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

If centromere is situated in the middle of the chromosome, it is called ________.

(a) Metacentric

(b) Acrocentric

(c) Submetacentric

(d) Telocentric

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.

Why aquatic animals can afford to be ammonotelic?

Define organic evolution.

Write a note on ‘artificial acquired active immunity’.

Give the economic importance of ‘fisheries’

 Describe the structure of cerebrum. Add a note on its function.

If the number of chromosomes in an endosperm cell is 27, what will be the chromosome number in the definitive nucleus?

1. 9
2. 18
3. 27
4. 36

In which of the following haploid cells a whole genome in human being is present?

1. sperm
2. somatic cell
3. mature RBC
4. primary spermatocyte

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

What is gene pool?

What does abbreviation HGP stand for?

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

With the help of a labelled diagram of lateral view of cerebrum, describe the structure .

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

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

Define the term ‘genome’.

Sketch and label the structure of chromosome.

Give economic importance of apiculture