Diversity and Reproduction

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apelletier33
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Diversity and Reproduction
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2011-11-15 22:36:18
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Diversity Reproduction
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Botany Unit #4 Notes
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  1. What are the 5 kingdoms?
    • 1. Plantae
    • 2. Animalia
    • 3. Fungi
    • 4. Manera (Eubacteria or Archaebacteria)
    • 5. Protista
  2. What characteristics of plants separate them from fungi and animals?
    Plants are autotrophs that can perform photosynthesis , fugi are heterotrophs and cannot. Animals are heterotrophs and lack cell walls, plants have cell walls and are autotrophs.
  3. What characteristics of plnats separate them from algae (Kingdom Protista)?
    Plants are primarily terrestial, exclusively multicellular, and have meristems. Algae are predominantly aquatic, lack meristems, and are primarily universal and do not have an alteration of generations.
  4. What are the different levels of the classification hierarchy?
    • Kingdom
    • Phylem
    • Class
    • Order
    • Family
    • Genus
    • Species
  5. What are the different levels of the plant classification hierarchy?
    • Kingdom
    • Division
    • Class
    • Order
    • Family
    • Genus
    • Species
  6. How is the classification hierarchy different for plants?
    Division rather then phylem.
  7. How do you write a scientific name? What parts of the classification hierarchy is it composed of?
    Genus species
  8. What are the major groupings of Kingdom Plantae?
    • 1. Non vascular & seedless (uses spores to reproduce)
    • 2. Vascular & seedless (spore producing)
    • 3. Vascular with naked seeds (gymnosperms, no flowers or fruit but still produce seeds)
    • 4. Vascular with covered seeds
  9. What are the divisions of non vascular & seedless Kingdom Plantae?
    • 1. Hepatophyta
    • 2. Anthocerophyta
    • 3. Bryophyta
    • 4. Lycophyta
    • 5. Pteridophyta
  10. What is the common name for hepatophyta?
    Liverworts
  11. Description of Hepatophyta.
    • Very, very short (leafy)
    • Moist environment
    • Gametophyte phase dominates
  12. What is the common name for Anthocerophyta?
    Hornworts
  13. Description of Anthocerophyta.
    • Short & stubby (look like horns)
    • Moist environments
    • Gemetophyte phase dominates
  14. What is the common name of Bryophyta?
    Moss
  15. Description of Bryophyta.
    • Most common
    • Short
    • Moist environment
    • Gemtophyte phase dominates
  16. What is the common name of Lycophyta?
    Club mosses.
  17. Description of Lycophyta.
    • Earliest true roots and leaves found on fossilized ancestors.
    • Diploid sporophyte phase is dominated.
  18. What is the common name for Pteridophyta?
    Ferns.
  19. Description of Pteridophyta.
    • Diploid sporophyte phase is dominanat.
    • Most common & variety.
    • Biggest.
  20. What are the divisions of vasclar with naked seeds Kingdom Plantae?
    • 1. Pinophyta
    • 2. Cycadophyta
    • 3. Gnetophyta
    • 4. Ginkgophyta
  21. What is the common name for Pinophyta?
    Conifers.
  22. Description of Pinophyta.
    • Largest plants on planet.
    • Needles as leaves.
    • Dominant tree at high alititude & upper latitude.
  23. What is the common name of Cycadophyta?
    Cycads.
  24. Description of Cycadophyta.
    • Stumpy.
    • Short.
    • Needles as leaves.
    • Male & female separate individuals.
  25. What is the common name of Gnetophyta?
    N/A.
  26. Description of Gnetophyta.
    • Everything that doesn't fit anywhere else.
    • Short leaves.
    • Awkward shrubs.
    • Vines.
  27. What is the common name of ginkgophyta?
    Ginkgo biloba.
  28. Description of Ginkgophyta.
    • Fanned, dichotomas leaves.
    • Native to China.
    • Turns bright yellow in fall.
    • Separate sexes.
    • Males=have no seeds, papier & clustered.
