Cambridge IGCSE Biology - 0610 - Core Paper 3 2017 Winter Zone 1

Use the key to identify the insects in Fig. 1.1.
Write the letter for each insect in Table 1.1.
[Image_1: Fig. 1.1 shows five different insects: A, B, C, D, E]

(a) Define the term population.

(b) Fig. 2.1 shows a marine food web. Use Fig. 2.1 to answer these questions.
(i) State the name of one producer in this food web. [1]
(ii) State the name of one herbivore in this food web. [1]
(iii) Complete the food chain, containing four organisms, that ends with the seagull. Write the names of the organisms in the boxes. [1]
(iv) The shark population has decreased. Explain what effect this might have on the populations of starfish and limpets.
starfish
............................................................................................................................................
limpets
............................................................................................................................................ [4]
(v) Suggest two factors that could decrease the shark population. 1 ................................................................................................................ 2 ................................................................................................................ [2]

(c) State the principal source of energy for food webs.

(d) The sea forms an important part of the water cycle. Fig. 2.2 shows the water cycle. State the names of the processes shown by the letters in Fig. 2.2.
A ........................................................................................................................
B ........................................................................................................................
C ........................................................................................................................
D ........................................................................................................................

(a) There are four different types of birth control method. These are shown in Table 3.1.
Complete Table 3.1 by writing each of the following examples of birth control in the correct column.

abstinence condom contraceptive pill diaphragm female sterilisation IUD monitoring body temperature vasectomy

Table 3.1

| type of birth control method | | | |
|------------------------------|---------|---------|---------|
| natural | chemical| barrier | surgical|
| | | | |

[4]

(b) Complete the sentences to state how the contraceptive pill works.

Choose your answers from the list.

Each of the words may be used once, more than once or not at all.

egg cells enzymes hormones ovary ovules sperm testes

The contraceptive pill contains .......................................... . They work by preventing the .......................................... releasing .......................................... .

[3]

(c) HIV is an example of a sexually transmitted infection.

(i) State what the letters HIV stand for.
..........................................................[1]

(ii) Describe extbf{two} ways that HIV can be transmitted.
1 ..............................................
2 ..............................................
[2]

(iii) Suggest extbf{two} ways that the spread of HIV can be controlled.
1 ..............................................
2 ..............................................
[2]

Fig. 4.1 shows a lily flower.

(a) State the letters that identify the parts of the flower in Fig. 4.1.
anther ..................
filament ..................
petal ..................
stigma ..................
[4 marks]
(b) The lily flower is pollinated by insects.
State two ways that the pollen from the lily flower is different from the pollen of a wind-pollinated flower.
1 ..........................................................................................................................
2 ..........................................................................................................................
[2 marks]
(c) Pollen contains the male gamete.
State the name of the process that produces gametes.
..........................................................................................................................
[1 mark]
(d) The boxes on the left contain the names of parts of a flower.
The boxes on the right contain the functions of parts of a flower.
Draw one straight line to link each part of the flower with its function.
Draw four lines.
part of a flower
- ovary
- petal
- sepal
- stigma
function
- where ovules are produced
- where pollen is produced
- protects the flower when in bud
- often coloured to attract insects
- where pollen is deposited
[4 marks]

Fig. 5.1 shows a diagram of a cross-section of a leaf.
[Image_1: Diagram of a cross-section of a leaf]
(a) (i) Identify the parts labelled on Fig. 5.1 and state the names of
tissue A ...........................................................................................................................................
cell B ................................................................................................................................................
[2]
(ii) The cells in tissue A are adapted for photosynthesis.
State where photosynthesis occurs in the cell.
..........................................................................................................................................................
[1]
(b) Draw circles around the structures that are found in both plant and animal cells.
cell membrane cell wall cytoplasm
starch grains nucleus permanent vacuole
[3]
(c) State the raw materials needed for photosynthesis.
..........................................................................................................................................................
[1]
(d) Fig. 5.2 shows two leaves from the same plant.
[Image_2: Two leaves from the same plant]
Suggest which leaf carries out more photosynthesis and explain why.
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
..........................................................................................................................................................
[2]

Drugs are substances that alter chemical reactions in the body.
(a) The boxes in the middle show the name of the drug.
The boxes on the left show the long-term risk of using the drug.
The boxes on the right show the short-term effect of using the drug.
Draw one straight line from the name of the drug to its long-term risk.
Draw another line from the name of the drug to its short-term effect.
Draw three lines on each side.

