Download The diagrams show four different animals

CHOITHRAM INTERNATIONAL
CLASS TEST
GRADE IX
BIOLOGY
Dt.:
Q1 The diagrams show four different animals. They are not drawn to the same scale.
Which are vertebrates?
A W and X
B X and Y
C Y and Z
D W and Z
Q2 The diagram shows half a flower.
The following key may be used to identify the plant on
which the flower is growing.
1 petals separate from sepals ................................ go to 2
petals and sepals joined ...................................... plant P
2 flower with four stamens ...................................... plant Q
flower with more than four stamens ..................... go to 3
3 ovary as tall as wide ............................................ plant R
ovary taller than wide ........................................... go to 4
4 flower has two petals ........................................... plant S
flower has more than two petals .......................... plant T
To which plant does the flower belong?
A plant P B plant Q C plant R D plant T
Q3 The table shows the amount of water and salt lost from the kidneys and skin on a
hot day and on a cold day. Food and drink intake are the same on both days.
What do these results show?
A Less water is lost from the kidneys on a cold day than on a hot day.
B More salt is lost from the kidneys on a hot day than on a cold day.
C The total amount of salt lost each day is the same.
D Water is not lost from the kidneys on hot days.
OR
Q4 The nucleus in each cell in the stem of a plant contains 32 chromosomes.How
many chromosomes are there in the nuclei of its pollen grains?
A8
B 16
C 32
D 64
Q5 A newspaper headline incorrectly stated, “The use of condoms can result in
erectile dysfunction”.
Erectile dysfunction is a medical problem which results in problems with sexual
intercourse.
Scientists are concerned that this incorrect statement could lead to an increase in
HIV.
(a) Describe the process of sexual intercourse in humans.[2]
(b) Condoms are used as one form of birth control.
(i) What name is used to describe this method of birth control?[1]
(ii) Explain how a condom acts as a method of birth control.[2]
(c) Some readers of the newspaper may believe the newspaper and stop using
condoms during sexual intercourse. Explain how a decrease in the use of condoms
may lead to an increase in the
incidence of HIV. [2]
Q6 (a) Annelids and nematodes are both worm-like animals.
State two features that distinguish annelids from nematodes. [2]
(b) Fungi are a difficult group to classify because they have features found in both
animals and plants.
State one ‘animal feature’ and one ‘plant feature’ that fungi possess. [2]
Q7 Ahmed entered a very dark room. His irises responded by changing the pupil size
andgradually he could see shapes of objects in the room. Dust in the air made him
sneeze.
Suddenly the door slammed shut, causing his heart beat to speed up. He switched
on thelight to find the door and he grabbed the door handle……
(a) Complete the table by stating two voluntary actions and two involuntary actions
described in the text above.[4]
(b) Actions are caused by the stimulation of effectors.
(i) Name the two different types of effector in the body. [2]
(ii) State the type of neurone that stimulates effectors.[1]
Q8 (a) Describe the effect sickle cell anaemia has on red blood cells.[2]
(b) (i) The allele for normal haemoglobin production is IN. The allele for sickle cell
haemoglobin production is IS. Two parents who are heterozygous have a child.
With the help of a genetic diagram, predict the probability that this child would be
heterozygous.[4]
(ii) Explain why, under some circumstances, people who are heterozygous for this
condition have a greater chance of survival than homozygous people.[3]
2D
3 C 4 B Q 5(a) penis becomes, firm / erect ;
penis inserted into vagina ;
ejaculation ;
sperm / semen, deposited, in vagina / near cervix ; [max 2]
(b) (i) mechanical / barrier ; A physical [1]
(ii) semen / sperm, collect / trapped, in condom ; A cannot enter female
so fertilisation is not possible / sperm cannot reach egg or oviduct / AW ;
A male gamete for sperm R ‘sperm cannot reach ovary’ [2]
(c) (i) 1
1D
HIV transmitted in, semen / vaginal fluids / body fluids / blood ;
from infected to, uninfected / AW, during sexual intercourse ;
condoms, prevent contact between body fluids ; A mixing of body fluids
(no condoms) more unprotected sex / greater chance of infection ; [max 2]
Q6 (a) annelids are segmented ; (or v.v) Ⓐ ref. to rings
annelids have identifiable / terminal + mouth / anus ; (or v.v)
annelids can have clitellum ; (or v.v)
annelids (may) have + chaetae / bristles ; (or v.v) [max. 2]
(b) (animal feature)
ref. to secretion of enzymes / heterotrophic nutrition ;
Ⓐ inability to photosynthesise
ref. to production of glycogen ;
ref. to presence of chitin ; [max. 1]
(plant feature)
presence of cell wall ;
presence of vacuole ; [max. 1]
Q7 (a) (voluntary)
ref. to going into room ;
ref. to switching on light ;
ref. to grabbing door handle ;
(involuntary)
pupils changed size ;
heart beat speeded up ;
ref. to sneezing ; [max. 4]
(b) (i) muscle ;
gland ; [2]
(ii) motor / efferent (neurone) ; [1]
Q8(a) some red blood cells are sickle shaped AW ;
ref. to haemoglobin + distorts at low oxygen concentrations ;
results in less efficient oxygen transport AW ;
cells can block capillaries / become trapped in capillaries / ref. to crisis AW ;
[max. 2]
(b) (i) father = INIS + mother = INIS ;
genetic make-up of gametes stated ;
F1 genotypes stated or shown on diagram ;
probability: 0.5 / 50% / one in two ; Ⓐ 1:1 [4]
(ii) malarial parasite is unable to breed / survive in INIS blood cells ;
so provides protection from malaria ; (or v.v)
parent with ISIS + is likely to die from sickle cell anaemia ;
parent with ININ + is likely to die from malaria ; [max. 3]
[max. 9]