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University of Winnipeg Plant Reproduction. Topic # 2022. Mr. Christensen. Pearson College Asexual Reproduction.

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plant reproduction

University of Winnipeg

Plant Reproduction

Topic # 2022

Mr. Christensen

Pearson College

asexual reproduction
Asexual Reproduction
  • Asexual reproduction is the formation of new individuals from the cell(s) of a single parent.
  • It is common in plants, less so in animals.
plant asexual reproduction
Plant Asexual Reproduction
  • Above ground Stems arch over and take root at the tips, forming new plants (Forsythia, Raspberry and Strawberry)
  • Horizontal above ground stems are called stolons

Pearson College

plant asexual reproduction4
Plant Asexual Reproduction
  • Underground stems that serve for food storage and reproduction. Rhizomes, bulbs, corms and tubers

Jeruasalem Artichoke, potato (tuber)

Quackgrass Rhizomes

Irises and day lilies

Pearson College

plant asexual reproduction5
Plant Asexual Reproduction

Amaryllis Bulb

Gladiolus Corm

Pearson College

plant asexual reproduction6
Plant Asexual Reproduction
  • Leaves—Mitosis along the meristems at the leaf margins produce tiny plantlets that fall off and can take up an independent existence.

Pearson College

plant asexual reproduction7
Plant Asexual Reproduction
  • Roots—Plants can send up stems from their roots to reproduce. Dandelion, Poplar, Aspen

California Pictures

plant asexual reproduction8
Plant Asexual Reproduction
  • Plant Propagation—Deliberate propagation by asexual means to keep particularly desirable traits. Grafting removal of a twig (scion) from a desired plant and inserting it into a notch of a cut stump (stock plant).

University of Arizona

plant asexual reproduction9
Plant Asexual Reproduction
  • Cuttings—Using stems, leaves or roots of plants for asexual reproduction.

Pearson College

plant sexual reproduction
Plant Sexual Reproduction
  • Sexual Reproduction—Sperm carried in the pollen from the male part of a flower fuses with the egg in the female part of the flower.

plant sexual reproduction11
Plant Sexual Reproduction
  • Pollination—Transfer of pollen from the male to the female part of the plant.
  • Self-Pollination—Pollen of a plant pollinates a flower of the same plant (only some plants can do this, apple trees for example cannot)

University of the Western Cape


University of Illinois Urbana Champaign

plant sexual reproduction13
Plant Sexual Reproduction
  • Cross Pollination—Pollen of a plant pollinates another plant.
  • Hybrid—The offspring of genetically different plants.

University of the Western Cape

pollination vectors
Pollination Vectors
  • Wind (grasses)
  • Water (aquatic plants)
  • Insects (bees, beetles, butterflies and wasps)
  • Mammals (bats/rodents)
  • Birds

University of the Western Cape

plant sexual reproduction15
Plant Sexual Reproduction
  • Complete Flower—A flower having all floral structures, including the calyx (sepals, corolla (petals), stamen (anthers and filaments) and pistil (stigma, style and ovary). (Rose)

Texas Technological University

plant sexual reproduction16
Plant Sexual Reproduction
  • Incomplete Flower—A flower which lacks one or more floral structures
  • Perfect Flower—A flower which has male and female floral structures in the same flower. (Rose, Apple, Tomato and Wheat)

Texas Technological University

plant sexual reproduction17
Plant Sexual Reproduction
  • Imperfect Flower—A flower which has male and female floral structures in separate flowers. (Spruce, Ash and Maples
  • Monoecious Plant—A plant species having separate male and female flowers on the same plant.(example corn, cucumber, Birch)
  • Dioecious Plant—A plant species having male and female flowers that are on separate plants. (example buffalograss, Hollies, Yews, Ash, Asparagus and Maple.)
plant sexual reproduction18
Plant Sexual Reproduction

Male and Female flowers on a Pumpkin plant to/pollen.htm

plant use of the sun s energy
Plant use of the Sun’s Energy

1% Photosynthesis

2% Heat the mass of the plant

6% Heat the air

10% Reflected

43% Converted to heat and radiated

48% Used to evaporate water