AIPMT 2007

In the leaves of C4 plants, malic acid formation during CO2 fixation occurs in the cells of

The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is

Opening of floral buds into flowers, is a type of

Which one of the following pairs, is not correctly matched?

The wavelength of light absorbed by Pr form of phytochrome is

Spore dissemination in some liverworts is added by

In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result

In gymnosperms, the pollen chamber represents

Flagellated male gametes are present in all the three of which one of the following sets?

If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?

A human male produces sperms with the
genotypes AB, Ab, AB, and ab pertaining to two
diallelic characters in equal proportions. What is
the corresponding genotype of this person ?

Inheritance of skin colour in humans is an
example of:-

In pea plants, yellow seeds are dominant to
green. If a heterozygous yellow seeded plant is
crossed with a green seeded plant, what ratio of
yellow and green seeded plants would you
expect in F1 generation ?

In the hexaploid wheat, the haploid(n) and
basic(x) numbers of chromosomes are :

A common test to find the genotype of a hybrid
is by:-

The overall goal of glycolysis, Krebs' cycle and the electron transport system is the formation of

All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is

Two plants can be conclusively said to belong to the same species if they

Male gametes in angiosperms are formed by the division of

Which one of the following is surrounded by a callose wall?

In cloning of cattle a fertilized egg is taken out
of the mother's womb and:-

Which one of the following is a viral disease of
poultry ?

In maize, hybrid vigour is exploited by:-

Compared to a bull a bullok is docile because of:-

Which one of the following pairs of structures
distinguishes a nerve cell from other types of cell ?

In which one of the following preparations are
you likely to come across cell junctions most
frequently ?

ICBN stands for

The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for

Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will...

In the reaction :

Which of the following compounds will be formed?

The product formed in Aldol condensation is

Which one of the following on treatment with 50% aqueous sodium hydroxide yields the corresponding alcohol and acid?

Consider the following compounds

The correct decreasing order of their reactivity towards hydrolysis is

Reduction of aldehydes and ketones into hydrocarbons using zinc amalgam and conc. HCl is called

Which of the following represents the correct order of the acidity in the given compounds ?

RNA and DNA are chiral molecules, their chirality is due to

Which of the following vitamins is water-soluble?

In which of the following pairs, the two species are isostructural?

The correct order of C \(-\) O bond length among CO, CO\({_3^{2 - }}\), CO2 is

The equilibrium constants of the following are
N2 + 3H2 \(\rightleftharpoons\) 2NH3;     K1
N2 + O2 \(\rightleftharpoons\) 2NO;     K2
H2 + \({1 \over 2}\)O2 \(\rightleftharpoons\)
H2O;     K3
The equilibrium constant (K) of the rea...

The reaction of hydrogen and iodine monochloride is given as :
H2(g) + 2ICl(g) \(\to\) 2HCl(g) + I2(g)
This reaction is of first order with respect to H2(g) and ICl(g),
following mechanisms were proposed.
Mechanism A :
     H2(g) + 2ICl(...

If 60% of a first order reaction was completed in 60 minutes, 50% of the same reaction would be completed in approximately
(log 4 = 0.60, log 5 = 0.69)

In a first-order reaction A \(\to\) B, if k is rate constant and initial concentration of the reactant A is 0.5 M, then the half-life is

The d electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d5, 3d6 and 3d8 respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour?
(At. No. Cr = 24, Mn = 25, Fe = 26, Ni = 28)

Which of the following will give a pair of enantiomorphs?
(en = NH2CH2CH2NH2)

Which one of the following ions is the most stable in aqueous solution?
(At. No. Ti = 22, V = 23, Cr = 24, Mn = 25)

Identify the incorrect statement among the following:

The equilibrium constant of the reaction:
Cu(s) + 2Ag+(aq) \(\to\) Cu2+(aq) + 2Ag(s);
Eo = 0.46 V at 298 K is

The efficiency of a fuel cell is given by

CH3 \(-\) CHCl \(-\) CH2 \(-\) CH3 has a chiral centre. Which one of the following represents its R-configuration?