Biology Notes 2-11-08

Biology Notes 2-11-08 - spores become gametophytes by...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Biology Notes February 11, 2008 Evolution of Seeds: Homospory is primitive (mosses and ferns). Heterospory evolved from homospory. Zygote = 2n mitosis = sporophyte Sporophyte makes sporangia, sporangia makes spores by mitosis (ploidy changes!),
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: spores become gametophytes by mitosis (haploid) female gametophytes develop inside sporangium. After the male fertilizes, it produces a new sporophyte. This grows into an embryo, inside the seed....
View Full Document

This note was uploaded on 05/02/2008 for the course BIOL 102 taught by Professor Hill/smith during the Spring '08 term at Idaho State University.

Ask a homework question - tutors are online