The job of the chloroplasts is to carry on photosynthesis in the plant. The cuticle is the waxy, waterproofing layer, usually found on top of the upper epidermis in leaves. It helps to protect against water loss and mechanical injury to the plant. Xylem is vascular tissue which carries water and minerals UP the plant stem. Examples of indicators could include bromthymol blue used to test for carbon dioxide as it turns from blue to yellow in the presence of carbon dioxide.
Litmus paper turns red in acids and blue in bases.
Lugol's solution turns blue-black in the presence of starches. Benedict's solution turns from blue to brick red when heated in the presence of simple sugars. Other student examples may be acceptable. A student should wear goggles when heating a liquid or dissecting. Other student answers may be acceptable 3.