1. What are the basic differences between the 4 major classes of plants found in

Question

1. What are the basic differences between the 4 major classes of plants found in Olympic National Park? What is the earliest common ancestor for all of these classes?

2. When looking at the classes of animals in the park, what is the difference between an invertebrate and a vertebrate? Which class of animal has the greatest amount of diversity?

3. Do all animals have symmetry? What types of symmetry are there?

4. In any ecosystem, death is an incredibly important part of the health of that ecosystem. What types of organisms are critical for the recycling of nutrients in the ecosystem?

Explanation / Answer

1. The four major classes of plants that are found in Olympic national park include mosses and related plants, ferns and related plants, cone-bearing plants, and flowering plants. Due to the existence of diverese ecosystems, Olympic national park is considered as a reserve of evolution.

Mosses (phyllum: bryophyta) are the non-vascular flowerless plants. Ferns are vascular plants lacking flowers and fruits. Cone bearing plants are vascular plants that produce fruits but not flowers. Floweing plants (angiosperms) are those that can produce flowers, these plants can also produce fruits and seeds. Algal species are the ancestors of all these clases.

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