Mnximu m M ark!

> : 80
Tim~ allowed : Two hours
., s ,u·1· io this Pupc_r must be written on the paper provide d separate ly .
11
You will not be allowed to write during IS minutes
. . This time is to be spent in reading the questio n pape;.
l'he urne given at the head of this Paper is the time allowed f or wn·t·mg t he answers .

-r1 Section
· d A is compul sory. Attemp t any four quest· - ions, t'rom Sechon
. B
'.1e mten ed marks for questio ns or parts of ques·t·ions. ~re given
. .m bracket.s ( ).

SECTI ON A
( Attempt all questions from this Section.)

Questi on 1
Sc' l~ct the correct answers to the questions from the . .
\\ .tte the correct answer only .) given options . ( Do not copy the question .
(15)
%The ~i t~ of maturation of human sperms is the
o/ Semrmferous tubules b. Interstitial cells ,c. Epididy mis d. Prostat e g\and
(£1) The numbe r of spinal nerves in human s
~ - 12 pairs b. 23pair s •·c. 31 pairs d. 10 pairs ·
fiif1' The hormo ne that increas es the heart rate is
a. '!)yrox ine · b. Adren aline c. Somat ostatin d. Prolacti.n
(W) The life span of red blood cell is about
a. 90 days , b. 120 days c. 50 days d: 10 days
~Wh ich of these is a protective reflex action?
a. Salivation b. SwaIJowing - , c. Sneezing d. Peristalsis
(vJtA muscular wall is absent in
·a. Capillary b. Venule c. Vein d. Arteriole
cf') The blood vessel from aorta to liver
d. Rena\ artery
a. H5,ratic vein b. Pulmonary vein · c. Hepatic artery
(v4i1J Somatic cells divide by
, a. Mitosis b. Meiosis c. Both of these d. None of these
Gt) An example of non-biodegradable waste is
a. Sewage b. DDT c. Vegetable peel d. Livestock waste
(@. plant cell may burst when
a. Turgor pressure equalises wall pressure
b. Turgor pressure exceeds wall pressure
c. \Val I pressure exceeds turgor pressure
d. None of the above
(4 The prime source of CFCs is
a. Vehicular emissions
b. Industrial effluents
J1,.u~,

)omestic sewage
.~efrigeration equipment
YJ ~eth Y1ated spirit is used to dissolve
,~01sture b. Chlorophyllt c. CO2 d. 02
r11) The repetitive units of DNA is
-~.~cleosome ' b. Nucleoside x c. Nucleotide X d. Nucleolus "
,~) T~e plant ho1mone that regulates stomata! closure is .
a. Auxm b. Cytokinin c. ABA' d. Gibberellins
(y.f) Part of the ear associated with balance is
a. Cochlea b. lncus c. Semicircular canal· d. Pinna

Question 2 (5)
V) State the ex~c; location of the fol2wing structures. . gland fHydal h0 des
f.. Stoma y. Yellow spot y.GJomerulus /,Adrenal
5 d
ei!her fir5l or la l wof' (S)
(ii) State true or False. [f false, rewrite the corrected statement by changing
oniv.
/;=entromere is the organelle of the cell that initiates ce11 division.
V. Yrethra carries urine from kidney to urinary bladder. _ .. .
~Astigmatism is corrected by cylindrical lens. atwn.
uterine wall is called tertil1z
JY.The process of attachment of the blastocyst to the
,t1ericardium is the membrane enclosing the heart.
(5)
(iiQ Name the following: .
1Je onset of menstrual cycle in ~iris. .
nitrogenous base present only m DNA . .
he mineral ion responsible for blood clotting.
not expressed in presence of a contrasting allele.
~ he type of gene which is
he part of testis which produces sperms . Str,i ~1., 1c
11

the remaining three belong: (5)

