2007-04-22 12:07:47 · 5 answers · asked by whitney b 1 in Science & Mathematics ➔ Biology
because they don't make glucose by photosynthesis. I mean they dont prepare anyrhing like glucose. only plant cell needs chloroplasts and carbondioxide and water in order to make glucose, oxygen for us.
2007-04-23 07:26:33 · answer #1 · answered by ♥♪♫Priya_akki™♫♪♥ 6 · 0⤊ 0⤋
Chloroplasts contain the pigment chlorophyll which is needed for photosynthesis. Plants, not animals, use photosynthesis for energy. Animals are able to consume the energy they need. However, plants use photosynthesis to make their own. This is done within the chloroplasts.
2016-05-21 03:05:27 · answer #2 · answered by ? 3 · 0⤊ 0⤋
We are heterotrophs or consumers. We get our food from other living things: either producers or consumers.
Though I think it would be pretty handy to be an autotroph, that's not the way it is. So we don't use chloroplasts. We eat our food. I suppose that's less limiting, in a way, because we can eat at any hour of the day and get our energy in spite of the climate conditions.
2007-04-22 20:39:33 · answer #3 · answered by ecolink 7 · 0⤊ 0⤋
Chloroplasts function in photosynthesis. Obviously, we do not take part in photosynthesis, so we do not need chloroplasts.
2007-04-22 12:12:52 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Because we don't use chlorophyll as our main food source, and therefore photosynthesis doesn't occur in the animal kingdom. Our digestive system is more complex...even the simple jellyfish has a more complex life than a plant.
2007-04-22 12:13:38 · answer #5 · answered by nightowl_2134 2 · 0⤊ 0⤋