Question

9. The contraction and expansion movement of the walls of the food pipe is called:
(a) translocation
(b) transpiration
(c) peristaltic movement
(d) digestion

10. When a few drops of iodine solution are added to rice water, the solution turns blue- black in colour. This indicates that rice water contains:
(a) fats
(b) complex proteins
(c) starch
(d) simple proteins

Answer 1

Answer:

9. C peristaltic movement

10. C. starch

Explanation:

iodine is used to check starch. when iodine solution  mixes with starch the color changes to blue black

Hope the answer was helpful!

Answer 2

Answer:

9. Peristaltic movement, option C

10. Starch, option C

iodine is usually used to test starch.

Mark brainliest