AIIMS SCALE UP
11 .Choose the correct statement.
(a)Leaf abscission is caused by gibberellin
(b)The rosette habit of cabbage can be changed by
application of gibberellic acid
(c)NAA is a synthetic auxin
(d)Both (b) and (c)
12 .The reason behind lowering of rate of transpiration
during storm is
(a) low temperature during storms
(b) high velocity of winds
(c) the presence of moisture in winds
(d) All of the above
13 .If cell A with OP= 5 and TP= 4 is surrounded by cells
with OP and TP= 1 , what will be the action of water
movement?
(a) Water will move up (b) Water will not move up
(c) From other cells to cell A (d) From, cell A to other cells
14 .An example of competitive inhibition of an enzyme is
the inhibition of
(a) succinic dehydrogenase by malonic acid
(b) cytochrome oxidase by cyanide
(c) hexokinase by glucose-6-phosphate
(d) carbonic anhydrase15 .Which of the following is not a lateral meristem?
(a) Intercalary meristem
(b) Phellogen
(c) Intrafascicular cambium
(d) Interfascicular cambium
16 .Match column I with column II and select the correct
option from the codes given below.
Column I (Organelle) Column II (System)
A. Mitochondria 1. Light harvest system
B. Chloroplast 2. Cytoskeleton
C. Endoplasmic reticulum 3. Electron transport system
D. Peroxisome 4. EMP system
- Photorespiratory system
Codes
A B C D A B C D
(a) 3 2 1 4 (b) 3 1 2 5
(c) 4 1 3 2 (d) 3 2 4 1
17 .In an accident a person’s abducens nerve is injured.
Which one of the following functions will get affected?
(a) Movement of neck
(b) Movement of the eye ball
(c) Swallowing
(d) Movement of hand and leg
18 .The first electron acceptor from an excited chlorophyll
molecule of photosystem-II is
(a) ferredoxin (b) iron-sulphur protein
(c) plastoquinone (d) cytochrome
19 .Chicory powder, which is mixed with the coffee
powder is obtained from
(a) seeds (b) roots
(c) leaf (d) stems
20 .Gynandrous condition shows
(a) all anthers are united except filament
(b) adhesion of petals with stamens
(c) adhesion of stamens with carpel
(d) stamens are united throughout their whole length.
21 .In case of haemophilia, if the carrier daughter marries
a normal man, then among their daughters
(a) 25% are carrier only
(b) 50% are carrier and 50% are haemophilic
(c) 50% are carrier only
(d) 75% are carrier and 25% are haemophilic
22 .Consider the case of a family with five children. It
shows the inheritance of attached ear-lobes as
opposed to the free ones. The squares represent the
male individuals and circles represent the female
individuals.Which one of the following conclusions drawn is correct?
(a) The parents are homozygous recessive
(b) The trait is Y-linked
(c) The parents are homozygous dominant
(d) The parents are heterozygous
23 .Choose the incorrect statement which is given below.
(a)Cushing syndrome is caused due to the increased
production of cortisol
(b)Small in size and variable in structure is the feature of fatty
acids based hormones
(c)Ecdysone helps in metamorphosis in insects
(d)Calcium level decreases in the blood due to hyposecretion
of parathormone
24 .The further treatment of fibres with saturated salt
solutions removes actin and its two associated proteins
tropomyosin and troponin and also destroy the
I-bands. This shows that the thin filaments are made
up of protein/s
(a) tropomyosin and troponin
(b) myosin
(c) actin
(d) tropomyosin + troponin + actin
25 .The concept of chemical evolution is based on the
(a)effect of solar radiation on chemicals
(b)crystallisation of chemicals
(c)interaction of water, air and clay under intense heat
(d)possible origin of life by combination of chemicals under
suitable environmental conditions
26 .Which of the following is wrongly matched?
(a) RNA interference — Gene silencing
(b) Calcitonin — To treat infertility
(c) Removal of C-peptide — Maturation of proinsulin
(d) Hybridoma technology — Monoclonal antibodiesAttached
ear-lobeFree
ear-lobe