Question
Why blood is red in colour?
✓
Answer
The presence of haemoglobin makes blood appear red. Haemoglobin bind with oxygen and transports it to all the parts of the body and ultimately to all the cells. It will be difficult to provide oxygen efficiently to all the cells of the body without haemoglobin.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What is the special feature present in a human heart which does not allow mixing of blood when oxygen-rich and carbon dioxide-rich blood reach the heart?
Observe the figures given as Figure (A) and (B) and answer the following.
- Which of the figures A or B indicates the process of inhalation and which the process of exhalation?
- In the figure label the arrows and indicate the direction of:
- Movement of air
- Movement of diaphragm
- Movement of ribs
We need a shiny surface for reflection. Explain why.
Which of the two changes frequently, and why?
What are equinoxes and how are they different from solstices? Give examples with months.
Which of the following food groups would be a better option for adolescents and why?
What will happen if there are no platelets in the blood?
Why is clarified water passed through aeration tanks?
What would happen if all the seeds of a plant fall under the parent plant?
Adolescents sometimes experience mood swings. On some days, they feel very energetic and happy, while on other days, they may feel low. What other behavioural changes are associated with this age?