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Plant Adaptations

Plant Adaptations. Plant Adaptations. Inherited characteristics that increase the plant’s chances of survival. Chemical Defenses. Some plants produce chemical compounds that are toxic to insects that may feed on them. Milkweed is poisonous to humans & most other creatures.

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Plant Adaptations

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  1. Plant Adaptations

  2. Plant Adaptations • Inherited characteristics that increase the plant’s chances of survival

  3. Chemical Defenses • Some plants produce chemical compounds that are toxic to insects that may feed on them. Milkweed is poisonous to humans & most other creatures.

  4. Aquatic Plant Adaptations • Aquatic plants live in mud with little oxygen. • Adaptations • Tissues with large air-filled space: oxygen can diffuse from the part above ground to the roots • Seeds that float in water

  5. Desert Plant Adaptations • They must be able to survive strong winds, daytime heat, sandy soil, & infrequent rain. • Adaptations • Extensive roots: increase surface area to increase water absorption • Reduced leaves (spines): to decrease water loss • Dormant seeds: only germinate when water is abundant • Thick stems: store water

  6. Carnivorous Plants • Live in wet, acidic environments with little nitrogen • Adaptations • Ability to trap & digest insects as a nitrogen source

  7. Sun Dew Pitcher Plant Venus Fly Trap

  8. Seed Dispersal • Decreases competition & over-crowding • Can introduce the seed into a new habitat

  9. Seed Dispersal via Air • Seeds are carried by the wind. • Examples: dandelions, tumbleweed, maple trees

  10. Seed Dispersal via Water • Seeds or fruits are dropped from the plant into rivers, lakes, or seas (the seeds float) • Example: coconut

  11. Seed Dispersal via Animal • Attach to animal fur • Burrs • Ingestion followed by excretion at a different location • Apples • Birds eat fruit & throw away the seeds • Berries

  12. Seed Dispersal via Self • Forceful ejection by various mechanisms • Examples: dwarf mistletoe, pea plant, squirting cucumber

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