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

Short Answer Question:

Give its significance of vernalization.

______ is known as pacemaker of heart.

Describe pericardium.

Short answer question.

Describe valves of human heart.

Short answer question.

What is the role of papillary muscles and chordae tendinae in the human heart?

Give scientific reason.

Human heart is called as myogenic and autorhythmic.

Give scientific reason.

Left ventricle is thick than all other chambers of heart.

Which organ acts a temporary endocrine gland in females?

Select the odd one from given herbicides.

What is mycorrhiza?

Match the column A with B and rewrite correct pairs

Explain codominance in colour coat in cattle with checker board method.

Which of the following has thickest wall?

The phase of contraction of heart is termed as ______.

The free edges of cuspid valves are attached to the papillary muscles of the heart by fibres are called ______.

In between which layers of pericardium, pericardial fluid is present?

Draw diagram of conducting system of human heart. Label SA node and bundle of His.

Draw labelled diagram of internal structure of human heart.

Label right atrium, mitral valve, left ventricle and pulmonary semilunar valve.

Write a function of Eustachian and tricuspid valve found in human heart.

What is the function of pericardial fluid?

What is the importance of valves in the heart?