(iv) Identify the odd term. in each set an~ name.the category to which · ·
,I.cortisone, Somatotrop111, Adrenocort1cotrop1c hormon e, A.DH
\:lfvary, Fallopian tube, Ureter, Uter:us .
c;Alaemogiobin. Glucagon, Rhodops111, Jodopsm
JY.Basophil, Neutrophil, Eosinophil, Lymphocyte
tfa'8ergents, Sewage, X-rays, Oil spills
to be in a logical sequence
Arrange and rewrite the terms in each group in a correct order so as
(v)
(5)
be~nning with the term that is underlined.
'0(Lens , Pupil. Yellow spot, Cornea
VAssociation neuron, Effector, Receptor, Sensory neuron
ciAomernlus. Efferent arteriole, Afferent arteriole, Renal artery
t,f-ndrites, Synaptic bulb, Cell body, Axon
_ _, S men. Sperm duct, Penis

SECTION B
( Attempt any four questions from this Section)

Que~on 3 ;
c.,,-W)11 tis mutation'? (1)
te two significance of transpiration. (2 )
constricting pupil.
~): _ne the mu~cles of iri_s w_hich are responsible for widen ing and (2)
(lf'wnte two 111a.1or reasons of populat ion explosion in India. (2)
rr: JA IMOLOc.i~
~e a plant homozygous for Inflated Green pods is
J1t 6
crossed v, ith a pea pIant homozygous for Yellow
.. Constricted pods. (2)
(a) Give the phenotype and genotype of the offsp
rings of Fi generation.
(l)
n.
(b) Write the phenotypic ratio of the F2 generatio

Question 4 (I)
(i) Ddine gestation. (2)
,ii, Write the harmful effects of acid rain.
r but practically. none of haemophiliac females.
\iii) Rare cases of haemophiliac males do occu (2)
- Give reason. (2)
\i, ) Name the nitrogen bases that have doub
le hydrogen bonds between them.
w:
y the diagram and answer the questions that follo
\, ) The diagram shown is a L.S. of testis. Stud

2 ---+ ---1

(2)
a. Labe l the parts I and 3. (I)
b. \lvrite the function of part 2.

\ Qu,l stion 5 _,,,

(j.Y)Jv'rite the full ~arm of l~A.
. .
ret1cullim makes RBC
,
s more
··

effic ient. _ Give reaso

(\)
n. (.2)
iif ;_bsence of m1tochondr1a and endop_lasm,c ~xyt o~in , . . , (2)
entio n :he sour ce gfaJld and funct1~n of (2)
(
on t~e bas,_s of d1rect1on of blood flow .
(~ Rifferentiare_between Arter~ and Ve1~
(~:;;i ~e~~w ,s a representation o: a km~_
ot ~?!!.~!K~~:-S!U?_t_the same _~~? answer the questions
11

(I)
(~n tity the kind of pollution. (2)
tion.
(e0"ention two harmful effects of this pollu

Question 6 / ( l)
~n e synapse. (2)
~i te the changes in light adaptation . . (2)
(ill)IWrite the location and function ofcorona
ry artery.
 '1 'I
U. 1

l-'1--- Slrong sugar

solution

Tap water

~---:.,,--,,,,.'7"- Cellophane

,Jy\ ame the process. (I)

~,,tfine the above named process. (I j
(cv~.ihat would you observe in the experimental set up after few hours? (I)

Question 7
(I)
1 i) Explai n the term parthenocarpy.
(2)
ii) What are the two main effects of cretinism. (2)
1iii) Mention 1-wu \,\ays in which spinal cord is protected in our body.
(2)
,~\ ) 1 wins may or may not be identical. - Explain. (3)

(
' ,-
~ (, ) Draw a labelled diagram of a nephron.

(1)

r
Q~tion 8 /
I
.: D. rme demograp_ny. . 1
, • • in 2014.

~ame the cleanliness campaign started by the Government of lnata (2)

Yrhat 1s ODF India? (2)
r~;~ame two male accessory glands. (2)
(i\A 'write the fu nctions of vestibule and ear ossicles. . .
('1(}bserve \he diagram given below and answer the questions that Jollow.

(a) Label the parts I and J. (2)

(b) What are the three parts col/ecti vcly called? (I)