    • Female=large & round.
  29. What is the common name for Anthophyta?
    Flowering plants (Angiosperms).
  30. Description of Anthophyta.
    • Most advance/complex.
    • Plants have fruits.
    • Seeds contain endosperm (food->proteins & carbs).
  31. Where are gymnosperms located?
    Northern hemisphere. They are the dominant trees of this area.
  32. What is the diversity of gymnosperms?
    About 600 species exist.
  33. What are the leaves of gymnosperms like?
    Needle-like (in clusters or bundles called fasicles of 2-5 leaflets each).
  34. Describe the harsh environment that pine trees must survive:
    Bitter cold, very windy, traditionally dry environment, very low nutrients in the soil.
  35. What is the leaf structure of pine trees?
    • 1. Hypodermis below the epidermis.
    • 2. Thick cuticle.
    • 3. Sunken stomata
    • 4. No air spaces in mesophyll.
    • 5. Endodermis around vascular bundle.
    • 6. Resin canals.
  36. What is the adaptive advantage of the hypodermis being below the epidermis?
    Save water through suberin, provides insulation through slightly thicker cells.
  37. What is the adaptive advantage of a thick cuticle?
    Much better at conserving water.
  38. What is the adaptive advantage of sunken stomata?
    Protects it from the wind, which conserves water.
  39. What is the adaptive advantage of no air spaces in mesophyll?
    Water found in cells not spaces.
  40. What is the adaptive advantage of endodermis around the vascular bundle?
    Controls water movement & loss from vascular bundle to mesophyll.
  41. What is the adaptive advantage of resin canals?
    Repels insects & conserves water (protects it from being wounded).
  42. Why is gymnosperm wood "softer" than the wood of deciduous broadleaf trees?
    Xylem is made of mostly tracheids rather then vessels.
  43. How is extremely thick bark an adaptive advantage for gymnosperms?
    More insulation from cold temperatures, and protection from forest fires.
  44. The roots of gymnosperms are associated with a fungus. This relationship is called...?
    Mycorrhizae.
  45. Why do roots often have difficulty obtaining water?
    Because of frozen topsoil.
  46. Roots of adjacent pines often interweave together. WHY is this an advantage?
    Harder for them to be knocked down, better anchorage.
  47. What are the two types of gymnosperm reproduction?
    • 1. Pollen cones
    • 2. Seed cones
  48. What are pollen cones called?
    Male strobuli.
  49. What do pollen cones consist of?
    Papery or membranous scales arranged in a spiral or whorls around an axis.
  50. When are pollen cones usually produced?
    During the spring.
  51. Where do pollen cones usually develop?
    Toward the tips of the branches in clusters of up to 50 or more.
  52. Where are are pollen cones found in the tree?
    The bottom, to prevent self-pollination.
  53. What are seed cones called?
    Female strobuli.
  54. How long do seed cones live?
    Much larger than pollen cones, these live for three years.
  55. Describe year one, year two, and year three of seed cones.
    • Year one: Immature
    • Year two: Woody scales open and receive pollen
    • Year three: Scales open and release fully developed seeds
  56. Where are seed cones found in the tree?
    The top.
  57. Anthos = ?
    Flowering
  58. Phyta = ?
    Plants
  59. What is the diversity of angiosperms?
    Largest and most diverse division with more than 235,000 known species.
  60. What is the physical size of angiosperms?
    Tiny duckweeds (1mm) to large eucalyptus (rival redwoods in total mass).
  61. What are the growth forms of angiosperms?
    Woody trees, short shrubs, vines, and green herbs. (Every possible growth form).
  62. What is the location of angiosperms?
    Nearly everywhere (no artic varieties). This includes aquatic areas and deserts.
  63. What is the angiosperm's mode of nutrition?
    • 1. Most of them are autotrophic...of course.
    • 2. Some are parasitic.
    • 3. Some are saprotroph.
