reproduction

• New plant develops with an already growing plant


  1. Vegetative propagation

  2. Food accumulates in any part of plant

  3. Bud formation

  4. New plant develops from bud
• Leaves develop into new plant

  1. Leaves grow bud on margin

  2. Buds give rise to adventitious roots

  3. Roots embed in soil for water absorption

  4. Buds develop into new plant
• Male reproductive organs of rabbit

  • Gonads
  • Ducts
  • Testes (enclosed in scrotum)
  • Seminiferous tubes
  • Vas deferens (2)
  • Penis
  • Prostate gland
  • Cowper's gland
  • Seminal vesicle
• STDs

  Sexually Transmitted Diseases, diseases transferred from person to person through sexual relations
• Examples of STDs

  • AIDS
  • Gonorrhea
• Population control

  Establishing a maintained quality of life, ensuring necessities like food, water, studies, residence and medicines for all
• Population control is important for a prosperous society
• Fixation


  The process by which new areas are colonized by genetically identical or closely similar offspring of the parent organism
• Pollination

  The process by which pollen grains are transferred from the male reproductive organ (anther) to the female reproductive organ (stigma) of a flower
• Types of pollination

  • Self-pollination
  • Cross-pollination
• Self-pollination

  • Pollen from anther transferred directly to stigma of same flower or another flower on same plant
  • Some plants have specialized mechanisms that facilitate self-pollination
• Cross-pollination

  • Pollen from anther of one flower transferred to stigma of different flower on another plant of same species
  • Promotes diversity within plant populations
  • Facilitated by wind, insects, birds, and other animals
• Adaptive characters of wind-pollinated flowers

  • Reduced and inconspicuous petals
  • Numerous, small, and lightweight pollen grains
  • Dangling stigma and exposed anthers
  • No nectar or fragrance
• Adaptive characters of insect-pollinated flowers

  • Brightly colored petals
  • Nectar production
  • Fragrance
• Germination

  The process by which a seed develops into a new plant or seedling, marking the beginning of growth and establishment of a new individual
• Conditions for germination

  • Water
  • Temperature
  • Oxygen
  • Light
  • Moisture and humidity
• Methods of germination

  • Epigeal germination
  • Hypogeal germination
• Epigeal germination

  • Cotyledons (seed leaves) pushed above soil surface by elongation of hypocotyl
  • Cotyledons become green and perform photosynthesis
• Hypogeal germination

  • Cotyledons remain below soil surface
  • Plumule (embryonic shoot) emerges and develops into aerial parts