HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions

Rearrange the names of tanks used in sewage treatment as per the flow of the procedure.

1. Settling tank
2. Grit Chamber
3. Aeration tanks 
4. Primary sedimentation tank.

Describe the structure of sex chromosomes with the help of labelled diagram.

Explain the structure of chromosomes with labelled diagram.

Draw diagrammatic representation of cardiac cycle. Explain ventricular systole.

Briefly describe the following:

Angina Pectoris

Abscission means ______.

What is Cardiac output?

Complete the following box with reference to symptoms of mineral deficiency:

Differentiate between X-chromosome and Y-chromosome with reference to –

1. length of non-homologous regions
2. type as per the position of the centromere

Enlist role and deficiency symptoms of Zinc.

Enlist role and deficiency symptoms of Calcium.

Give the name of the deficiency caused due to sulphur in stem and root.

Give reason: Some deficiency symptoms of mineral are visible in young leaves while some appear in older leaves.

Give reason:

The wall of left ventricle is thicker than right ventricle

Give observed symptom when the following mineral are deficient.

Deficiency of Cu

Give observed symptom when the following mineral are deficient.

Deficiency of Bo

Give observed symptom when the following mineral are deficient.

Deficiency of Zn

Give observed symptom when the following mineral are deficient.

Deficiency of K

A root hair is derived from ______ cell.

What are the time durations for each of the following events in cardiac cycle?

1. Atrial systole
2. Atrial diastole
3. Ventricular systole
4. Ventricular diastole