Basic Botany Chapter Quiz
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Questions and Answers

What is a distinguishing characteristic of monocots in terms of seed leaves?

  • They produce two seed leaves.
  • They produce one seed leaf. (correct)
  • They produce multiple seed leaves.
  • They do not produce seed leaves.
  • How does the life cycle of annual plants differ from other plant classifications?

  • Annuals can live for multiple years.
  • Annuals produce seeds over several growing seasons.
  • Annuals complete their life cycle in one growing season. (correct)
  • Annuals have a dormant period during their life cycle.
  • Which of the following accurately describes a biennial plant?

  • It lives for multiple years without dying.
  • It completes its life cycle in a single year.
  • It is characterized by having a single seed leaf.
  • It requires two growing seasons to complete its life cycle. (correct)
  • What is a characteristic of dicots when compared to monocots?

    <p>Dicots have two seed leaves.</p> Signup and view all the answers

    Which type of plant typically has a more complex vascular system?

    <p>Perennial plants.</p> Signup and view all the answers

    In which category would a zinnia fall based on its life cycle?

    <p>Annual</p> Signup and view all the answers

    What environmental factor can significantly affect plant growth?

    <p>Amount of sunlight.</p> Signup and view all the answers

    Which component is essential for understanding plant growth and development?

    <p>The differences in vascular systems.</p> Signup and view all the answers

    What is the main function of mycorrhizae fungi in relation to plant roots?

    <p>They improve the plant's ability to absorb water and nutrients.</p> Signup and view all the answers

    What is a defining characteristic of a taproot?

    <p>It continues to elongate and has limited secondary branching.</p> Signup and view all the answers

    Which of the following plants is known to have a taproot?

    <p>Hickory trees</p> Signup and view all the answers

    What happens to a plant's root system when its taproot is severed?

    <p>The plant is encouraged to produce a fibrous root system.</p> Signup and view all the answers

    Which option best describes a fibrous root system?

    <p>It is formed from multiple lateral roots branching out.</p> Signup and view all the answers

    Where does the primary root originate from?

    <p>The lower end of the seedling's embryo.</p> Signup and view all the answers

    Which type of roots develops as side or branch roots from another root?

    <p>Lateral roots</p> Signup and view all the answers

    Which plant structure is primarily responsible for nutrient absorption?

    <p>Roots</p> Signup and view all the answers

    What is the primary advantage of cross-fertilization in plants?

    <p>It creates a seed with a broader genetic base.</p> Signup and view all the answers

    Which term describes a fruit that has a hard outer layer encasing the seed?

    <p>Stone fruit</p> Signup and view all the answers

    How does cross-fertilization affect plant populations?

    <p>It allows populations to adapt to various environmental conditions.</p> Signup and view all the answers

    What is an incorrect statement about simple fruits?

    <p>They always contain multiple seeds.</p> Signup and view all the answers

    What benefit does a broader genetic base provide to a plant population?

    <p>It enhances survival under varying conditions.</p> Signup and view all the answers

    Which of the following best describes the function of the hard outer layer of certain fruits?

    <p>It serves as a protective barrier for the seed.</p> Signup and view all the answers

    Which type of fruits predominantly showcase cross-fertilization?

    <p>Aggregate fruits</p> Signup and view all the answers

    In the context of plant reproduction, what does self-pollination promote?

    <p>Similar traits among offspring.</p> Signup and view all the answers

    What is the primary structure that comprises a fruit?

    <p>Fertilized ovules and the ovary wall</p> Signup and view all the answers

    Which of the following fruits has a fleshy ovary wall?

    <p>Peach (drupe)</p> Signup and view all the answers

    What type of fruit is characterized by having multiple seeds with a fleshy overlay?

    <p>Berry</p> Signup and view all the answers

    Which part of a fruit contains the genes from both male and female flowers?

    <p>The seeds</p> Signup and view all the answers

    Which of the following fruit types includes apple and peach?

    <p>Pome</p> Signup and view all the answers

    Which of the following statements about maple fruit is true?

