BIOA02H3 Lecture Notes - Lecture 6: Inbreeding Depression, Cotyledon, Endosperm

• School: UTSC
• Department: Biological Sciences
• Course: BIOA02H3
• Professor: Effiette Sauer

Document Summary

Without any seed adaptation, most seeds don"t fall far from the mother plant. Very negative for its offspring because it causes competition for space and leads to closely related individuals mating , which leads to really bad quality of offspring ( inbreeding depression) They develop ingenious adaptations ( rely on external vector) Wind, water currents, explosive self-dispersal, and services of animals (ants). Some have certain physical features like fur or ferns, hooks or barbs that would allow them to stick to animals. Some are eaten in which they do not get disintegrated in the stomach and then there poop back out into the word. Gravity dispersed who the hope to get secondarily dispersed by animals (nuts and a squirrel) Contains plant embryo , covered with protective seed coat. When broken open contains embryo: embryonic root(radical) and cotyledons. Inside the ovule are a bunch of cells within entrance.