BIOL 1002 Chapter : Chapter 21 Notes
Document Summary
The diversity of plants: the plant evolutionary tree, certain anatomical features represent milestones in the evolution of plants. Appearance of flowers and fruits: how do plants affect other organisms, plants play a crucial ecological role. Vital contributions to the food, air, soil, and water. Plants capture energy that other organsims use: plants provide food, directly or indirectly, for all the animals, fungi, and non-photosynthetic microbes on land. Plants help maintain the atmosphere: produce oxygen, replenishing oxygen in the atmosphere. Take up and store water from the soil. Slow the rate of water runoff and flooding: plants provide humans with necessities and luxuries. Plants provide shelter, fuel, and medicine: wood and coal, aspirin, the malaria drug quinine, and pain-killers such as morphine and codeine, humans have domesticated a host of useful plant species. Aesthetic uses in landscaping, gardens, etc: the evolutionary origin of plants plants, several lines of evidence support the hypothesis that green algae gave rise to.
