HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions

Why can you feel a pulse when you keep a finger on the wrist or neck but not when you keep them on a vein?

Long answer question:

Which blood vessel of the heart will have the maximum content of oxygen and why?

Long answer question:

How blood is kept moving in the large veins of the legs?

Long answer question:

Describe the histological structure of the artery, vein, and capillary.

Which organ acts a temporary endocrine gland in females?

Give names of two organisations which provide most commonly used models of biogas plants.

Mention any four benefits of biogas.

Write chemical reactions to represent Methanogenesis.

Describe the structure of a biogas plant.

Which type of blood flows through pulmonary veins?

Identify the pulse point ‘A’ from below given diagram.

How a portal vein differs from normal vein?

With the help of neat and labelled diagrams artery and vein.

What is the composition of biogas?

Differentiate between an artery and a vein with reference to lumen and thickness of wall.

Complete the given table:

Name the enzyme that catalyses the synthesis of the primary transcript.

List the changes that the primary transcript undergoes to become functional mRNA.

Give reason Arterial walls are thicker than those of veins.

With the help of a neat and labelled diagram explain VAM (vesicular arbuscular mycorrhizae).