Somaclones can be defined as:

World Summit on 'Sustainable Development' in 2002 was held in :

Clarias gariepinus, the African catfish is an example of

Identify the condition when more than one pistils are fused together in angiosperms:

The DNA fingerprinting technique is based on -

In the majority of flowering plants, a certain pattern is followed in megaspore mother cell (MMC) undergoing meiosis and producing megaspores. How many functional megaspores would be produced with 32 MMC?

Match List I with List II.

LIST I	LIST II
A. Autogamy	I. Pollination between two flowers present on different plant of the same species
B. Syngamy	II. Pollination between two flowers of the same plant
C. Xenogamy	III. Pollination within the same flower
D. Geitonogamy	IV. Fusion of the nucleus of one male gamete with egg cell nucleus

Choose the correct answer from the options given below:

Which one of the following guides the entry of the pollen tube into the embryo sac?

p-block elements are placed in groups 13 to 18 of the periodic table. Group 15 is nitrogen family. Nitrogen makes various compounds like \(NH _3, HNO _3, N_2 O , NO _2\) etc. Phosphorus exists in the form of white and red phosphorus. White phosphorus glows in dark. \(PH _3\) gas is used as smoke screen. Group 16 is called oxygen family. Dry air contains \(21\% O _2\) gas by volume. Combined sulphur exists as sulphates such as gypsum, epsome salt, baryte etc. The allotropic forms of sulphur are Rhombic and monoclinic sulphur. \(S_2\) is paramagnetic like \(O_2\) and it stable at high temperature.
Group 17 is Halogen family. \(F_2\) is highly reactive, \(Cl _2\) is greenish yellow gas. Both \(SO _2\) and \(Cl _2\) are used for bleaching. Group 18 is Noble gas family but some noble gases also form compounds.
Complete hydrolysis of \(XeF _6\) gives HF and \(XeO _3\) as main products.
Match List - I with List - II.

List - I	List - II
(A) Ammonia	(I) Rotten fish small
(B) Nitric Acid	(II) Detection of metal ions
(C) Phosphene	(III) Chemiluminescence
(D) White Phosphorus	(IV) Ostwald Process

Choose the correct answer from the options given below :

The number of all possible matrices of order \(2 \times 2\) with each entry ' \(a\) ', ' \(b\) ' or ' \(c\) ' is :

A slab of material of dielectric constant \( k \), having the same area as the plate of a parallel plate capacitor but has a thickness \( \frac{3}{5} \) of the distance between the plates \( d \), is inserted between the plates of the capacitor. When there is air between the plates, the potential difference is \( V_0 \). What is the potential difference between the plates of the capacitor after inserting the dielectric?

Converting milk to curd improves its nutritional quality by increasing which of the following vitamins in it:

A current of 10 A in primary of a circuit is reduced to zero at a uniform rate in \( 10^{-3} \text{ s.} \) If coeff. of mutual inductance is 3 H, the induced emf in the secondary would be :