BIOLOGY-TEXT
BIOLOGY-TEXT
5th Edition
ISBN: 9781260169621
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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ACTIVITY &8: Fruit and seed anatomy (Student dissection or demonstration) The fate of the parts of the flower can differ among angiosperms. Floral parts typically become part of the seed and/or the fruit. 1. Obtain a germinated bean and use p. 145 of the atlas as a guide. The pod that housed the bean is the fruit of the bean plant. The bean is the seed of the plant. 2. The papery outer red covering of the bean is the seed coat, which developed from the integuments of the ovule. g eno le al boez 3. The white structure on the internal region of the bean is the hilum, the site where the seed was attached to the inner walls of the pod. eliunt ynd Vhutem Js 4. Draw and label the exterior of the bean in the space provided. U CLO22-26Cpou 5. Remove the seed coat to expose the pale underlying structure (cotyledon). Gently pry open the bean. How many cotyledons does a bean have? 6. Once the bean is opened, the embryonic sporophyte is revealed. It consists of a "leaf- like" structure called the…
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?
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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