Which plant type does not undergo photosynthesis?

Parasitic plants are distinct in that they do not undergo photosynthesis. These plants have evolved to derive their nutrients and energy directly from other living plants, often through specialized structures that connect to their host's vascular system. This adaptation enables them to thrive in environments where they might not be able to photosynthesize, either due to a lack of sunlight or the ability to grow in the shade of larger plants.

In contrast, pteridophytes, annual plants, and succulent plants are capable of photosynthesis. Pteridophytes, which include ferns and their relatives, contain chlorophyll and can convert light energy into chemical energy. Annual plants typically complete their life cycle within one growing season and rely on photosynthesis for growth and reproduction. Succulent plants, known for storing water in their leaves or stems, also utilize photosynthesis, often displaying adaptations to minimize water loss while still maintaining the ability to convert light into energy.