Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 45.3, Problem 1HYEW
Summary Introduction
To determine:
When can a fruit be called a vegetable.
Introduction:
Fruits are basically the plant structures that possess seeds and are formed from an ovary. Generally, fruits mean fleshy structures containing seeds. These can be eaten in their raw state. The outer layer of the fruits is known as the pericarp. Pericarp contains three layers; epicarp, mesocarp, and endocarp.
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Both gymnosperm and angiosperm bear seed ,then why are they classified seperatedly?
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When gymnosperms arose during the late Carboniferous era, around 300 million years ago, they were the first true seed-bearing plants. The word comes from gymno-, meaning "naked," and -wsperm, which refers to "seeds" not actual sperm. Gymnosperms have "naked seeds," because they do not encase their seeds in fruits as do angiosperms.
1. Gymnosperms were also the first plants to develop pollen. Which of the following statements correctly describes one of the advantages of pollen?
The development of pollen means that gymnosperms no longer require sporophytes for reproduction.
The development of pollen means that gymnosperms are not dependent on water for reproduction.
Pollen is created by the sperm of the plant.
2. In gymnosperms, where are the female gametophytes located?
In the ovulate cones
The gametophyte stage no longer exists in gymnosperms
In the needles or leaves…
Most flowers contain both male and female reproductive structures, in contrast to the cones of gymnosperms, which are either male or female. Explain how bisexual flowers might be an advantageous evolutionaryadaptation to the flowering plants that possess them.
Chapter 45 Solutions
Biology
Ch. 45.1 - Prob. 1CYLCh. 45.1 - diagram the life cycles of ferns and flowering...Ch. 45.2 - Prob. 1CSCCh. 45.2 - Prob. 1TCCh. 45.2 - Prob. 2TCCh. 45.2 - diagram the structure of a complete flower and...Ch. 45.2 - Prob. 2CYLCh. 45.2 - explain the processes of pollination and double...Ch. 45.3 - Prob. 1HYEWCh. 45.3 - explain how the parts of a flower develop into the...
Ch. 45.3 - describe the differences between monocot and dicot...Ch. 45.4 - The warmth of hot flowers attracts pollinators and...Ch. 45.4 - explain why many seeds undergo dormancy before...Ch. 45.4 - Prob. 2CYLCh. 45.5 - Prob. 1TCCh. 45.5 - Prob. 2TCCh. 45.5 - Prob. 1CYLCh. 45.6 - Prob. 1CSCCh. 45.6 - Prob. 1TCCh. 45.6 - Prob. 1CYLCh. 45.6 - describe how fruit structures aid in seed...Ch. 45.6 - Heat-producing flowers are rare, and many are...Ch. 45 - Prob. 1MCCh. 45 - Prob. 2MCCh. 45 - Prob. 3MCCh. 45 - Which of the following is True? a. Moth-pollinated...Ch. 45 - Prob. 5MCCh. 45 - Prob. 1FIBCh. 45 - In a flowering plant, the male gametophyte is the...Ch. 45 - Prob. 3FIBCh. 45 - Prob. 4FIBCh. 45 - Prob. 5FIBCh. 45 - Diagram the general plant life cycle. Which stages...Ch. 45 - Prob. 2RQCh. 45 - Prob. 3RQCh. 45 - Prob. 4RQCh. 45 - Prob. 5RQCh. 45 - Describe the characteristics you would expect to...Ch. 45 - Prob. 7RQCh. 45 - Describe three mechanisms whereby seed dormancy is...Ch. 45 - Prob. 9RQCh. 45 - Describe three types of fruits and the mechanisms...Ch. 45 - Prob. 1ACCh. 45 - Prob. 2AC
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In flowers, the structures that produce male gametophytes are called _______ ;the strcutures that produce female gametophytes are called _______ . a. pollen grains; flowers c. anthers; stigma b. stamen; carpels d. megaspores; microsporesarrow_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_forwardWhy apple is called a false fruit. Which part of plant forms the fruit?arrow_forward
- Which of the following are found in gymnosperms, as well as in angiosperms? a. Fruits b. Seeds c. Cones d. Flowersarrow_forwardWhich of the following statements describes a difference between gymnosperms and angiosperms? a. Gymnosperms are nonvascular plants; angiosperms are vascular plants. b. Gymnosperms are seed-bearing vascular plants; angiosperms are seedless vascular plants. c. The seeds of gymnosperms are contained within a fruit; angiosperm seeds are "naked." d. Gymnosperms are seedless vascular plants; angiosperms are seed-bearing vascular plants. e. The seeds of gymnosperms are "naked"; angiosperm seeds are contained within a fruit.arrow_forwardBerry: Tomato or Grape Examine fresh tomato fruits or other berry, noting the stalk or pedicel and the green sepals at the basal end. Where do you find the remains the style? Does the berry develop from a superior or an inferior ovary? Where were the petals and stamens attached? Is any other floral part united with the ovary in the formation of this fruit? Is the tomato an accessory fruit? Why or why not? Examine a cross-section of a tomato. How many locules (chambers) are visible? How many ovaries formed the fruit?arrow_forward
- Angiosperms ( flower bearing ) plants developed after gymnosperms ( cone bearing ) plants during the Mesozoic era Which of the following is a benefit to plants developing the ability to have flowers over cones ? ANSWER CHOICES ARE IN THE PHOTO. thanks.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_forwardAngiosperms are the most diverse group of plants in existence today. Which of the following plant structures do angiosperms possess that are not found in any earlier lineage of plant? A. Fruits B. Seeds C. Pollenarrow_forward
- Answer the following questions: What is the difference between a fruit and a vegetable? In what ways does human welfare depend on seed plants? How can you distinguish a monocot from a eudicot? How are insects such as bees important for the reproduction of angiosperms?arrow_forwardLilium Ovary Describe the function of each structure (Central column, ovule, funiculus, septum, pericarp, and locule) Compare the lily ovary to the pistillate strobilus of a gymnospermarrow_forwardThe term angiosperm refers to -the presence of endosperm. -the enclosure of the seeds within a fruit. -the presence of pollen. -the narrow sperm of angiosperms. -the branching of vascular veins.arrow_forward
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