Biology
Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 36.1, Problem 1CS
Summary Introduction

To sketch: A model that shows the two major lineages of angiosperms and to explain why nearly three-quarters of flowering species are eudicots.

Introduction: During the evolution of angiosperms, two complete genome duplication events were seen. Eudicots are a subset of angiosperms that bear seeds and produce flowers. Eudicots are found in a variety of habitats.

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Postlab: Bryophytes, Seedless Vascular Plants & Gymnosperms 1. What is the conspicuous form of the bryophytes? Is this form haploid or diploid? 2. The part that produces the male gametes is called the....? 3. The part that produces the female gametes is called the... 4. Spores are produced by which cell division process? 5. What is the conspicuous form of the seedless vascular plants? Is it haploid or diploid? 6. What are microspores? Where are they produced in gymnosperms? 7. Megaspores give rise to which structure in gymnosperms? 8. How are most gymnosperms pollinate d? 9. In gymnosperms, the material that nourishes the embryo derives from what tissue? 10. How can you visually differentiate a male from a female cone in pines?
Exercise 2: Construct an indented dichotomous key on the following groups of plants: Bryophyta Lower Vasuclar plants Higher Vascular plants Gymnosperms Angiosperms Pteridophyta Equisetophyta
ACTIVITY 9: In angiosperms, fruits play an important role in seed dispersal. Plant biologists recognize different types of fruit, 11 of which are described in the table below. Dried fruits can be further classified as indehiscent (the fruit/pod does not split open when ripe) or dehiscent (fruits/pods split open when mature). 51 Examine the provided examples of fruits. Fruit Type Description Example Category Simple fruits Ovary wall and seed coat are fused, one seed; seed is attached at only one point to the ovary wall Sunflower seeds Achene Ovary wall is thin and fully fused to the seed at all points; one seed. Wheat orti eno Grain m Walnut Ovary wall hard or woody but can be separated from seed, one seed; may have an outer husk Dry fruits Nut at maturity Ovary has several cavities in cross-section, several Cotton fruit ng yinea Capsule Gc to many seeds g co Bean pod Ovary has one cavity that opens along both sides, many seeds Legume Milkweed Folliclemulq Ovary has one cavity that…
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