In which ecosystem is the biomass of primary consumers greater than producers?

Match List - I with List - II.

List - I (Pathogen)	List - II (Disease)
(A) Wuchereria	(I) Typhoid
(B) Plasmodium	(II) Pneumonia
(C) Streptococcus	(III) Malaria
(D) Salmonella	(IV) Elephantiasis

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Find the odd one out among the following structures?

The type of pollination in which genetically different pollen grains fall on the stigma is known as:

Observe the table and answer the given question :

Identify the amino acids with one codon each?

Match List I with List II

List I	List ll
(A) alpha-1-antitrypsin	(I) Resistant to insect attacks
(B) Transgenic mice	(II) Genetically engineered insulin
(C) Eli Lily	(III) Testing safety of polio vaccine
(D) Bt crops	(IV) Treating Emphysema

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Which of the following disorders are the results of aneuploidy?
(A) Haemophilia
(B) Down's Syndrome
(C) Thalassemia
(D) Turner's Syndrome
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Which one of the following structures is not the male sex accessory duct?

Which of the following statements are correct for dilute solutions?
(A) The elevation in boiling point is directly proportional to the molality of the solution.
(B) The elevation in boiling point is inversely proportional to the molality of the solution.
(C) The depression in freezing point is directly proportional to the molality of the solution.
(D) The depression in freezing point is inversely proportional to the molality of the solution.
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Read the passage carefully and answer the Questions
Aldehydes and ketones are important organic compounds prepared mainly by oxidation of alcohols. Primary alcohols give aldehyde and secondary alcohols yield ketones. Aldehydes can also be formed by partial reduction of acid chlorides, reduction
of esters or by Gattermann-Koch reaction. Ketones are prepared by Friedel-Craft's acylation, hydration of alkyne and reaction of Grignard's reagent with nitriles. Chemically, aldehydes and ketones are reactive in nature due to the carbonyl group and undergo nucleophilic addition reactions. Aldehydes are more reactive than ketones and can be oxidized to carboxylic acids, while both can be reduced to alcohols or hydrocarbons and exhibit condensation reaction.
Hydration of propyne in the presence of \(H _2 SO _4\) and \(HgSO _4\) gives

Which one of the followings is responsible for producing the large holes in "Swiss cheese"?

dentify the correct statement(s) among the following:
(A) An electric bulb connected with a capacitor in series with electric DC source, glows with full brightness.
(B) An electric bulb connected with capacitor in series with an AC source, does not glow.
(C) An electric bulb connected with capacitor in series with a electric DC source, does not glow.
(D) An electric bulb connected with capacitor in series with an AC source, glows well.
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Answer the question on the basis of passage given below :
Formaldehyde is the first member of the aldehydic series. It is present in green leaves of plants where its presence is supposed to be due to the reaction of \(CO_2\) with water in the presence of sunlight and chlorophyll. Commercially, formaldehyde is obtained by the controlled oxidation of methane in the presence of molybdenum oxide (\(MoO\)) acting as a catalyst. Formaldehyde is a constituent of a number of polymers also called resins. These are non volatile solids or semi solids which are obtained directly from certain plants and can be synthesized in the laboratory.
Benzaldehyde is less reactive towards nucleophilic addition reaction than formaldehyde because of: