BIOLOGY (LL)
5th Edition
ISBN: 9781264115495
Author: BROOKER
Publisher: MCG
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Chapter 31.5, Problem 2CC
Summary Introduction
To determine: The function of the lacy integument of Runcaria heinzelinii based on the knowledge of the function of integument in modern seed plants.
Introduction: The integuments in modern flowering plants allow the transfer of food material from mature photosynthetic sporophytes to the young embryo. They also help ovules in flower to receive pollen.
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Chapter 31 Solutions
BIOLOGY (LL)
Ch. 31.1 - Prob. 1CCCh. 31.2 - Why did giant dragonflies exist during the...Ch. 31.3 - Prob. 1CCCh. 31.4 - What were the goals of the Browning and Gunning...Ch. 31.4 - Prob. 2EQCh. 31.4 - Prob. 3EQCh. 31.5 - Core Skill: Modeling The goal of this modeling...Ch. 31.5 - Prob. 1CCCh. 31.5 - Core Skill: Connections Look ahead to Figure...Ch. 31.5 - Prob. 2CC
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- Answer the following questions: How many carpels are fused to form an apple? How might the fleshy pericarp aid in seed dispersal? How many carpels are fused to form a tomato?arrow_forwardIn a common eudicot pattern of development for the common bean in the figure, the radicle emerges from the seed (1), then begins to develop into a primary root that grows down into the soil. As this occurs, the hypocotyl emerges from the seed and bends into the shape of a hook (2). The bent hypocotyl lengthens and pulls the cotyledons upward (3). When the hypocotyl reaches the soil surface, exposure to light causes it to straighten (4). Primary leaves emerge from between the cotyledons and begin photosynthesis. The cotyledons typically undergo a period of photosynthesis before shriveling (5). Eventually, the cotyledons fall off the lengthening stem, and the young plant’s new leaves produce all of its food. a) Identify and explain what environmental factors influence the timing and coordination of the germination of seeds.arrow_forwardIn some species, such as magnolia, sepals look like petals, and both are collectively called "tepals:' Suggest an extension to the ABC model that could hypothetically account for the origin of tepals.arrow_forward
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