Which of the following factors can influence Hardy-Weinberg equilibrium?
(A) Natural Selection
(B) Genetic recombination
(C) Gene flow
(D) Mutation
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Match List-l with List-II

List-l (Scientists)	List-II (Discoveries)
(A) Frederick Griffith	(I) Genetic Code
(B) Francois Jacob and Jacque Monad	(II) Semi-conservative mode of DNA replication
(C) Har Gobind Khorana	(III) Transformation
(D) Meselson and Stahl	(IV) Lac operon

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Which of the following is TRUE for gel electrophoresis ?
(A) It is used to separate DNA fragments.
(B) Separation of DNA occurs on the basis of the fragment size.
(C) Separation of DNA fragments occurs on the basis of charge.
(D) Separated DNA fragments can be visualised without staining.
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Which of the followings belong to false fruit category?
(A). Apple
(B). Cashew
(C). Strawberry
(D). Orange
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The flowers which do not open at all are known as:

Identify the statements which are true for oogenesis.
A. Large number of primary follicles degenerate during the phase from birth to puberty.
B. Antrum a fluid filled cavity surrounded by a new theca is seen in primary follicles.
C. At puberty only 6×105-8×105 primary follicles are left in each ovary.
D. Oogonia are formed in fetal ovary.
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Read the following paragraph and answer the given questions.
Bio-fertilisers are organisms that enrich the nutrient quality of the soil like cyanobacteria, while there are organisms that help to control plant diseases and pests. The very familiar beetle, the ladybird and dragonflies are useful to get rid of aphids and mosquitoes, respectively. An example of microbial biocontrol agents that can be introduced to control butterfly caterpillars is certain bacteria, which are available in sachets in the form of dry spores. These spores are mixed with water and sprayed onto vulnerable plants. Trichoderma species that are very common in the root ecosystem, are very effective biocontrol agents of several plant pathogens.Baculoviruses attack insects and other arthropods. Usage of these viruses is desirable when an ecological sensitive area is being treated.
Find the odd one out of the given organisms?

Light of frequency \( 8.27 \times 10^{14} \text{ Hz} \) is incident on a metal surface. Electrons with maximum speed \( 6.6 \times 10^5 \text{ m/s} \) are ejected. The threshold frequency for photoemission of electrons will be (given \( h = 6.6 \times 10^{-34} \text{ Js} \), and mass of electron = \( m_e = 9 \times 10^{-31} \text{ kg} \)) :

In a diffraction from a single slit of width 0.30 mm, first order maxima is found with light of wavelength \( 6000 \text{ \AA} \). The angular spread of first order maxima on either side of the central maxima is:

The value of c in Rolle's theorem for the function \(f(x)=x^3-3 x\) in the interval \([0, \sqrt{3}]\) is :

The absolute maximum value of the function \(f(x)=4 x-\frac{1}{2} x^2\) in the interval \(\left[-2, \frac{9}{2}\right]\) is

Arrange the following electromagnetic waves in the increasing order of their wavelength.
(A) X-rays
(B) Radio waves
(C) Gamma rays
(D) Microwaves
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The standard potential of the cell ( \(E_{\text {cell }}^{\ominus}\) ) is related to the equilibrium constant ( \(K_C\) ) as