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

Name the embryonic layer from which heart, blood, and blood vessels develop.

Write a note on the four different kinds of cell in Pancreas.

Write an account of cleavage during embryonic development in humans.

Write a note on implantation.

When a drug addict is not allowed to take drugs he shows certain typical symptoms. What are these symptoms termed as? 

In human beings 45 chromosomes/single X/XO abnormality causes ______.

Webbed neck is characteristic of ______ syndrome.

What is the reason for the 21^st trisomy?

Give a detail account of thalassemia.

Write a note on Down’s syndrome.

What are the different characters that develop due to Klinefelter's syndrome?

Give reasons for the development of Turner’s syndrome and also mention its symptoms.

Give an account of one Mendelian and one chromosomal disorder you have studied.

Identify the trophoblast cells which are in contact with the embryonal knob during blastulation.

Identify chromosomal disorder caused due to non-disjunction of the 21^st number of chromosomes and enlist its symptoms.

Identify 'A' in the chart given below.

Name some drugs which are commonly abused?

Mention the names of any two organs each derived from ectoderm and mesoderm.

Write effects of alcohol abuse.

Give definition of non-disjunction.