Biology
Medium
Question
Open circulatory system can contain_________?
A
Red Blood Cells
B
White Blood Cells
✓ Official correct answer
C
Haemoglobin
D
All of these
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
Red Blood Cells
No member explanations yet for this option.
B
White Blood Cells
No member explanations yet for this option.
C
Haemoglobin
No member explanations yet for this option.
D
All of these
No member explanations yet for this option.