Why circulatory system is absent in sponges?
In sponges all cells are in direct contact with environment and its all requirements are directly met thus it does not require a circulatory system.
Why do we consider Blood as a connective tissue?
Describe the evolutionary changes in the pattern of heart among vertebrates.
Why do we call our heart myogenic?
Sino-auricular node is called pacemaker of our heart. Why?
Write the differences between
(d) P wave and T wave
Write the differences between
Systole and diastole
Write the differences between
(a) Blood and lymph
Write the differences between
Open and closed circulatory system
What is the differences between lymph and Blood?
How many times does a heart beat per minute?
Mock Test Series