  64. Use haustoria to take food and water from host xylem and phloem.
    Dodders
  65. Parasitize host plants and produce chlorophyll.
    Mistletoe
  66. Their nutrition comes from the absorption in solution of dead organic matter (dark enbironments).
    Saprotroph
  67. In the reproductive process it takes two sperm to produce a seed.
    Double Fertilization
  68. What does sperm #1 produce in double fertilization?
    The zygote.
  69. What does sperm #2 produce in double fertilization?
    The endosperm.
  70. Food and protein for the seed.
    Endosperm
  71. What does angiosperm mean?
    A plant that has flowers and produces seeds enclosed within a carpel.
  72. A fertile, modified leaf (one of four flower parts). Makes up the "vessel". They evolved from leaves that rolled towards the center to enclose the ovules.
    Carpel
  73. What are pistils composed of?
    2 or more united carpels.
  74. What does a seed develop from?
    A fertilized ovule.
  75. Where are ovules found?
    Within ovaries.
  76. What do ovaries with fertilized ovules develop into?
    Fruit that contain seeds.
  77. What are the two large classes of the classification of Division Anthophyta?
    • a. Magnoliopsida (Dicot)
    • b. Liliopsida (Monocot)
  78. Seed description of dicots.
    2 cotyledons
  79. Seed description of monocots.
    1 cotyledon
  80. Flower parts of dicots.
    Mult. of 4 & 5.
  81. Flower parts of monocots.
    Mult. of 3
  82. Leaf Vein Pattern of Dicots.
    • Netted
    • -Pinnate
    • -Palmate
  83. Leaf vein pattern of monocots.
    Parallel.
  84. Root cross section of dicots.
    Xylem in the shape of an x in the vascular cylinder.
  85. Root cross section of monocots.
    Pith surrounded by xylem and phloem in vascular cylinder.
  86. Stem cross section of dicots.
    Ring pattern (candy corn).
  87. Stem cross section of monocots.
    Scattered faces.
  88. Pollen grain of dicots.
    Apatures
  89. Pollen grains of monocots.
    One opening.
  90. What are the sterile parts of flowers?
    • 1. Penduncle
    • 2. Sepals
    • 3. Petals
  91. The stalk of the flower. The swollen tip of the this is where the flower attaches is the receptacle.
    Peduncle
  92. Collectively known as the caylx. Also protects the bud.
    Sepals.
  93. Collectively known as the corolla. Also known as the attractants.
    Petals.
  94. What are the fertile parts of the plant?
    • 1. Stamens
    • 2. Pistil
  95. What is the male part of the plant?
    Stamens
  96. Makes the pollen and sperm.
    Anther
  97. Holds up the anther.
    Filament
  98. What is the female part of the plant?
    Pistil (Fused Carpels, that can be subdivided into three parts).
  99. Sticky, catches pollen.
    Stigma
  100. Holds up the stigma.
    Style
  101. Contains ovules.
    Ovary
  102. Has sepals, petals, stamen, and pistil/carpels.
    Complete
  103. Missing one or more of the four flower parts.
    Incomplete
  104. Has stamen and pistil/carpels, and are therefore bisexual.
    Perfect
  105. Has stamen OR pistil, Not Both (ex. Pumpkin, Cucumber) These are therefore unisexual.
    Imperfect
  106. Imperfect flower that lacks carpels/pistil (has stamin, male).
    Staminate
  107. Imperfect flower that lacks stamens (has carpels, female).
    Carpellate
  108. Staminate and carpellate flowers on the same plant (1 plant can reproduce by itself).
    Monoecious
  109. Staminate and carpellate flowers are found on separate plants.
    Dioecious
  110. What kind of pollination must take place in dioecious species?
    Cross-pollination.
  111. Every COMPLETE flower has to be...
    PERFECT.
  112. PERFECT flowers DO NOT have to be...
    COMPLETE.
