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Why is double circulation necessary in t...

Why is double circulation necessary in the human body?

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Double circulation
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ZEN PUBLICATION-LIFE PROCESSES-ZEE ADDITIONAL QUESTIONS SECTIONS (SHORT ANSWER [SA] TYPE 2 QUESTIONS)
  1. Explain the ways in which glucose is broken down in absence or shortag...

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  2. List four functions of the human heart.

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  3. Why is double circulation necessary in the human body?

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  4. What is translocation? Why is it essential for plants?

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  5. Where do the substances in plants reach as a result of translocation?

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  6. What are the components of the transport system in human beings ? What...

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  7. Mention the three kinds of cells present in blood. Write one function ...

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  8. Write one function of each of the following components of the transpor...

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  9. Explain how does the exchange of gases occur in plants across the surf...

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  10. How are water and minerals transported in plants ?

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  11. Mention the site of exchange of material between the blood and surroun...

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  12. Draw a schematic representation of transport and exchange of oxygen an...

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  13. Describe the process of digestion of protein in the stomach.

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  14. Describe an experiment to show the effect of concentration on the rate...

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  15. Define the term excretion. Why should animals excrete waste matter?

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  16. Name the main excretory organ of human beings and state the form in wh...

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  17. Name the following: a] The process in plants that links light energy...

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  18. How do the guard cells regulate opening and closing of stomatal pores?

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  19. Why does absorption of digested food occur mainly in the small intesti...

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  20. What is the advantage of having four chambered heart?

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