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Exam Duration: 260 Mins Total Questions : 148

1 )

Inorganic nutrients are present in the soil in the form of

(a)
molecules
(b)
atoms
(c)
electrically charged ions
(d)
parasites

2 )

Antiparallel strands of a DNA molecule means that

(a)
one strand turns anti-clockwise
(b)
the phosphate groups of two DNA strands at their ends,share the same position
(c)
the phosphate groups at the start of two DNA strands are in opposite position (pole)
(d)
one strand turns clockwise

3 )

The finches of Galapagos islands provide an evidance in favour of

(a)
special creation
(b)
evolution due to mutation
(c)
retrogressive evolution
(d)
biogeographical evolution

4 )

Brown sugar is

(a)
theophyline
(b)
lorazepam
(c)
methedrine
(d)
diacetyl morphine hydrochloride

5 )

Root thorns characteristically occur in

(a)
Asparagus
(b)
Zizyphus
(c)
Acanthorhiza
(d)
Moringa

6 )

Frogs differ from humans in possessing

(a)
paired cerebral hemisphere
(b)
hepatic poetal system
(c)
nucleated blood RBCs
(d)
hyroid

7 )

Hibiscus rosa-Sinensis fruit is

(a)
dry dehiscent many seeded capsule
(b)
dry indehiscent many seeded capsule
(c)
fleshy indehiscent one seeded capsule
(d)
fleshy dehiscent many seeded capsule

8 )

The ratio between hydrogen and oxygen in a carbohydrate is

(a)
5 : 1
(b)
4 : 3
(c)
3 : 1
(d)
2 : 1

9 )

Which of the following statements is incorrect ?

(a)
At optimum pH, the activity of enzyme is maximum
(b)
Enzymes are not affected by hydrogen ion concentration
(c)
The optimum pH for pepsin is 2.0
(d)
The optimum pH for trypsin 8.8

10 )

Gibberellins do not cause

(a)
shortening of genetically tall plants
(b)
stimulation of seed germination
(c)
promotion of seed germination
(d)
induction of \(\alpha\)-amylase in barley

11 )

The pulse beat is measured by the

(a)
artery
(b)
capillary
(c)
vein
(d)
None of these

12 )

Some reptiles show autotomy which means

(a)
voluntary breaking tail to confuse enemy
(b)
signal for charging
(c)
signal for courtship
(d)
state of starvation prior to death

13 )

The substance which causes doubling of the chromosome is called ?

(a)
Carcinogen
(b)
Teratogen
(c)
Clasteogen
(d)
Colchicine

14 )

Which of the following structures is present characteristically only in mammalian brain?

(a)
Corpus fibrosum
(b)
Corpus callosum
(c)
Corpus luteum
(d)
Corpus striatum

15 )

Pericardial gland of Unio is called

(a)
Johnston's organ
(b)
organ of Bojanus
(c)
Keber's organ
(d)
None of these

16 )

One of the example of the action of the autonomous nervous system is

(a)
knee-jerk response
(b)
pupillary reflex
(c)
swallowing of food
(d)
peristalsis of the intestines

17 )

The fruit type seen in Pisum sativum is

(a)
capsule
(b)
legume
(c)
berry
(d)
schizocarp

18 )

Petrification is the fossilization process in which

(a)
Hard parts like bones shells teeth and trunk of trees are preserved
(b)
The entire organism is entrapped in preservatives like ice, amber fossil fuel etc
(c)
The impressions of the organism is preserved by sedimentation
(d)
The soft parts are preserved by sedimentation

19 )

Root system in a plant is well developed

(a)
due to deficiency of auxins
(b)
due to deficiency of cytokinins
(c)
due to deficiency of minerals
(d)
for increased absorption of water

20 )

Function of iris is to

(a)
move lens forward and backward
(b)
refract light rays
(c)
bring about movements of eyelids
(d)
alter the size of pupil

21 )

Match between the following representing parts of the sperm and their functions and choose the correct option.

Column A	Column B
A. Head	(i) Enzymes
B. Middle piece	(ii) Sperm motility
C. Acrosome	(iii) Energy
D. Tail	(iv) Genetic material

(a)
A-(ii), B-(iv), C-(i), D-(iii)
(b)
A-(iv), B-(iii), C-(i), D-(ii)
(c)
A-(iv), B-(i). C-(ii), D-(iii)
(d)
A-(ii), B-(i), C-(iii), D-(iv)

22 )

Given figures show the pollen-stigma interaction, where pollen wall proteins are released onto the pellicle of stigmatic papillae, where recognition reaction occurs.

Which of the following statements drawn from given figures is incorrect?

(a)
P indicates compatible reaction in which the pollen tube penetrates the cuticle and grows down the papilla.
(b)
Development of callose plug between the plasma membrane and pectocellulosic layer of stigmatic papillae results in the incompatibility reaction in O.
(c)
A callose plug which appears at the tip of pollen in Q, is dissolved by callase enzyme secreted by stigma resulting in compatibility reaction.
(d)
Deposition of callose can be employed as a reliable bioassay to detect compatibility or incompatibility reactions of pollen and stigma.

23 )

Biopatents are
(i) right to use invention
(ii) right to use biological entities
(iii) right to use products
(iv) right to use process

(a)
(i) and (ii)
(b)
(ii) only
(c)
(i), (ii) and (iv)
(d)
(i), (ii), (iii) and (iv)

24 )

Synthesis of complex organic substances from simple inorganic raw materials in the presence of sunlight and chlorophyll is called as __________, which is a ___________ process.

(a)
photosynthesis, anabolic
(b)
photosynthesis, catabolic
(c)
respiration, anabolic
(d)
respiration, catabolic

25 )

The number of nephrons in a kidney is equal to

(a)
the number of Bowman's capsules
(b)
the sum of Bowman'scapsulesand Malpighian bodies
(c)
the sum of Bowman's capsules and glomeruli
(d)
double the number of Bowman's capsules.

26 )

Read the following statements and select the correct option.
Statement 1 : Dental formula gives the number of teeth in the half of each jaw.
Statement 2 : Dental formula can be expressed for insectivorous mammals as well as for the nonmammalian vertebrates.

(a)
Both statements 1 and 2 are correct.
(b)
Statement 1 is correct but statement 2 is incorrect.
(c)
Statement 1 is incorrect but statement 2 is correct.
(d)
Both statements 1 and 2 are incorrect.

27 )

Assertion: On stimulation, a muscle cell releases calcium ions (Ca2+) from sarcoplasmic reticulum.
Reason : By reacting with a protein complex, Ca²⁺ uncover active sites on the actin filaments.

(a)
If both assertion and reason are true and reason is the correct explanation of assertion
(b)
If both assertion and reason are true but reason is not the correct explanation of assertion.
(c)
If assertion is true but reason is false.
(d)
If both assertion and reason are false.

28 )

Deficiency of which of the following elements delay flowering in plants?