HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Important Questions

Answer each question in ‘One’ sentence only:

Define stock and scion.

Attempt any TWO of the following:

Enlist the applications of tissue culture.

Explain in brief the biogas production process with the help of a labelled figure.

Dead and dried cell mass of microbes having nutritive value is also known as -----------

What is ‘jumping genes’?

From which microbial sources can pectinase be obtained?

Describe any ‘two’ applications of tissue culture technique.

Name the type of animal breeding carried out to produce amule.

Give the economic importance of fisheries. 

Wheat variety 'Atlas 66' is improved for ______.

Erythromycin is obtained from ______.

Answer in ‘one’ sentence : 

From which microorganism is vinegar obtained?

Answer in ‘one’ sentence :

What is fermentation? 

Answer in ‘one’ sentence : 

What is bioaccumulation? 

Give the names and functions of enzymes involved in lactose metabolism in E. Coli. 

Explain selective breeding. Give any 'two' examples and their nutrients obtained by selective breeding. 

Answer in only one sentence of the following question: 

Name the gas which caused the Bhopal gas tragedy in 1984. 

Give the economic importance of fishery.

Wheat -Atlas 66 has high contents of ______.

Saccharomyces cerevisiae is used to produce enzyme ______.