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:

Select the examples of ex-situ conservation:
(A). Zoological parks
(B). Sanctuaries
(C). Seed banks
(D). Cryopreservation of gametes
Choose the correct answer from the options given below:

Which one of the followings is not a method of contraception in females?

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

Which of the following is not a natural method of contraception?

The number of chromosomes in the gamete of a house fly is:

Identify the mammals which live wholly in water:
A. Dolphins
B. Seals
C. Sea Horse
D. Sea cow
Choose the correct answer from the options given below:

When a light of wavelength 150 nm is incident on silver surface a potential of 3.58 V is required to stop the photoelectrons from reaching the collector plate. Find the potential required to stop photoelectrons when a light of wavelength 200 nm is incident on it ?
(Work function of silver is 4.7 eV)

The general solution of the differential equation \(x\frac{d y}{d x}+2 y=x^2,x\neq 0\) is:

The solution set of the inequation \(|2 x-3| \leq 4\) is

We use microbes and microbially derived products almost every day. Bacteria called lactic acid bacteria (LAB) grow in milk to convert it into curd. The dough, which is used to make bread, is fermented by yeast called Saccharomyces cerevisiae. Microbes are used to produce industrial products like lactic acid, acetic acid and alcohol, which are used in a variety of processes in the industry. However, certain bacteria, which grow anaerobically on cellulosic material, produce large amount of methane along with CO2 and H2. These bacteria are collectively called methanogens, and one such common bacterium is Methanobacterium. These bacteria are commonly found in the anaerobic sludge during sewage treatment. Microbes are also used for commercial and industrial production of certain chemicals like organic acids, alcohols and enzymes.
Examples of acid producers are Aspergillus niger (a fungus) of citric acid. You are familiar with the commonly used antibiotic Penicillin. Do you know that Penicillin was the first antibiotic to be discovered, and it was a chance discovery? Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents. It acts by competitively inhibiting the enzyme responsible for synthesis of cholesterol.
Citric acid is commercially obtained by Aspergillus niger, which is a:

The first diffraction minima due to a single slit diffraction is at \(\theta=30^{\circ}\) for a light of wavelength \(5000 \AA\). The width of the slit is

Read the passage carefully and answer the questions
Replacement of a hydrogen atom in a hydrocarbon by an alkoxy or carboxyl group yields a class of compounds known as ethers. Ethers are classified as symmetrical or unsymmetrical on the basis of groups attached to the oxygen atoms. Diethyl ether, a symmetrical ether, has been widely used as an inhalation anesthetic. Ethers can be prepared by acid catalyzed intermolecular dehydration of alcohols and Williamson's synthesis. Acid catalyzed dehydration of alcohols is not generally preferred as it gives a mixture of elimination and substitution products. In Williamson's synthesis, an alkyl halide is allowed to react with sodium alkoxide. Ethers containing substituted Alkyl groups may also be prepared by this method. The C-O bond in ether is weakly polar and is cleaved under drastic conditions with excess of hydrogen halides. In electrophilic substitution, the alkoxy group deactivates the aromatic ring and directs the incoming group to ortho and para positions.
Which is most reactive hydrogen halide for cleavage of ethers?