What is the symbol of a circle with an x going through it?

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

What is usually (but not always) related to the metabolic processes of living organisms in its organic form?