  113. What are the positions of Ovary?
    • 1. Superior
    • 2. Inferior
  114. Calyx and corolla attached to receptacle at base of ovary (ovary above receptacle).
    Superior
  115. Calyx and corolla attached to top of recptacle which surrounds the ovary (ovary below receptacle).
    Inferior
  116. Cluster of flowers all attached to the same primary peduncle).
    Inflorescences
  117. Inflorescences
    • 1. Each flower is attached to a pedicel which is then attached to a main peduncle.
    • 2. The shape of the inflorescence depends on the arrangement of pedicels on the peduncle. For example a spike is one tall peduncle with many short pedicels attached to it.
  118. In most animals, the only haploid cells (cells with one set of chromosomes or "n") are what?
    The gametes (egg and sperm) and the cells that become them.
  119. In plants however, there is an alternation between a diploid (2n) sporophyte phas and a haploid (n) gametophyte phase. What is this referred to as?
    The alternation of generations.
  120. What are the pollination vectors?
    • 1. Wind
    • 2. Water
    • 3. Animals
  121. What type of animals are pollination vectors?
    • 1. Bumblebees
    • 2. Butterflies
    • 3. Birds
    • 4. Lizards
    • 5. Humans
  122. Which of the three methods of pollination vectors are the most efficient, and why?
    Animals, they are MUCH more specific. Animals go directly to the flower while wind/water are totally up to chance.
  123. What are the adaptive strategies for plant pollination?
    • 1. Rewards
    • 2. Attractants
    • 3. Specific Structural Adaptations
  124. What are rewards for plant pollination?
    • a) Nectar
    • b) Pollen
  125. What are nectaries?
    Nectar secreting glands.
  126. What are the components of nectar (what are insects gaining)?
    Sugar & amino acids.
  127. What are the components of pollen?
    Protein (16-60%), lipids (3-10%).
  128. What are example plants of pollen?
    Poppies, peonies, kiwi fruit.
  129. What are attractants?
    • a) Odor
    • b) Color
  130. What are the different odors?
    • 1) Flowery scents
    • 2) Pheromones
    • 3) Dung/Rotten Meat
  131. Uh...smells like a flower (rose, citrus, vanilla).
    Flowery scents
  132. Sex attractant, that tricks insects into thinking flower.
    Pheromones
  133. Tricks insects into thinking the flower is food.
    Dung/Rotten Meat
  134. What do various colors appeal to?
    Different pollinators.
  135. Who do some color patterns appear different?
    To insects who can see ultraviolet patterns.
  136. What are colored spots or lines that draw attention to nectar/pollen?
    Honey Guides
  137. What are the specific structural adaptations?
    • a) landing platforms
    • b) upside down flowers
    • c) long nectar tubes
    • d) force mechanisms
    • e) traps
    • f) mimicry (mates)
  138. Embryo formation without fertilization taking place (has seeds). Involving only the female reproductive structures, the megasporocyte undergoes mitosis rather than meiosis, and it produces a diploid egg cell (becomes a zygote) and two polar nuclei (becomes diploid endosperm). These structures will become a seed (without fertilization or male structures at all!)
    Apomixis
  139. What is the adaptive advantage of apomixis of seed development?
    They can produce a seed even if they aren't pollinated. Great in polar regions where pollinators are absent.
  140. What is a tomato considered botanically?
    A fruit, however in 1893 it was legally ruled a vegetable based on popular viewpoint by the public that it is NOT A DESSERT.
  141. A ripened ovary that may include accessary parts.
    Fruit
  142. What do accessory fruits have?
    Additional floral parts associated. For example, an apple has a core (which is the ovary) and it is surrounded by the flower's receptacle that is now fleshy.
  143. Consisting of 3 distinct regions, it is the wall of the fruit.
    Pericarp
  144. What are the fruit regions of the fruit?
    • 1. Pericarp
    • a. Exocorp
    • b. Mesocarp
    • c. Endocarp
  145. Skin of fruit.
    Exocorp
  146. Tissue between exocarp and endocarp.
    Mesocarp
  147. Inner boundary surrounding the seeds-may be hard like a peach pit, may be papery like in apples, or may not be distinguishable from the mesocarp.
