Answer #10 Photosynthesis What gas, produced as a by-product of photosynthesis,

Question

Answer #10

Photosynthesis What gas, produced as a by-product of photosynthesis, is essential to nearly all living organisms? What term is given in substances that reradiate light of wavelengts different from those absorbed? In what form is the primary product of photosynthesis stored in a plant? Starch Why will applying iodine reagent directly to a healthy leaf probably not reveal the presence of know some cells contain it? What types of substances need to be removed from a leaf so that it can be tested for the presence chlorophyll Why should alcohol be brought to a boil only in a hot-water bath? What serves as evidence that the chlrophyll has been removed from a Coelus leaf? What do we call the technique by which pigments are separated on a strip of paper? During the paper chromatography, which of the pigments that separate out on the paper are Caroteres What color is phenol red in an acid solution? Pale yellow How does the Elodea sprig bring about a color change in the phenol red solution?

Explanation / Answer

1. Oxygen

2.accessory pigemnts.

3. starch is correct

4.the photosynthetic leaves will transport their ssugar molecules synthesized (glucose molecules) through phloem to the roots, and other parts for storage. Thus, the leaves do not show the positive test for starch presence as in the leaves glucose is being made.

5. i can not see the complete question sorry

6. alcohol is flammable. thus if boiled directly, it may spurt and catch fire.

7. chlorophyll is green pigments substance. However, coleus has presence of reddish pink coloring. This shows presence of anthocyanin in higher concentration than chlorophyll.

8. chromatography

9. im sorry i can not see the complete question again

10. light/ pale yellow

11. elodea sprig water plant (aquatic)has ability to produce oxygen when exposed to light. Under normal conditions, the water is acidic due to presence of CO2 gas. Thus, if you add phenol red it will be yellow in color.

However, after sometime, the indicator will turn pink due to evolution of oxygen. (turning the water basic)

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