Science 10 - Ecology and Population Assessment Name:
1. Examine the food web below, and answer the questions to the right. (4 marks)
(a) Give two examples of primary consumers.
vulture
(b) Which organism is the top consumer?
seagull
water snake
(c) Give 1 example of a predator-prey relationship within this
food web.
minnow
water flea
(d) Give 1 example of interspecific competition illustrated in
this food web.
algae

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.