BIO153H5 Chapter 29: Chapter 29
Document Summary
Chapter 29: plant diversity i: how plants colonized land. Concept 29. 1: land plants evolved from green algae. Green algae called charophytes are the closest relatives of land plants. Many important traits of land plants also appear in a variety of protists, including multicellularity, similar photosynthetic pigments, and cell walls composed of cellulose. Some of these traits were acquired independently and tell incomplete story of land plant ancestry. The charophytes on the other hand are the only algae that share the following four distinctive traits with land pla(cid:374)ts (cid:894)stro(cid:374)gl(cid:455) suggesti(cid:374)g that the(cid:455)"re the (cid:272)losest relati(cid:448)es of la(cid:374)d pla(cid:374)ts(cid:895) Peroxisome enzymes the peroxisomes of land plants and charophytes contain enzymes that help minimise the loss of organic products resulting from photorespiration. Structure of flagellated sperm in species of land plants that have flagellated sperm, the structure of the sperm closely resembles that of charophytes sperm.
