Gymnosperm

Plants (Gymnosperms and Angiosperms) OBJECTIVES: 1. To describe the features of seed plant life cycle and the concept of the dominant generation. 2. To describe the life histories and related reproductive structures of gymnosperms and angiosperms. 3. To summarize the features that distinguish gymnosperms and angiosperms. 4. To discuss the advantages of seed plants to dominate land and their evolutionary adaptations on land. EXPERIMENT 1: Gymnosperms INTRODUCTION: Gymnosperms (720 species

The word “gymnosperms” is derived from the Greek word “gymnospermos” , which means “naked seeds”. Gymnosperms are classified into four major groups such as Cycadophyta (Cycads), Ginkgophyta (Ginkgo), Gnetophyta (Ephedra), Coniferophyta (Pinus) , which expands into about 1,000 species of gymnosperms. Gymnosperms are vascular plants that produce seeds inside cones. The fact that gymnosperms have so many species , they have a lot of different and interesting characteristics to help better understand

ultimately share the same character state and you are comparing the ones are not shared within the group, which is an outgroup (Lab Manual). On page 115 it shows a table of land plants and we had to figure out the character states for each moss, fern, Gymnosperm, and Angiosperm. The character states for this table were terrestrial, embryo, dominant sporophyte, vascular tissue, seeds, secondary growth, flowers, fruit, gametophyte dependent on sporophyte, pollen, sporophyll, sporophyte dependent on gametophyte

phyla today (Evolution). Their place was taken by the gymnosperms in the beginning of the Permian period (Evolution). The gymnosperms domineered the land vegetation for 200 million years until their populations deteriorated and were replaced by angiosperms, flowering plants, in the middle of the Cretaceous period (Evolution). Angiosperms have been the most diverse and successful plant group for the past 100 million years, while the gymnosperm group of conifers still remains abundant

How the First Seed Plants Froze the Earth With a little bacteria and a little bit of dirt, the first plant on earth was created. This plant was no more than mats of algae that layered on top of itself in water, but it was a first nonetheless. It was not until the end of the Ordovician period, some 480 million years ago, that plants began to grow on land. Bryophytes were the first to grow, which included mosses, hornworts, and liverworts. Lacking any leaves, these plants went through a Gametophyte

two African countries. You would find welwitschia in the Bentiaba river in Angola or you could also head to Kuiseb river which is in Namibia. 3. What does the name Gymnosperm mean? How is this name descriptive of this group of plants? Gymnosperm is a vascular plant that has naked seed that are not protected by anything. Gymnosperm relates to a Greek word that means naked, I think this name describes the nature of the plants as it is naked like its name says. 4.

Introduction Phenology is the study of how the world times its natural events, particularly in relation to plant and animal life as well as climate pattern. The three major nonbiological factors that affect phenology are sunlight, temperature and precipitation. It’s important to have an understanding of phenology because it gives us an insight on the health of the world and its inhibitors. Some advantages of phenology are knowing the best crop planting dates as well as when we should initiate pest

Pine trees have two subgenus, one is the Strobus and the other one is the Pinus. (Earle, Christopher J. "Pinus (pine) Description - The Gymnosperm Database) There are about 114 species of Aspen out there. (Earle, Christopher J. "Pinus (pine) Description - The Gymnosperm Database) The main four types of Pine trees are scotch pine, ponderosa pine, bristlecone pine and black pine. (Lovetoknow Corp. "Pine Trees.") Pine trees are usually taller than 250 feet

(2013) reported that Pir Lisura N. Park, AJK, Pakistan area has 159 species of vascular plants, belonging to 83 different families which includes 48 species of trees, 38 shrubs, 61 herbs, 7 grasses, 1 epiphyte and 4 ferns. Among trees 2 species of gymnosperms which are widely distributed on all mountain slopes and most frequently exploited for timber. Other 46 tree species are angiosperms which occur in selected patches of favourable habitat, mostly associated with human settlements and agricultural

Land plants can be divided into three different groups. One of these groups are nonvascular plants which include liverworts, hornworts, and mosses. The other two which are the focus of this paper are vascular seedless plants and vascular seed plants. The difference between vascular and nonvascular plants is that vascular plants have vascular tissue which enables them to grow up and be bigger than nonvascular plants. The difference between seed and seedless vascular plants is the presence of a seed