The term 'Linkage' was given by

Match List-I with List-II

List-I (Terms)	List-II (Explanation)
(A) Secondary productivity	(I) The amount of biomass or organic matter produced per unit area over a time period by plants
(B) Net primary productivity	(II) The rate of formation of new organic matter by consumers
(C) Gross primary productivity	(III) The available biomass for the consumption to heterotrophs (herbiviores and decomposers)
(D) Primary production	(IV) The rate of production of organic matter during  photosynthesis

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Forest, grassland and desert are examples of :

Read the passage carefully and answer the given questions.
Recombinant DNA Technology
Asexual reproduction preserves the genetic information, while sexual reproduction permits variation. Traditional hybridization procedures used in plants and animals breeding very often lead to inclusion and multiplication of undesirable genes along with the desired genes. The techniques of genetic engineering, which include creation of recombinant DNA, use of gene cloning and gene transfer, overcome this limitation and allow us to isolate and introduce only one or a set of desirable genes without introducing genes into the target organism.
Which one of the following techniques is used to amplify a specific DNA
sequence?

Which one of the following statements is not true with reference to AIDS infection in human beings?

Expand "GEAC":

Residual and persistent nucellus present in some seeds is called:

Consider the LPP, optimize \(Z=x+5 y\) subject to \(x+y \geq 5 ; 2 x-5 y \geq 10, x \leq 2 ; x \geq 0, y \geq 0\), then which of the following is correct?

Match List I with List II

LIST I	LIST II
A. Furacine	I. Non-narcotic
B. Antihistamines	II. Artificial Sweetener
C. Alitame	III. Antiseptics
D. Aspirin	IV. Terfenadine

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Answer the question on basis of passage given below :
Molecular nitrogen is very little reactive chemically. During lightning discharge, atmospheric nitrogen and oxygen combines to form nitric oxide which also combines with oxygen to form nitrogen dioxide. Both NO and \(NO _2\) constitute smog which is very poisonous. It can cause burning sensation in the eyes and adversely affect respiratory system.
What is the value associated with control of photo chemical smog?

On simplifying \(\cot \left(2 \tan ^{-1} x\right)\) where \(|x|<1\), we get:

The value of \(\left|\begin{array}{ccc}7! & 8! & 9! \\ 8! & 9! & 10! \\ 9! & 10! & 11!\end{array}\right|\) is :

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The term vitamin was coined from the word vital +amine since the earlier identified compounds had amino groups. Later work showed that most of them didn't contain amino groups. They are very essential for the body. They has to be taken various diet or in the form of medicines also.
Vitamins are classified into two groups depending upon their solubility in water or fat.
Fat soluble vitamins are soluble in fat and oils but insoluble in water. They are stored in liver and adipose (fat storing) tissues Water-soluble vitamins are soluble in water. These must be supplied regularly in diet because they are readily excreted in urine and cannot be stored in our body.
Which vitamin is known as Riboflavin?