 - 4
B) days 7 - 10
C) days 13 - 16
D) days 20 - 23

The diagram shows a vertical section through a flower.

What are X and Y?

[Table_1]
X | Y
A anther | stigma
B anther | style
C stamen | stigma
D stamen | style

The graph shows the height of a child, from birth to the age of 10. [Image_1: Graph showing height (cm) vs age (years), with data plotted from 0 to 10 years.]
What was the approximate height of the child at 7 years of age?
A 106 cm
B 116 cm
C 122 cm
D 130 cm

Four samples of seeds germinated in different conditions of temperature and light, as shown in the table.

[Table_1]

A typical seedling from each sample was removed after seven days.

Which seedling was from sample 2?

What results from meiosis of a diploid cell?
A. genetically different diploid cells
B. genetically different haploid cells
C. genetically identical diploid cells
D. genetically identical haploid cells

What will be the genotypes of the offspring resulting from a genetic cross between two individuals, one of which is homozygous dominant, (TT), and the other heterozygous?
A) all Tt
B) 50% TT, 50% tt
C) 50% TT, 50% Tt
D) 25% TT, 50% Tt, 25% tt

Which pathway is taken by energy from the Sun?

A. chemical energy in carbohydrates -> stored in plants -> trapped by chlorophyll
B. stored in plants -> chemical energy in carbohydrates -> trapped by chlorophyll
C. stored in plants -> trapped by chlorophyll -> chemical energy in carbohydrates
D. trapped by chlorophyll -> chemical energy in carbohydrates -> stored in plants

The diagram shows a food chain:
If the hawks are removed from this food chain, what is likely to happen to the numbers of the other organisms in this chain?
[Table_1]
Choose the correct option: A, B, C, or D.

The diagram shows a food web including a producer, consumers and a decomposer.
Which organism is the decomposer?

Which organisms remove carbon dioxide from the atmosphere?
A carnivores
B decomposers
C herbivores
D producers

Which process is not part of the carbon cycle?
A. combustion
B. photosynthesis
C. respiration
D. transpiration

The diagram shows a simple water cycle.
What is responsible for water loss from the tree?
A. evaporation
B. photosynthesis
C. respiration
D. translocation

The graphs show the number of carnivores in a habitat over a period of time. At time X the herbivores in their food chain are removed from the habitat.
Which graph shows the effect of this on the number of carnivores?
[Image_A: Graph A]
[Image_B: Graph B]
[Image_C: Graph C]
[Image_D: Graph D]

What is a reason for conserving plant species?
A. to absorb oxygen from the air
B. to decrease rainfall
C. to obtain drugs for medicinal use
D. to release carbon dioxide into the air

What is reduced after deforestation?
A. force of rain hitting the ground
B. rainwater run-off
C. soil erosion
D. soil fertility

The diagram shows four positions on a river where water samples were taken.

Which graph shows oxygen concentrations in the river?