Question

Cacti don't have leaves. So in what part of a cactus does photosynthesis occur: the stem, the needles, or the flowers?

1) The stem
2) The needles
3) The flowers

Answer 1

In cacti, photosynthesis occurs in the stem.

Step-by-step explanation:

Photosynthesis in plants primarily occurs in leaves. However, cacti are an exception because they have adapted to dry environments. In cacti, the stem is responsible for photosynthesis. The stem of a cactus contains specialized tissue called the parenchyma, which performs photosynthesis. The stem is capable of carrying out this process due to its ability to store water and produce chlorophyll.