[Image showing the boxes with 'long-term risk', 'drug', and 'short-term effect']
[3]
(b) Fig. 6.1 shows the percentage of people who misused drugs in a one-month period.
These data were taken from a survey of people of different ages.

[Image displaying Fig. 6.1 with a bar graph showing 'percentage of people misusing drugs in one month' across different 'age group/years']

Use the information in Fig. 6.1 to answer these questions.
(i) State the age group that had the lowest percentage of people misusing drugs.
................................................................................................................... years [1]
(ii) State the percentage of 31-35 year-olds that misused drugs in one month.
................................................................................................................... % [1]
(iii) Describe the results shown in Fig. 6.1.
.......................................................................................................................
.......................................................................................................................
.......................................................................................................................
.......................................................................................................................
.......................................................................................................................
.......................................................................................................................
[3]
(c) Drugs can also be used for medicinal reasons. Antibiotics are an example of a medicinal drug.
State what type of infection a doctor might prescribe antibiotics for.
.......................................................................................................................
.......................................................................................................................[1]

Fig. 7.1 shows a potometer.

This equipment is used to measure the rate of water uptake in a leafy shoot.
(a) A leafy shoot in a potometer was exposed to different conditions.
The distance moved by the air bubble in 10 minutes was recorded.
Table 7.1 shows the results.
[Table_1]
Table 7.1
\begin{align} \text{conditions} & \text{distance moved in 10 minutes / mm} \\ \hline \text{cool, damp air} & 4 \\ \text{cool, dry air} & 6 \\ \text{warm, damp air} & 10 \\ \text{warm, dry air} & 50 \end{align}
(i) State which conditions result in the greatest rate of water uptake in the shoot.
..........................................................................................................................[1]
(ii) Calculate the rate of water uptake in millimetres per minute for the shoot in cool, damp air.
Show your working.
................................ mm per min [2]
(iii) The rate of water uptake is approximately equal to the rate of transpiration.
An increase in wind speed increases the rate of transpiration.
Suggest the effect that increasing wind speed would have on the movement of the air bubble.
..........................................................................................................................
..........................................................................................................................[1]
(b) State where and how water normally enters a plant.
..........................................................................................................................
..........................................................................................................................
..........................................................................................................................[2]
(c) Describe how water is lost from a plant by transpiration.
..........................................................................................................................
..........................................................................................................................
..........................................................................................................................
..........................................................................................................................
..........................................................................................................................
..........................................................................................................................[3]
(d) State the name of the tissue that transports water to the leaves.
..........................................................................................................................[1]

Water is an important part of a balanced diet.
(a) State three other components of a balanced diet.
1 .............................................................................................................................
2 .............................................................................................................................
3 ............................................................................................................................. [3]

(b) State where most water is absorbed in the alimentary canal.
................................................................................................................................. [1]

(c) Excess water is removed in the urine.
Fig. 8.1 shows the organ system that excretes excess water.

State the names of the parts labelled A, B and C.
A ........................................
B ........................................
C ........................................
[3]

(d) The volume and the concentration of urine can vary.
Body temperature, exercise and water intake affect the volume and concentration of urine.
Table 8.1 shows three changes in the body.
Complete Table 8.1 by putting a tick in the boxes to show how each change affects the volume and concentration of the urine.
One example has been done for you.
[Table_1]
[2]