Do now
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Transcript of Do now
Do now
• Take out your homework • How do vacuoles and lysosomes work
together in a cell?
Single Celled Organisms Quiz
• 1) In what way does mitochondria and chloroplast work together?
• 2) Make 3 columns; Bacteria Diatoms Dinoflagellates
• Put the accurate description under the appropriate column;
Descriptions
• Silica Cell wall• Cellulose Cell wall• Has flagella to move around• Earliest photosynthetic life• Lacks a nucleus (simple organism)• Can make and take in food• Important decomposers• Has an eye spot
Effect of Salt water on Seed Germination Lab
• How does the ocean affect terrestrial plants that live near the ocean?
• Set it up (I want to make sure we get that done today so its coming first)
• Then we will go over the chapter
Marine Producers
Algae Vs. Angiosperms
• They are pretty different– Examples of algae are diatoms, dinoflagellates,
kelp, sea lettuce etc.– Examples of marine angiosperms are sea grasses
and mangroves• So what is the differences between them?
Differences
• Structure:– Algae are non vascular• Don’t have specialized structures to transport nutrients• Absorb nutrients directly from the water
– Angiosperms are vascular• Have roots that absorb nutrients and other specialized
structures that transport them throughout
Specialized Structures
Remember looking at this under a microscope in Biology?
Differences
• Reproduction– Algae lack flowers for reproduction– Angiosperms use flowers, pollen and seeds to
reproduce.
Algae Structure• Algae is different than land
plants:– Blade: similar to leaves,
where the majority of photosynthesis occurs
– Gas bladder: Keeps the algae afloat, which is important to absorb light and maintain photosynthesis
– Stipe: Similar to a stem, supports the blades
– Holdfast: Anchors the algae to a stable substrate. UNABLE to absorb nutrients from the sediment (making it different than roots)
Algae Structure
• Video
Algae Types
• 3 Major types:– Red– Green– Brown
• What’s the difference between them all?– Different pigments for photosynthesis– This makes them better for different environments• Certain wavelengths travel deeper into the ocean than
others
Each can live in different depths• Because of the different pigments– Green live closest to the surface– Brown can live deeper than the green algae– Red can live in the deepest out of all the algae
Algae reproduction• It’s a cycle, consisting
asexual reproduction and sexual reproduction
• Sporophytes make spores (which are haploid)
• Gametophytes make gametes which fuse to make a zygote (diploid)
Breaking it down
Asexual
Sexual
Beach Plants
• Their root systems stabilize the sand and create dunes…KEEP OFF OF THEM!
• Grow in the upper beach, away from the salt water
• Similar adaptations to desert plants…–Waxy coatings–Water storage
Angiosperms: Mangroves
• Mangroves are trees that grow partly submerged in the water.– During high tide you may not see their prop roots
Prop roots
Ecological Function
• Their roots decrease water flow, which leads to the deposition of a lot of nutrients
• Also serve as protection for small fish from larger prey
Reproduction
• Seed pods develop while still on the tree
• They fall into the ocean and float until low tide, where they will find a place to start growing
Angiosperms: Seagrasses
• Reproduce with flowers and pollen tubes.– The only flowering plants that live underwater
• Often found in lagoons behind barrier reefs
Ecological Impact
• Usually serve as a protective area for fish and also a food supply for marine organisms.
• Their interlocking root stabilize the sediment as well
• Lots of cool organisms found living around seagrasses