The organelle in which photosynthesis occurs

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70
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6answers
7k views

Why do plants have green leaves and not red?

I know plants are green due to chlorophyll. Surely it would be more beneficial for plants to be red than green as by being green they reflect green light and do not absorb it even though green light ...
23
votes
4answers
1k views

How many times did endosymbiosis occur?

According to the endosymbiont theory, mitochondria and chloroplasts originated as bacteria which were engulfed by larger cells. How many times is it estimated that this occurred in the past? Are there ...
2
votes
1answer
336 views

Plastid and mitochondria

I am not a biologist, so please bear with me for this basic question. Although I tried googling, I am confused. What is the difference between plastids, chloroplasts and mitochondria? Are there any ...