BIOL 1200 Study Guide - Midterm Guide: Unique Key, Zygote, Sporophyte
Document Summary
Indicates that plants were on land at least 470 (500) million years ago. The protection of the embryo is important (female gametophyte protects and give nutrients to embryo as it develops into sporophyte) -> this distinguishing feature gave the group the alter(cid:374)ate (cid:374)a(cid:373)e of (cid:862)e(cid:373)(cid:271)r(cid:455)oph(cid:455)tes(cid:863) One of the adaptations of terrestrial land plants to colonize environments with high humidity (compared to green algae who live in aquatic habitats) Plant adaptions to life on land (challenges/advantages): challenges. Plants developed strategies to deter predation (spines, thorns, toxic chemicals) Why are plants important for essential ecosystem services: they improve the atmosphere, surface water, and soil in ways that benefit other organisms, oxygen production, build and hold soil and water, primary producers. Synapomorphy a shared derived trait: chlorophyll a and chlorophyll b, beata carotene (accessory photosynthetic pigment, thylakoids (double-membraned chloroplasts bound sacs, cell wall composition (cellulose, pectin, starch as a storage product (inside chloroplast)
