Q66 of 79 Page 54

What will happen if platelets were absent in the blood?

The main function of platelets is to prevent bleeding. Platelets helps in the coagulation of blood (clotting of blood) in a cut or wound. No blood coagulation would take place in the absence of platelets. This would be a dangerous situation; in case of an injury.


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64

Match the terms in Column (A) with those in Column (B)























Column A



Column B



(a) Trypsin



(i) Pancreas



(b) Amylase



(ii) Liver



(c) Bile



(iii) Gastric glands



(d) Pepsin



(iv) Saliva


 65

Name the correct substrates for the following enzymes:

(a) Trypsin (b) Amylase (c) Pepsin (d) Lipase

 67

Plants have low energy needs as compared to animals. Explain.

 68

Why and how does water enter continuously into the root xylem?