BIO 1130 Study Guide - Final Guide: Mesozoic, Cartilage, Doushantuo Formation

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

Gymnosperms: predatory lifestyles in gnathostomes were possible due to the development of jaws, toxic secretions in amphibians are frequently accompanied by warning coloration, in their reproductive habits, the monotremes are oviparous. Changes in co2 and other greenhouse gases have been suggested as the cause of mass extinctions. Nutrient provisioning of the seed differs between gymnosperms & angiosperms. How does the origin of the nutrients differ between these two groups: gymnosperms: archegonia produces nutrients for an egg that may not be fertilized, angiosperms: Amniotes are divided into 2 groups based on skull morphology. Successful invasion of land required protecting sperm during transfer to the female and the zygote from drying out. Give 1 plant & 1 insect example of how these were solved: plant, why: protect from drying out/dessication, plant: angiosperms/gymnosperm- pollen is a waterproof structure around sperm- seed: protective case with nutrients to supply embryo. Spermatophore protects sperm as passed to female.