HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions for Biology

add a note on deficiency of thyroxine.

Explain the types of chromosomes on the basis of position of centromere.

What is VAM?

Give two examples of microbial pesticides with their hosts.

Which of the following is mesodermal is the origin?

_______ maintains basic metabolic rate.

(A) Thyroxine

(B) ADH

(C) GH

(D) Oxytocin

Name of the valve between the left atrium and left ventricle and give its significance.

Describe the structure of chromosomes with a suitable diagram.

What is Sinus arrhythmias?

Classify the chromosomes on the basis of position of centromere.

Explain with the help of a suitable diagram conducting system of human heart.

Distinguish between X and Y chromosomes.

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

Answer in only one sentence of the following question: 

Mention the role of the pacemaker in human heart. 

Describe the structure of sex-chromosomes. 

Multiple choice question.

Which one of the following is a set of discrete endocrine glands?

Short Answer Question.

Explain the chromosomal theory of inheritance.

Write a note on biocontrol agents.

Long answer question.

What is adaptive radiation? Explain with suitable example.

Define vernalization.