Which of the following microbe serves as an important biofertiliser in paddy field?

DNA fragments can be separated by a technique known as:

Which of the following is NOT a characteristic of an ideal contraceptive?
(A) It should be user friendly
(B) It should be easily available
(C) It should be irreversible
(D) It should be with no or least side effects
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The broadly utilitarian argument says that -

Choose the correct statements about organic farming:
(A) It does not use pesticides and urea.
(B) It uses only naturally produced inputs like compost.
(C) It utilizes genetically modified crops.
(D) It produces fruits rich in minerals and vitamins.
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Match List - I with List - II.

LIST I	LIST II
(A) Metabolic Disorder	(I) Family tree over generation
(B) Pedigree analysis	(II) Blood disease
(C) Thalassemia	(III) Phenylketonuria
(D) Trisomy of 21st chromosome	(IV) Down's Syndrome

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Match List I with List II.

List I (Example)	List II (Name of Interaction)
A. Sea anemone and clown fish	I. Competition
B. Lichens	II. Commensalism
C. Lice and Human	III. Mutualism
D. Flamingoes and resident fishes in South American lakes	IV. Parasitism

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Read the passage carefully and answer the Questions
In the formation of coordination complexes, if the inner \(d\) orbital \((n-1) d\) is used in hybridisation, the complex, is called an inner orbital or low spin or spin paired complex. And if it uses outer \(d\) orbital ( \(n d\) ) in hybridisation (like \(s p^3 d^2\) ), it is called outer orbital or high spin or spin free complex. The degeneracy of the \(d\) orbitals has been removed due to ligand electron-metal electron repulsions in the complex. This splitting of the degenerate levels due to the presence of ligands in a definite geometry is termed as crystal field splitting. For coordination complexes, the magnetic moment is determined by the number of unpaired electrons and is calculated by using the 'spin-only' formula, \(\mu=\sqrt{n(n+2)}\) where \(n\) is the number of unpaired electrons and \(\mu\) is the magnetic moment in units of Bohr magneton (BM). The coordination compounds are of great importance. These compounds are widely present in the mineral, plant and animal worlds and are known to play many important functions in the area of analytical chemistry, metallurgy, biological systems, industry and medicine.
The CFSE for tetrahedral \(\left[ CoCl _4\right]^{2-}\) is \(8000 cm^{-1}\), the CFSE for octahedral \(\left[ CoCl _6\right]^{4-}\) will be........

For the matrix \(A=\left[\begin{array}{ccc}2 & -1 & -1 \\ 0 & 2 & 3 \\ 1 & -2 & 1\end{array}\right]\), which of the following statements are correct?
(A) The order of the matrix is 3 × 3
(B) |A| = 21
(C) |adj A| = 225
(D) A is skew symmetric matrix
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Identify, which is not the example of homology in evolution.

In the exponential growth model equation dN/dt= rN 'N' stands for:

In water hyacinth, pollination is carried out by -
(A). Wind
(B). Water
(C). Insects
(D). Animals
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The area (in sq.units) of the region enclosed by the curve \(y = cos\) \(x\), \(-\frac{\pi}{2} \leq x \leq \frac{\pi}{2}\) and the \(x\) - axis is: