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

Name the reservoir and sink of carbon in the carbon cycle.

Describe the carbon cycle and add a note on the impact of human activities on the carbon cycle.

Short Answer Question:

Write a short note on Differentiation.

Short Answer Question:

Write a short note on Re-differentiation.

Name biofortified wheat variety for high protein content.

Name two amino acids found in fortified Maize variety?

Mention one example each of fortification with reference to –

1. Amino acid content
2. Vitamin-C content

Write drawbacks of Darwin's theory

Distinguish between directional, stabilizing and disruptive selection.

Distinguish between Vasa efferentia and Vasa deferentia.

What is differentiation?

What is redifferentiation?

Mating of two closely related individuals within the same breed is called ______.

(a) In-breeding

(b) Out-breeding

(c) Out-crossing

(d) Cross-breeding

Visit of a veterinary doctor to dairy farm is mandatory. Give reasons.

Give the economic importance of ‘fisheries’

In____________ , superior males of one breed are mated with superior females of another breed.

1. out crossing
2. cross breeding
3. out breeding
4. inbreeding

Give 'two' varieties of silk which are considered  as inferior quality

With the help of a neat, labelled diagram describe the human male reproductive system.

Mention any ‘two’ methods used to prevent spoilage of fish

Give economic importance of apiculture