    <p>It has a dry structure</p> Signup and view all the answers

    What distinguishes a berry from other types of fruit?

    <p>It has multiple seeds and fleshy tissue</p> Signup and view all the answers

    What feature is common between an apple and a peach in terms of their fruit classification?

    <p>Both have seeds</p> Signup and view all the answers

    What is the defining characteristic of crenate margins in leaves?

    <p>They have rounded teeth.</p> Signup and view all the answers

    Which type of leaf margin is characterized by a smooth edge?

    <p>Entire</p> Signup and view all the answers

    What distinguishes a serrate leaf margin from other types?

    <p>It has small, sharp teeth pointing towards the apex.</p> Signup and view all the answers

    Which type of leaf margin has teeth ending in an acute angle pointing outward?

    <p>Dentate</p> Signup and view all the answers

    What are the main characteristics of leaves with palmate venation?

    <p>Veins spread out from a central point like fingers.</p> Signup and view all the answers

    What type of margin would a leaf have if the edges are divided into lobes?

    <p>Lobed</p> Signup and view all the answers

    Which leaf margin type typically indicates a smoother edge with minimal features?

    <p>Entire</p> Signup and view all the answers

    In which type of leaf margin do the teeth point towards the apex of the leaf?

    <p>Serrate</p> Signup and view all the answers

    Monocots produce two seed leaves during their life cycle.

    <p>False</p> Signup and view all the answers

    A biennial plant completes its life cycle in two years.

    <p>True</p> Signup and view all the answers

    Annual plants can live for multiple growing seasons.

    <p>False</p> Signup and view all the answers

    Dicots have a more simplistic vascular system compared to monocots.

    <p>False</p> Signup and view all the answers

    The life cycle of a zinnia can be classified as perennial.

    <p>False</p> Signup and view all the answers

    Both annuals and biennials produce seeds during their life cycle.

    <p>True</p> Signup and view all the answers

    The primary action of annual plants involves germination and death within a five-year period.

    <p>False</p> Signup and view all the answers

    Internal plant parts are consistent across all types of plants regardless of their classification.

    <p>False</p> Signup and view all the answers

    The length of time required for seed germination is consistent across all species.

    <p>False</p> Signup and view all the answers

    Monocots produce two cotyledons.

    <p>False</p> Signup and view all the answers

    The hypocotyl grows downward in response to light.

    <p>False</p> Signup and view all the answers

    Older seeds generally have higher viability compared to younger seeds.

    <p>False</p> Signup and view all the answers

    Root hairs and lateral roots develop from the radicle.

    <p>True</p> Signup and view all the answers

    Seeds require dark conditions for germination regardless of their species.

    <p>False</p> Signup and view all the answers

    The seedbed must have a loose, fine-textured soil for optimal seed germination.

    <p>True</p> Signup and view all the answers

    The radicle is the last part of the seedling to emerge.

    <p>False</p> Signup and view all the answers

    A twig is defined as a young stem that is in the dormant stage and has leaves.

    <p>False</p> Signup and view all the answers

    Buds or leaves are not necessary for a structure to be classified as stem tissue.

    <p>False</p> Signup and view all the answers

    Stems can grow belowground in the form of rhizomes, tubers, corms, or bulbs.

    <p>True</p> Signup and view all the answers

    Stolons are short, stubby side stems that arise from the main trunk of a tree.

    <p>False</p> Signup and view all the answers

    Potato tubers serve as aboveground stems that produce leaves and flowers.

    <p>False</p> Signup and view all the answers

    Spurs can revert to nonfruiting stems if severely pruned too close.

    <p>True</p> Signup and view all the answers

    A branch is composed of stem tissue that is one year old or less.

    <p>False</p> Signup and view all the answers

    Nodes are a characteristic feature of roots, allowing for a clear distinction from stems.

    <p>False</p> Signup and view all the answers

    Buds that develop from roots or internodes are known as lateral buds.

    <p>False</p> Signup and view all the answers

    The protective outer layer of flower buds in temperate-zone trees is usually comprised of soft, green leaves.

    <p>False</p> Signup and view all the answers

    Fruit buds have a higher chance of developing into fruits in favorable weather conditions.

    <p>True</p> Signup and view all the answers

    Adventitious buds are capable of developing into new plants from cuttings taken from stems or leaves.

    <p>True</p> Signup and view all the answers

    Annual plants typically have naked buds characterized by leathery protective layers.

    <p>False</p> Signup and view all the answers

    Terminal buds are located at the base of a stem.

    <p>False</p> Signup and view all the answers

    Cabbage and head lettuce are examples of enlarged lateral buds.

    <p>False</p> Signup and view all the answers

    A critical temperature period is necessary for many plant buds to resume growth in spring.

    <p>True</p> Signup and view all the answers

    Seed coat dormancy occurs when a hard seed coat does not allow water to penetrate, affecting germination.

    <p>True</p> Signup and view all the answers

    Embryo dormancy allows seeds to grow without any prior chilling period.

    <p>False</p> Signup and view all the answers

    Scarification can be achieved through natural means such as digestion by animals.

    <p>True</p> Signup and view all the answers

    The endosperm serves as a food supply for the embryo during germination.

    <p>True</p> Signup and view all the answers

    Mechanical scarification can be done by soaking seeds in water for an extended time.

    <p>False</p> Signup and view all the answers

    Orchids are unique among seeds because they contain a substantial amount of endosperm.

    <p>False</p> Signup and view all the answers

    Stratification is used to break seed coat dormancy in ornamental plants.

    <p>False</p> Signup and view all the answers

    The process of germination begins when a seed absorbs oxygen through its seed coat.

    <p>False</p> Signup and view all the answers

    A plant classified as an ______ completes its life cycle in one year.

    <p>annual</p> Signup and view all the answers

    Plants can be classified as annual, ______, or perennial based on their life cycles.

    <p>biennial</p> Signup and view all the answers

    Monocots produce only one seed ______, while dicots produce two.

    <p>leaf</p> Signup and view all the answers

    During its life cycle, an annual plant germinates, grows, matures, blooms, produces seeds, and ______.

    <p>dies</p> Signup and view all the answers

    Dicots are characterized by having a more complex vascular ______ compared to monocots.

    <p>system</p> Signup and view all the answers

    The life cycle of a zinnia is classified as ______.

    <p>annual</p> Signup and view all the answers

    Plants with two seed leaves are classified as ______.

    <p>dicots</p> Signup and view all the answers

    In terms of life cycles, ______ plants live for multiple growing seasons.

    <p>perennial</p> Signup and view all the answers

    Flowers have sexual reproduction as their sole ______.

    <p>function</p> Signup and view all the answers

    The beauty and ______ of flowers evolved to ensure the continuance of the species.

    <p>fragrance</p> Signup and view all the answers

    Pollinators such as insects, birds, and other ______ play an important role in the reproductive process of flowers.

    <p>animals</p> Signup and view all the answers

    Carl von Linné developed a system of plant nomenclature that is based on flowers and/or reproductive ______ of plants.

    <p>parts</p> Signup and view all the answers

    Knowledge of flowers and their parts is essential for anyone interested in plant ______.

    <p>identification</p> Signup and view all the answers

    A flower contains a stamen (male flower part) and/or ______ (female flower part).

    <p>pistil</p> Signup and view all the answers

    The stamen is considered the male ______ organ of the flower.

    <p>reproductive</p> Signup and view all the answers

    Flowers are the plant part least influenced by environmental ______ changes.

    <p>changes</p> Signup and view all the answers

    Many roots have a symbiotic relationship with ______ fungi, which improves the plant’s ability to absorb water and nutrients.

    <p>mycorrhizae</p> Signup and view all the answers

    A primary root that elongates downward and has limited secondary branching is called a ______.

    <p>taproot</p> Signup and view all the answers

    If the primary root ceases to elongate, numerous ______ roots develop, forming a fibrous root system.

    <p>lateral</p> Signup and view all the answers

    Some plants, such as grasses, naturally produce a ______ root system.