    Endocarp
  148. What are the two major groups of fruits?
    Fleshy or dry
  149. What are the simple fleshy fruits?
    • 1) Drupe
    • 2) Berry
    • 3) Pome
  150. Where do simple fruits develop from?
    A flower with a single carpel/pistil, or fused carpels.
  151. A single seed enclosed by a hard, stony endocarp or pit; usually develops from flowers with a superior ovary containing a single ovule.
    Drupe
  152. What are examples of drupe?
    Peaches, cherries, walnuts, pecans, coconuts, olives, almonds, mango.
  153. Usually develop from a compound ovary and commonly contain more than one seed; the mesocarp is difficult to distinguish from the endocarp as both are fleshy.
    Berry
  154. What are the different types of berries?
    • 1. True berries
    • 2. Hesperidium
    • 3. Pepo
  155. Thin skin, soft pericarp at maturity, most have more than seed.
    True berries
  156. What are examples of true berries?
    Peppers, tomatoes, grapes, pomegranate, avocado, banana, papaya.
  157. These are modified berries with tough, leathery coverings/rinds that contain oil glands. Its fleshy/juicy interior is composed of separate sections, called carpels, filled with fluid-filled vesicles that are actually specialized hair cells.
    Hesperidium
  158. What are examples of hesperidium?
    Citrus fruits (oranges, lemons, limes, and grapefruits).
  159. These are similar to true berries but they develop from flowers bearing inferior ovaries (true berries form from superior ovaries). These fruits traditionally have a tough rind (exocarp) such as pumpkins, squash, watermelon, and cucumbers.
    Pepo (a type of false berry)
  160. Most flesh comes from the enlarged floral tube that grows up around the ovary.
    Pome
  161. What are examples of pome?
    Apples, pears, quince.
  162. Develop from a single flower with several to many pistils.
    Aggregate
  163. What are examples of aggregate?
    Raspberries, blackberries, strawberries.
  164. Develop from several to many individual flowers in a single inflorescence.
    Multiple fruit
  165. What are examples of multiple fruit?
    Pineapples, figs, osage oranges.
  166. What are the two types of dry fruits?
    • a. Dehiscent
    • b. Indehiscent
  167. Dry fruits that split at maturity.
    Dehiscent
  168. What are the types of the dehiscent dry fruits?
    • 1) Follicle
    • 2) Legume
    • 3) Silique
    • 4) Capsule
  169. Splits along one side or seam only, exposing seeds within.
    Follicle
  170. What are examples of follicles?
    Milkweed, larkspur, peonies.
  171. Splits along 2 side seams.
    Legume
  172. What are examples of legumes?
    Beans, peas, lentils, peanuts.
  173. Split along 2 side seams but seeds are on a central partition.
    Silique
  174. What are examples of siliques?
    Mustard family; cabbage, raddish, broccoli..(seeds don't fall out).
  175. Most common of the dry fruits that split, have at least 2 carpels split in various ways.
    Capsule
  176. What are examples of capsules?
    Lilies, poppies.
  177. Dry fruits that do not split at maturity.
    Indehiscent
  178. What are indehiscent dry fruits?
    • 1) Achene
    • 2) Nut
    • 3) Grain
    • 4) Samara
  179. Only the base of the seed is attached to the pericarp.
    Achene
  180. What are examples of achenes?
    Sunflower, strawberry "seeds".
  181. One seeded fruits, larger that achene's and the pericarp is harder and thicker, develop with bracts at the base like acorns.
    Nut
  182. What are examples of nuts?
    Chestnuts, acorns, hickory nuts.
  183. Pericarp is united with the seed and they can't be separated the seed.
    Grain (Caryopses)
  184. What are examples of grains?
    Corn, wheat, barley.
  185. Pericarp surrounding the seed is extended out in the form of a "wing".
    Samara
  186. What are examples of samaras?
    Ashes, elms, maples.
