Symbiotic Relationships and Metamorphosis By: Brianna Shields November 1, 2004

DO NOW Please lay your ecology flashcards out on your desk ( 4 across x 5 down) with the definition side up. Please lay your ecology flashcards out on your desk ( 4 across x 5 down) with the definition side up. Once I’ve checked yours, take turns working with your seat partner to learn the terms on your flashcards. Once I’ve checked yours, take turns working with your seat partner to learn the terms on your flashcards.

GOAL To distinguish developmental patterns found in various animals (Metamorphosis) To distinguish developmental patterns found in various animals (Metamorphosis) To compare several symbiotic relationships To compare several symbiotic relationships

Symbiosis Symbiosis Symbiosis 1. Close relationship between two organisms 2. One lives near, on or in the other

Symbiosis Commensalism Commensalism One organism benefits and the other is not effected Ex: 1. Tiny mites living on human eyebrows

Eyebrow Mites

Symbiosis Mutualism Mutualism Both organisms benefit Ex: 1. Bacteria in the human digestive system

Microbes in Human Gut

Symbiosis Parasitism Parasitism One organism benefits, the other is harmed Ex: Dog fleas

What type of symbiosis is this? Ruminants in cow gut, digest the hay/plant material. Cow food gets digested, ruminants get a meal Ruminants in cow gut, digest the hay/plant material. Cow food gets digested, ruminants get a meal

What type of symbiosis is this? Egyptian Plover removes parasitic insects from the backs of horses and cattle Egyptian Plover removes parasitic insects from the backs of horses and cattle

What type of symbiosis is this? Mosquitoes on humans Mosquitoes on humans

What type of symbiosis is this? Barnacles on the backs of crabs are fed as the crab moves through the water- but, the crab is left unaffected Barnacles on the backs of crabs are fed as the crab moves through the water- but, the crab is left unaffected

What type of symbiosis is this? Remora fish attach themselves by suckers to sharks. This allows them to filter in food while the shark swims- this relationship has no apparent effect on the shark Remora fish attach themselves by suckers to sharks. This allows them to filter in food while the shark swims- this relationship has no apparent effect on the shark

What type of symbiosis is this? The Yucca Moth obtains food from the Yucca plant- while in return carries pollen from plant to plant for reproduction The Yucca Moth obtains food from the Yucca plant- while in return carries pollen from plant to plant for reproduction

What type of symbiosis is this?

Life Cycles Complete Metamorphosis Complete Metamorphosis 1. Fast, drastic changes in the form of an organism 2. Appearance looks totally different in each stage 3. Ex: Butterfly, Ladybug, Frog

Butterfly Life Cycle

1. Laid under leaves2. Caterpillar actively eats 3. Cocoon/ Chrysalis protects during development 4. Wings, bright colors sips liquids

Ladybug Life Cycle

1. Yellow rice masses laid on a leaf 2. Long body, 6 legs, actively eats 3. Pupa revealed when larva splits open 4. Mobile (moves a lot)

1. Egg masses laid in water 2. Tadpole/polliwog swims, eats, grows- has gills and tail 3. Tadpole with legs- sprouts arms and legs- has gills and tail 4. Froglet- has lungs, still has tail 5. Adult- no tail, uses lungs

Frog Life Cycle

Life Cycles Incomplete Metamorphosis Incomplete Metamorphosis 1. Slow, gradual changes in the form of an organism 2. Appearance doesn’t really change- young resembles adult 3. Ex: Grasshopper

1. Egg on water surface or near water on plants 2. Nymph- actively feeds on algae- stays in water 3. Adult- has wings, leaves water, moves well

What type of metamorphosis does this life cycle represent? Explain…