    <p>fibrous</p> Signup and view all the answers

    Hickory and pecan trees have a central root feature known as a ______.

    <p>taproot</p> Signup and view all the answers

    Severing a plant’s taproot can encourage it to produce a fibrous root ______.

    <p>system</p> Signup and view all the answers

    The ______ root system is formed when numerous lateral roots develop from the primary root.

    <p>fibrous</p> Signup and view all the answers

    The primary root originates at the lower end of a seedling’s ______.

    <p>embryo</p> Signup and view all the answers

    Cross-fertilization combines genetic material from two parent ______.

    <p>plants</p> Signup and view all the answers

    The resulting seed from cross-fertilization has a broader genetic ______.

    <p>base</p> Signup and view all the answers

    A ______ encases the seed in certain types of fruits.

    <p>hard stone</p> Signup and view all the answers

    Fleshy fruits have a ______ overlay that contains the seeds.

    <p>fleshy</p> Signup and view all the answers

    The broader genetic base from cross-fertilization may enable a ______ to survive under a wider range of environmental conditions.

    <p>population</p> Signup and view all the answers

    Simple fruits can be either hard or ______.

    <p>fleshy</p> Signup and view all the answers

    The seed in a hard fruit is ______ by a protective layer.

    <p>encased</p> Signup and view all the answers

    Genetic material from self-pollination promotes ______ within the plant population.

    <p>uniformity</p> Signup and view all the answers

    The ________ is a part of a seed that provides food for the germinating embryo in beans.

    <p>cotyledon</p> Signup and view all the answers

    The ________ is the root part of a germinating seed that grows downward.

    <p>radicle</p> Signup and view all the answers

    A plant flower with many pistils and ovaries is described as having one corolla, one calyx, and one ________.

    <p>stem</p> Signup and view all the answers

    In some fruits, if ovules are not pollinated successfully, the fruit will be ________.

    <p>misshapen</p> Signup and view all the answers

    Pineapples and figs are examples of ________ fruits that develop from independent flowers on a single structure.

    <p>multiple</p> Signup and view all the answers

    The ________ is the part of the seed that protects it and maintains its integrity.

    <p>seed coat</p> Signup and view all the answers

    The process of ________ allows the seed to begin growing into a new plant.

    <p>germination</p> Signup and view all the answers

    The ________ develops above the cotyledons in the plant, contributing to its stem and leaves.

    <p>plumule</p> Signup and view all the answers

    Study Notes

    Plant Classification

    • Monocots have one seed leaf; examples include grasses.
    • Dicots possess two seed leaves, commonly represented by broadleaf plants.
    • Distinct differences exist in vascular systems, flowers, and leaves between monocots and dicots.

    Plant Life Cycles

    • Three classifications of plants based on life cycles: annuals, biennials, and perennials.
    • Annuals complete their life cycle within one year, going from seed to seed in one growing season.
    • Example of an annual plant: zinnia.

    Plant Growth and Development

    • Internal and external plant parts are essential in understanding plant growth.
    • Roots have a symbiotic relationship with mycorrhizae fungi to enhance nutrient and water absorption.

    Types of Roots

    • Primary roots originate from the seedling’s embryo; they can develop into taproots.
    • Taproots are characterized by downward elongation with limited secondary branching (e.g., carrots, hickory, and pecan trees).
    • Lateral (secondary) roots branch out from the primary root, forming a fibrous root system in many plants.

    Leaf Structures

    • Leaf margin shapes are categorized into several types:
      • Entire: smooth edges without teeth
      • Crenate: rounded teeth along the edges
      • Dentate: sharp teeth pointing outward
      • Serrate: small teeth pointing towards the leaf apex

    Fruit Structure

    • Fruits develop from fertilized ovules (seeds) and the ovary wall, which may be fleshy.
    • Cross-fertilization enhances genetic diversity in offspring, providing resilience to environmental changes.
    • Examples of fruit types include:
      • Pome (e.g., apple)
      • Drupe (e.g., peach)
      • Samara (e.g., maple)

    Importance of Genetic Diversity

    • Cross-fertilization creates seeds with broader genetic bases, aiding survival across diverse environments.

