HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Important Questions

All organisms produce more young ones. Comment

Define ‘reproductive isolation’ and explain two types of reproductive isolation.

Answer the following question in ‘One’ sentence only:

Define ‘mutation breeding’.

Answer each question in ‘One’ sentence only: 

Identify which one of the following is a test cross. 

From the visible spectrum of light, which component is reflected by the given leaves? 

What is ‘gene flow’?

Write a note on Cro-magnon man. 

What is the scientific name of the modern man?

Very short answer question.

Name the ancestor of human which is described as a man with an ape brain.

Long answer question.

What is adaptive radiation? Explain with suitable example.

Long answer question.

By taking industrial melanism as one example. Explain the concept of natural selection.

_______ is considered as connecting link between ape and man.

Transfer of a part of chromosome or set of genes to a non-homologous chromosome is called ________.

Define the term ‘Mendelian population’.

Whose fossils were discovered at the site of Shivalik hills, India?

Distinguish New world and old world monkeys based on their tail along with their examples.

What led to better utilization of hands for holding objects effectively and better motor skills?

Describe modern man.

Explain Geographical Isolation

What is chromosomal aberration? Give any two types of aberrations found in the population.