BIOL 1030 Lecture Notes - Lecture 28: Gravitropism, Cotyledon, Nephron

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1030
• Professor: Scott Kevin

Document Summary

Lecture 28: growth centers and initiates in the seed for the seed vascular plants, there are three types of angiosperm seeds (primary difference amongst them is the fate of the endosperm), the first superficially resembles a peanut. Most of the endosperm has been used up. The outer coat is the seed coat, and the center of the seed is cotyledon tissue (embryonic leaves they"ve used up the energy of the endosperm and act as the source of storage of nutritive compounds). It also has a sam and ram: the second resembles a caster bean. It has two flattened cotyledons, and most the endosperm is still present (blue on diagram acts as nutritive tissue storage). Also, has a sam and ram: the third is a monocot grain (includes part of the ovary wall corn or wheat). The triploid endosperm is still present and contains starches, lipids, proteins energy for growth. It has one modified cotyledon known as a scutellum.