HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions for Biology

Agricultural water pollution and Shipping water pollution. 

The help of a well-labelled diagram describes the internal structure of the human heart.

Erythromycin is obtained from ______.

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

Answer in only one sentence of the following question: 

Mention the role of the pacemaker in human heart. 

Describe the structure of sex-chromosomes. 

Antibiotic Chloromycetin is obtained from ______.

Short Answer Question.

Explain the chromosomal theory of inheritance.

Most commonly used substrate for industrial production of beer is ___________.

Ethanol is commercially produced through a particular species of ______.

MOET technique is used for _____________.

What is the microbial source of vitamin B₁₂?

What is the microbial source of enzyme Invertase?

Name the enzyme produced by Streptococcus bacterium? Explain its importance in medical Science?

Name any two enzymes and antibiotics with their microbial source.

What are A, B, C, and D in the table given below :

Long answer question.

What is adaptive radiation? Explain with suitable example.

Define vernalization.

Short Answer Question:

Give its significance of vernalization.

______ is known as pacemaker of heart.