*

Biology
Year 9
First term test November 2017
Time t hour
Name:

Class:....

Teacher's name: Mrs. Nanduni Wickrematunga

Mrs. Samanmalee Gunaweera

Mrs. Ranga Thiranag arna

Mrs. Anusha Perera

(Underline the name of your teacher)

Instructions to candidates

Answer all the questions in the spaces provided.

Total mark for this paper is 60.

The mark allocation is shown at the end of each question. This paper has 11

questions.
 Answer ALL the questions. Write your answers in the spaces provided'

Living organisms have certain characteristics in common. The table gives descriptions of
some of these characteristics.

Complete the table by filling in the gaps.

Characteristic Description

movlng not staying in the same place

excreting

increasing in size and mass

getting energy from food

reproducing

P}ants make sugars by the process of photosynthesis. (Total4 marks)

4" Which of the following factors is least likely toaffectthe rate of photosynthesis?
,4l
1iJ

trA ca rbon dioxide concentration

trB light intensity

EC oxygen concentration

8.3 temperature

B Wrich statement gives the best description of transpiration? Put a cross 1ffi) in the
correct box.
:
A loss of water fi"om ananimal tr
B loss of water from a plant il
C absorption of water by an animal n --l :t
j,:1:

"r-.;

n rt- r , r-
 organ is used to punrp
C
v The tliagrairrs show ()rgilns lbund in the lruman body. Which
blo.d rou.d t6e 6ody'l l)ttt u cross (E) in the correct box.

A lung n
B heart
C kidney n
D brain n (1)

The diagram shows a cell,

Which type of cell does the diagram show? i?i

mA an animal

ffi B a bacterium
E e a fungus
E D a plant
E The statements below describe conditions required for some molecules
move into this cell.

1. a concentration gradient

2. use ofATP
Which of these statements is correct for the process for osmosis? {! i

EA lonly
- lr.l E 2 only
m e land2
L--:l 1 na- 1
I =:r
i.i..i--

F Which parr o1'the cell is ir clrloroplast'? Put a cross (X) in the con'ec1 box-

AD
Btr
Cf
Du (I'!
box'
G whichstatement is correct? Put a cross (E) in the correct

A cells ars found inside organelles D

E cells il
organelles are found inside

C tissues are made from organs n

D cells are made from tissues E {? i

The leaf contains pores called stornata'

The diagram shows a section of a leaf showing a stoma'

Gas X GasY

The arrows show the diffusion of two different gases on a sunny day.

Which row of the table correctly names gas X and gas Y?

ttr\,

carbon dioxide

carbon dioxide

water vapour carbon dioxide

 :t

O phloem :

Give one function of the each part labeled from A- E. (s)

A.
B-
C-
D-

E-
I

A plant is kept in the dark for

24 hours'

It is taken out, part of one of its ieaves

ls covered with biack tape, and it is then
left in the light for 24 hours'

hours?
(a) Why is the plant kept in the dark for 24

and boiled in vraJer for a few rninutes'

The leaf r,vith the tapfon it is removed
Tho leaf is soaked in warm ethanol until
it goes eolourless' The ethanol is 'nashed off
onto the leaf^
with water. Erown iodine solution is dripp6d
The leaf goes blacie, except for the
part which was eovered by the tape'

.z_4"
#\
L=/
0
0

G\
\\\-\:\ - \_l

substance?
(b) (1) Todine goes black in the presence of which
(l)

the parl ofthe leaf whjch had been coverecl by the tape did noi go black'
(ii) Ex,nlairr why

part of a leaf with tape' one of the leaves

(e) The ex,peflmeiit ls repealed, but i;astead-of eovering
hydroxide crystals which absorl:
is rn rapped tn a clea.rplastic bag cantuning sodium
when iodirre soluJion
earbon dioxide. wor-rld- ygr-r ex-pect thjs leaf to go black
is drippeC onto it? Ex'piain your an$ilor'

{?i
 The data in the table shows how the mean maximum
lung volume changes with age
for males and females'

4.80 i 3.40

(a) (i) Piot a bar graph to show this data.

'.J !

age'
(b) The data shows the mean maximum lung volume at each
(i) which of the following would improve the reliability of these mean values? i\\

E A using a larger range of ages

ffi B measuring more people at each age
tr e measuring lung volume in cm3
m D measuring lung volumes in other mammals
(b) (i) Name the dependent variable in this investigation {r i
 B

labelled A' B' c' D' E and F'

The diagram sfuows the human digestive system with parts

(a) (i) Which letter shows where bile is made?

..
, (,;
(l;i Fraducis gidigeslion *re absolberJ by structr-rres cailed'vilii'

(i) In which part of the digestive system are most villi found'i

(t)

(ii) Thc diagrain uhows a villus.

\n^ j
 Explain how the structure of a villus is adapted for the absorption of the procucts
of digestion.

.tr r. r r rr r.r... '. r

(3I
A student investigates the movement of substances from the gut into the blood
using a model.

The Visking tubing bag represents the gut and water represents the blood. Visking tubing
is permeable to small molecules.

plastic cover

substances Visking tubing bag

measuring cylinder

water

The student puts different solutions of various substances into the bag.

After 20 minutes he carries out food tests on the water.

L

(i i) Explain how the volume of the bag would change when it only contains starch soluti
fel

(iii) Describe the test the student should use to find out if glucose is present in the water.
{5}
Figure 6 shows a diagram of a cell.

@'
@ -.,\*
@. \-L
) (e
t \\;
-g
o @d
\c '@

Figure 5

(a) (i) Which row of the table identifies both structure P and structure Q?

m A cell membrane

El B cellwalI

m c vacuole cell membrane

ffi D cellwall

(i i) Plant cells have a cell wall and a large vacuole.

Draw one straight line from each structure to its function'

i3!

structure function

where respiration occurs

contains cellulose to
cellwall provide support

where photosynthesis
occurs

large vacuole
controls the cell

stores cell saP

I Figures D and E show the effects of two diseases caused
bY dietary
deficiencY.

Bleeding gums

Fig. D
Complete the table below by:
(a) identifying each disease Weak bones
(b) stating which constituent was tacking-ii:tna'aGt. Fig' E

(c) naming a food which could have prevented the disease.

Disease Constituent Food

Fig. D

Fig E
(6)

10 The wrong amount of salt in the diei can

Which statement best describes a balanced
be bad for our healih. Which of the
diet?
following statements about salt in our food
A Same mass of each different kind of is correct?
food.
A Too much salt aiways increases blood
B Diet iacking in minerals and vitamins. pressure.
C Recipe in which each ingredient is B Too much salt magdecrease- blood
weighed. pressure.
B Diet with right amounts of different
C Too little salt always increases blood
tbods.
pressure-
115'r
1r-} ts Too liflie sait may increase blood
pressure,
Which of the following illnesses is affected
by being overweight?
A sore throat
E measles
C diabetes wirh high blood sugar
Dflu
 .A
,^
le:\
\ s"t' .\
/

f"*ti";s, The' iist below gives the' fuhc'tb .,. -,.:

,t."
theserfiver-cells.
l, frc
sbsorhs solts and woter rm: the soil :.,:. .
2. kills bocteiic" i I ,' " 'l
:

3. mokes food bY PhotosYnthesis' ':,

4. corries electricqf impulses ,,i-,.'.
;$. shortens to bring obout movement

Write the correct letter of the cell which carries out each of the tasks above next to
the number. (5 marks)