BIOLOGY
JAMB 2003 - Question 13
Biology 2003 JAMB Past Questions - Question 13: If water that has been coloured red is poured at the base of a wilting plant, it will appear as a red stain in the cells of the
Choose the most appropriate option for the gap .
A:
B:
C:
D:
Correct Answer
A
Explanation
Xylem is a vessel that conducts water and mineral salts up the leaves Of plants. The root hairs of wilting plant absorb the coloured water by osmosis and by the same process the water moves into the xylem and stains the xylem vessel. Phloem is a vessel or channel through which carbohydrate manufactured in the leaves is translocated to other parts of plant. Parenchyma is composed of thin walled large cells which when filled with water acts as a supporting tissue especially in young herbaceous plants. It also acts as storage organ and packing tissue. Epidermis is the outer covering of the leaves and stems. It offers protection and contains stomata and therefore photosynthetic.
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