BIO 1010 Lab 4 Gymnosperms - FA20 PDF

BIO 1010: Lab 4 - Gymnosperms Gymnosperm - Learning Objectives 1. Place representative plants in their appropriate phyla. 2. Recognize and differentiate male and female cones of gymnosperms and of Pinus sp., and relate these to the alternation of generations life cycle. 3. Describe the life cycle of...

BIO 1010: Lab 4 - Gymnosperms Gymnosperm - Learning Objectives 1. Place representative plants in their appropriate phyla. 2. Recognize and differentiate male and female cones of gymnosperms and of Pinus sp., and relate these to the alternation of generations life cycle. 3. Describe the life cycle of Pinus sp., and be familiar with the structures in which spores, gametophytes, gametes, and embryos develop. 4. Describe a seed of Pinus sp. 5. Describe the structural and functional differences between ferns and gymnosperms. Phylum Coniferophyta–Conifers Pines (Pinus) 8 9 https://www.youtube.com/watch?v=2XcCoqf-acs 10 Seed Cone Pollen Cone 12 Pine Staminate (pollen) Cone 14 15 Phylum Coniferophyta – Pinus sp. Pollen w/pollen tube Phylum Coniferophyta: Pinus sp. Ovulate Cone (1 of 5) Phylum Coniferophyta: Pinus sp. Ovulate Cone (2 of 5) 18 Phylum Coniferophyta: Pinus sp. Ovulate Cone (3 of 5) Phylum Coniferophyta: Pinus sp. Ovulate Cone (4 of 5) 20 Phylum Coniferophyta: Pinus sp. Ovulate Cone (5 of 5) 21 Phylum Coniferophyta: Pinus sp. Ovulate Cone → Fertilization → Seed 24 Phylum Cycadophyta Phylum Ginkgophyta (Ginkgo biloba) A C B Ovulate organ Fleshy Covered Seeds D E Male strobili G F Phylum Gnetophyta Gnetum sp. Welwitschia sp Ephedra sp. http://www.agricultureinindia.net/plants/gymnosperms-plants/reproduction-in-gnetumwith-diagram-gymnosperms-botany/12895 29 C Male Cone B Phylum Gnetophyta: Welwitschia sp. A D F Female Cone E