  187. What are adaptations for dispersal by wind?
    • 1. Curved Wings
    • 2. Inflated sacs
    • 3. Plumes
    • 4. Cottony or Willowy hairs
    • 5. Minute (Tiny) seeds
  188. What are curved wings?
    Maple samara
  189. What are inflated sacs?
    Hop hornbeam (which increases their buoyancy).
  190. What are plumes?
    Buttercup and Sunflower Families (Dandelions).
  191. What are Cottony or Willowy hairs?
    Willow Family.
  192. What are Minute (Tiny) seeds?
    Orchids and heaths.
  193. What are adaptations for dispersal by animals?
    • 1. Laxitives
    • 2. Hooks/Barbs
  194. How do laxitives help the adaptation for dispersal of fruit and seeds by animals?
    • a. Speeds the passage of the seed through the digestive trackes of birds and mammals.
    • b. Some seeds won't germinate unless they have passed through digestive acids.
  195. How might the need to pass through an animlas digestive track be an adaptive advantgae for that plant species survival?
    To prevent the digestive process from destroying the seed and to place the seed away from the plant.
  196. Stick to fur of animals. The seeds drop off somewhere else.
    Hooks/Barbs
  197. What are the adaptions for dispersal by water?
    • 1. Inflated/buoyant sacs
    • 2. Thick/Waxy coverings
  198. These sacs full of air will float large distances until they reach a suitable habitat.
    Inflated/buoyant sacs
  199. What is an example of an inflated/buoyant sac?
    Sedges
  200. Protection against the water it's in (prevents it from growing in the ocean).
    Thick/Waxy coverings
  201. What are the unique dispersal mechanisms?
    • 1. Mechanical/splitting action
    • 2. Humans
  202. In response to the heat of a warm-blooded animal, changes in humidity, or drying out, seed capsules will launch their seeds.
    Mechanical/splitting action.
  203. What are examples of mechanical/splitting action dispersal mechanisms?
    Touch-me-nots, dwarf mistletoes, filarees.
  204. How do humans act as unique dispersal mechanisms?
    Act as kowing and specific dispersal agents.
  205. What is the structure of a seed?
    • 1. Hilium
    • 2. Micropyle
    • 3. Seed Coat
    • 4. Embryo
  206. Point where ovule was attached to ovary wall.
    Hilium
  207. Tiny pore next to the hilum.
    Micropyle
  208. Covering of the seed...duh.
    Seed coat
  209. Cotyledons and immature plant.
    Embryo
  210. What is the embryo composed of?
    • a. Cotyledons
    • b. Embryo axis
  211. Cotyledons =
    Seed leaves-food storage organs.
  212. What is the embryo axis split up into?
    • 1) Epicotyl
    • 2) Hypcotyl
    • 3) Radicle
    • 4) Plumule
  213. Short stem axis above cotyledon attachment.
    Epicotyl
  214. Stem axis below cotyledon attachment.
    Hypocotyl
  215. Embryonic root.
    Radicle
  216. Embryonic shoot with immature leaves.
    Plumule
  217. What does endosperm serve as in monocots (Ex. corn)?
    Serves as a food storage tissue in addition to the single cotyledon.
  218. A seed must first be viable (capable of germination).
    Germination
  219. What is germination split up into?
    • 1. Dormancy
    • 2. Breaking of dormancy
  220. Brought about by mechanical or physiological circumstances (or both!).
    Dormancy
  221. What are the two types of dormancy?
    • *Mechanical
    • *Physiological
  222. Thick seed coat, lot of wax.
    Mechanical Dormancy
  223. ABA's (hormone).
    Physiological dormancy
  224. What is the breaking of dormancy?
    • a. Scarification
    • b. After Ripening
    • c. Stratification
    • d. Environmental regulation
  225. Nicking or breaking seed coat.
    Scarification
  226. Embryo needs further development, the seeds will not germinate in a freshly fallen fruit.
    After Ripening
  227. Cold temperature treatment.
    Stratification
  228. *The amount of available water and oxygen has an impact
    *Light may inhibit or stimulate development (depends on species preference)
    Environmental regulation

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