HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions for Biology

Match the Respiratory surface to the organism in which it is found.

Very short answer question.

Why is respiration in insect called direct respiration?

Short answer question.

Identify the incorrect statement and correct it,

a. A respiratory surface area should have a large surface area.

b. A respiratory surface area should be kept dry.

c. A respiratory surface area should be thin, maybe 1mm or less.

Diffused type of nervous system is seen in ______.

Wheat -Atlas 66 has high contents of ______.

The technique which involves addition or deletion of genes is ______.

ECoRI is obtained from ______.

The enzyme restriction endonuclease ______.

Ti plasmid being used for introducing genes in plants obtained from ______.

Polymerase chain reaction is most useful in ______.

What is plasmid?

What is Palindromic sequence?

Alu-I is obtained from which organism?

What is the role of Taq-polymerase in PCR technology?

Bt-cotton shows adverse effect on the population of which butterfly?

Define vector? write any two examples,

Define biotechnology? Which are the basic principles and process of biotechnology?

What is gene cloning? Explain different tools used for it.

Explain types of enzymes used in biotechnology?

What is Recognition sequence? Explain in brief.