Practice 2,103 free Class 11 Zoology - 5. Body Fluids and Circulation questions with answers and step-by-step solutions.
The pulse rate and stroke volume of a person whose end systolic volume is 50 ml, end diastolic volume is 100 ml and cardiac output is 6 litre/minute will be respectively:
Consider the following four statements (a–d) and select the option which includes all the correct ones only:
(a) The circulatory patterns are of two types: open and closed
(b) Open circulatory system is present in arthropods and platyhelminthes
(c) Annelids and chordates have a closed circulatory system
(d) Closed circulatory system is considered to be less advantageous than open circulatory system
Options:
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