Caroline set up a fourth test tube that contained a leaf and was exposed to dim light.

After two hours the colour of the indicator solution in this test tube remained orange.

Explain why.
(hydrogen carbonate indicator test)

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.

Ithink its c hope it : )