    Seed Germination

    • Some plants, like celery, require light for germination, while others thrive in darkness.
    • Optimal germination temperatures range between 32°F and 50°F, varying by species.
    • The radicle, the first part of a seedling to emerge, develops into the primary root, which grows downward due to gravity.
    • The hypocotyl grows upward toward light, positioning the cotyledons, which enclose the embryo.

    Seed Viability and Age

    • Seed age significantly impacts viability: older seeds typically germinate poorly and yield less vigorous seedlings.
    • Proper preparation of the seedbed is crucial; it should consist of loose, fine-textured soil with adequate water vapor and low CO2 levels.

    Cotyledons and Plant Types

    • Monocots have one cotyledon (e.g., grasses), while dicots feature two (e.g., broadleaf plants), with differences in vascular systems and floral structures.

    Plant Life Cycles

    • Plants are classified based on life cycles: annuals complete their cycle in one year, biennials take two years, and perennials live for multiple years.

    Stem Terminology

    • Stems may vary in distance between leaves: long stems have significant spacing, while short stems have closely spaced buds.
    • Specialized aboveground stems include crowns, spurs, and stolons, serving unique functions in plant growth and propagation.

    Specialized Belowground Stems

    • Belowground stems, such as potato tubers and tulip bulbs, store food for the plant and can be hard to distinguish from roots; stems possess nodes while roots do not.

    Buds and Their Development

    • Buds consist of undeveloped shoots from which leaves or flower parts form; they develop protective layers in temperate-zone species.
    • Dormancy in buds can require specific conditions, such as cold temperatures, before growth resumes.

    Dormancy Types

    • Seed coat dormancy occurs when a hard seed coat prevents water absorption, common in species like redbud and locust.
    • Embryo dormancy, found in certain ornamental plants, necessitates a chilling period for germination.

    Germination Process

    • Germination transitions a seed from dormancy to growth, marked by water absorption through the seed coat, oxygen availability, and suitable temperature.
    • Scarification techniques are used to break seed coats; methods include mechanical nicking or chemical treatments without harming the embryo.

    Plant Classification

    • Plants are classified as monocots (one seed leaf) or dicots (two seed leaves).
    • Distinct differences in vascular systems, flowers, and leaves are crucial for plant growth discussions.

    Plant Life Cycles

    • Plants can be categorized as annuals, biennials, or perennials based on their life cycle.
    • Annuals, such as zinnias, complete their life cycle in one growing season, including germination, growth, blooming, and seed production.

    Root Systems

    • Two major types of roots: primary and lateral.
    • A primary root can develop into a taproot, becoming the main root with limited branching (e.g., carrots, pecan trees).
    • Lateral roots branch from a primary root, forming a fibrous root system when the primary root stops growing.

    Mycorrhizal Relationships

    • Many roots engage in symbiotic relationships with mycorrhizae fungi, enhancing nutrient and water absorption.

    Flower Structure and Function

    • Flowers are the primary reproductive structures, evolved to attract pollinators through color and fragrance.
    • The classification system developed by Carl von Linné emphasizes flowers due to their stability against environmental changes.

    Floral Anatomy

    • Flowers consist of stamen (male parts) and pistil (female parts), along with accessory structures like sepals and petals.
    • Each flower can have multiple pistils and ovaries, allowing for complex reproduction.

    Fruit Types

    • Simple fruits develop from a single ovary, while multiple fruits arise from clusters of independent flowers on one structure (e.g., pineapples, figs).
    • Cross-fertilization broadens genetic diversity, enhancing population survival under varying environmental conditions.

    Seed Composition

    • Seeds consist of components such as cotyledons, radicle, and seed coat, with different structures in dicots (e.g., bean) and monocots (e.g., onion).
    • In dicots, cotyledons provide nourishment for the germinating embryo, while monocots rely on endosperm.

    Germination Processes

    • Germination varies between dicots and monocots, with differences in the emergence of cotyledons and radicle during the initial growth phase.

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