Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 31.5, Problem 1CC
Summary Introduction
To determine: The hypothesis which explains why the mature
Introduction: The seeds can also refer as mature ovule which contains the embryo and tissues which provide nutrition to the embryo. These tissues are known as endosperm. They are covered with integuments which results in the development of seed coat.
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What is the main difference between angiosperms and gymnosperms in terms of where the seeds are produced? Where would you look to confirm this with your own observations?
Which statement below is correct regarding the formation of the endosperm in angiosperms?
O the endosperm is formed from the female gametophyte and is haploid
O a single sperm nucleus fertilizes the egg nucleus to become the diploid zygote
O a sperm nucleus forms both the zygote and the endosperm through double fertilization
O a second sperm nucleus fuses with the two polar nuclei of the egg sac
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the evolutionary "advances" represented by the seed?
Chapter 31 Solutions
Biology
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
Ch. 31 - The simplest and most ancient phylum of modern...Ch. 31 - Prob. 2TYCh. 31 - A seedless plant phylum that is included in the...Ch. 31 - Prob. 4TYCh. 31 - The seed plants are also known as a. bryophytes....Ch. 31 - Prob. 6TYCh. 31 - Prob. 7TYCh. 31 - Prob. 8TYCh. 31 - Prob. 9TYCh. 31 - Prob. 10TYCh. 31 - List several common traits that lead evolutionary...Ch. 31 - Prob. 2CQCh. 31 - Prob. 3CQCh. 31 - Prob. 1COQCh. 31 - Prob. 2COQ
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- Both gymnosperm and angiosperm bear seed ,then why are they classified seperatedly?arrow_forwardusing the illustrations above arrange the following statements to explain the process of pollen formation in angiosperms "using the illustrations above, arrange the following statements to explain the process of pollen formation in angiosperms"arrow_forwardAnswer the following question: How can you distinguish a monocot from a eudicot? How are insects such as bees important for the reproduction of angiosperms? What advantages do flowers give angiosperms over gymnosperms?arrow_forward
- Explain the process of secondary growth in the stems of woody angiospermswith the help of schematic diagrams. What is its significance?arrow_forwardIn a typical angiosperm, what is the sequence of structures encountered by the tip of a growing pollen tube on its way to the egg? ovary → style → stigma stigma → style → ovary ovary→ stigma→ style stigma→ ovary → stylearrow_forwardMost of the approximately 900 species of gymnosperms are conebearing plants. On the surfaces of their cone scales are ovules, which later become seeds. These ovules are said to be naked because they are not completely enclosed by diploid tissue (as the ovules of angiosperms are). This characteristic gives the gymnosperms their name; gymnos is a Greek word meaning naked, and sperma means seed. Botanists now divide the gymnosperms into four groups: conifers, cycads, ginkgos, and gnetophytes.arrow_forward
- Give one significant difference between gymnosperms and angiosperms.arrow_forwardWhat is the evolutionary importance of the fruits for the angiosperms?arrow_forwardHow did the evolution of the flower promote the explosive diversification of the Angiosperms in the Cretaceous? Short answer:arrow_forward
- in mungbean, there are the cotyledons. What do you think happened to the endosperm?arrow_forwarda. How are the angiosperms classified according to the Angiosperm Phylogeny Group (APG)? b. What is the present understanding about the origin of flowering plants, and the classification of angiosperms into “monocots” and “dicots”, based on most recent evidences? c. The work of plant taxonomists of the 20th century who identified /established the different families of flowering plants based mainly on morphological and anatomical details is still valued and being used today, despite the general acceptance of the Angiosperm Phylogeny Group (APG) as a classification system for the flowering plants. Explain why.arrow_forwardDifferentiate the reproductive structures and processes of the four plant representatives according to the categories provided. Bryophye Pteridophyte Gymnosperm Angiosperm TWO distinguishing characteristics of fertilization TWO distinguishing characteristics of embryogenesisarrow_forward
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