Download BIOLOGY -

BIOLOGY
SCIENCE Paper
-3
(Two hours )
Answers to this Puper must be v riuen on the puper provided ,sepuratelt.
You,,*illnot be allov,ecl to \\rit( during theJirsl l5 minufe.;.
This time is to be spem iri reoLiittg the Question Paper.
The time given at the head o-/'this
Pap,.'t
Attempt all questionsfrom Sectiot I
iiie time allov,ed.for writing the ansv,:ers.
odonyfour
questions
from Section II.
TIE intended marks for questians or ftwts of questions are given in brackets I J.
SECTIO\ I (-10 llarks)
.1{t€nt:i oll qi,estions.fron rhi' .\ection
(i)
(ii)
(iii)
The part of the brain associared n'ith memor\'.
The ear ossicle which is attached to the tlmpanum
The type of gene, which in the lrresercc ot' a contrasting alleie is not
expressed.
(iv) The hormone secreted br islets of langerhans.
(v) The process of conversion of ADP into ATP during photosynthe sis.
(b)
State the main tunction of the
t5]
iollos ing:
(i)
(ii)
Eustachian tube.
(iii)
Suspensory ligament of the .'r c
Cerebrospinal.fluid.
(ir) Sperm duct.
(v) Lenticels.
(c)
f51
L*1
Copy and complete the follou,ing b1 tiliing in the blanks
1
to 5 rlith appropriare
words:
The human female gonads are or,'aries. A maturing egg in the ovar,v is present
(i).
in a sac of cells called
enlarges and gets
filled with
a
As the egg gro\\s larger, the follicle
t'luid and is now called
(2)
the
follicle. The process of releasing the egg fiom the ovary is
called
This paper consists of 10 printed pages.
Tl4
523
@ Cop.rright resen'ed
Turn 0ver
The antibiotic penicillin is obtained from:
A.
B.
C.
D.
(v)
Bacteria.
Virus.
Fungus.
'fhe site of maturation of human sperns is the:
A.
B,
C
D.
(h)
Protozoan.
Seminiferous tubule.
Interstitial cells.
Epididymis.
Prostate
gland.
t5l
State the exact location of the follou'ing:
(i)
Tricuspid valve.
(
ii)
Amnion.
(
iii)
Yellow spot.
(iv)
Seminal vesicle
(v)
Adrenal
gland.
i)
SECTION
II
i
(40 Marks)
Attempt any four questions from this Section
Question 2
(a)
Diff'erentiate between the following pairs on the basis of u'hat is mentioned
within brackets:
(i)
(ii)
(iii)
(iv)
(v)
Spinal nerves and Cranial nerves (Number of nerves).
Near vision and Distant Vision (shape of the eye lens)
Corpus callosum and Corpus luteum. (function).
Turgor pressure and wall pressure. (Explain)
Disinfectant and Antiseptic (Definition).
4
Ti4 523
I
I
tsl
(b)
of
The diagram below represents the simplified palhway of the circulation
blood. study the same and answer the questrons that follow:
(r)
Name the blood vessels labelled
(ii)
State the
and 2.
finction of blood vessels labelled 5 and 8'
nce of the blood vessel labelled 6?
(iii)
(iv)
I
Which blood vessel
will
contain a high amount of glucose and amino
acids after a meal?
(v)
Draw a diagrarn of the ditrerent blood cells as seen in a sme4r of human
tsI
Question 3
(a)
A candidate in order to sludy the process of osmosis
has taken 3 potato cpbes
24
and put them in 3 different beakbrs containing 3 different solutions. Aftsr
hours, in the first beaker the potato cube increased in size, in the second beaker
Tt4 523
Tum Over
l
"'-