AIPMT 2011 Mains

Function of companion cells is :

Some vascular bundles are described as open
because these :

The figures (A – D) show four animals. Select
the correct option with respect to a common
characteristic of two of these animals.

Consider the following four statements (A\(-\)D) related to the common frog Rana tigrina, and select the correct option starting which ones are true (T) and which ones are false (F). Statements:
A.  On dry land it would die due to lack of ...

Which one of the following statements is totally wrong about the occurrence of notochord, while the other three are correct?

Ureters act as urinogenital ducts in

Consider the following statements (A)-(D) each
with one or two blanks :
(A) Bears go into _____ (1) ____ during winter to
_____(2)____ cold weather.
(B) A conical age pyramid with a broad base
represents ____(3)_____ human population.

(C...

Biodiversity of a geographical region represents :

The pathogen Microsporum responsible for ringworm disease in humans belongs to the same kingdom of organisms as that of

Bacillus thuringiensis forms protein crystals
which contain insecticidal protein. This protein :

Read the following four statements (A-D) about
certain mistakes in two of them :
(A) The first transgenic buffalo, Rosie produced
milk which was human alpha-lactalbumin
enriched.
(B) Restriction enzymes are used in isolation of
DNA from ot...

Silencing of mRNA has been used in producing
transgenic plants resistant to :

Which one of the following techniques made it
possible to genetically engineer living organisms ?

Given below is the ECG of a normal human. Which one of its components is correctly interpreted below?

Which one of the following is a possibility for most of us in regard to breathing, by making a conscious effort?

Bulk of carbon dioxide (CO2) released from body tissues into the blood is present as

At metaphase, chromosomes are attached to the spindle fibres by their

Which one of the following is not considered as
a part of the endomembrane system ?

The figure below shows the structure of a
mitochondrion with its four parts labelled (A),
(B), (C). and (D) Select the part correctly
matched with its function. –

The 24 hour (diurnal) rhythm of our body such as the sleep-wake cycle is regulated by the hormone

Which one of the following correctly represents the normal adult human dental formula?

One of the constituents of the pancreatic juice which is poured into the duodenum in humans is

Both, hydrarch and xerarch successions lead to :

Which one of the following animals may occupy
more than one trophic levels in the same
ecosystem at the same time ?

The breakdown of detritus into smaller particles
by earthworm is a process called

''Good ozone'' is found in the :

Uricotelic mode of excreting nitrogenous wastes is found in

Which one of the following options gives the
correct matching of a disease with its causative
organism and mode of infection ?

Common cold is not cured by antibiotics
because it is :

What happens during fertilization in humans
after many sperms reach close to the ovum?

About which day in a normal human menstrual
cycle does rapid secretion of LH (popularly
called LH-surge) normally occurs?

The type of muscles present in our

Read the following statement having two blanks
(A and B) :
''A drug used for ______ (A)___ patients is obtained
from a species of the organism ______ (B)___ ''.
The one correct option for the two blanks is :

Which one of the following is a wrong matching
of a microbe and its industrial product, while the
remaining three are correct ?:

Consider the following statements (A-D) about
organic farming :
(A) Utilizes genetically modified crops like Bt
cotton
(B) Uses only naturally produced inputs like
compost
(C) Does not use pesticides and urea
(D) Produces vegetables rich...

Which one of the following is not an essential mineral element for plants while the remaining three are?

The unequivocal proof of DNA as the genetic
material came from the studies on a :

Sweet potato is homologous to

Whorled, simple leaves with reticulate venation are present in

Which one of the following pairs is wrongly matched while the remaining three are correct?

Which one of the following figures represents
the placentation in Dianthus?

The logistic population growth is expressed by
the equation :

Which one of the following is essential for
photolysis of water?

In kranz anatomy, the bundle sheath cells have

Consider the following four statements whether they are correct or wrong.
A.   The sporophyte in liverworts is more eleborate than that in mosses.
B.    Salvinia is heterosporous.
C.   The life-cycle in all seed-bearing plants is diplonti...

Examine the figure given below and select the
correct option giving all the four parts (A, B, C
and D) rightly identified.

Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because

Which one of the following conditions of the
zygotic cell would lead to the birth of a normal
human female child ?

Test cross in plants or in Drosophila involves
crossing :

The technique called gamete intrafallopian
transfer (GIFT) is recommended for those
females :