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AG1003
Plant Biology
| Question | Answer |
|---|---|
| what are the different types of algae | alveloata, brown, diatoms, dingoflagellates, green, heterkants, haptophytes, red |
| features of the alveolata algae | packed sacs under the outer membrane, chlorophyll a & c, photosynthetic plastids are in 3 membranes. |
| features of brown algae | have a differentiated thallus shape into stiples, blades and holdfasts. They are keystone species in the ocean, are commercially important, have 2 flagella when at reproductive stage, dominate rocks in temperate regions, asexual/sexual reproduction. |
| features of the diatoms | these are the biggest primary producer in the ocean, have chlorophyll a, c, fucoxanthin and xanthophyll, unicellular, have silica coating that doesn't degrade. |
| features of the dingoflagellates | 2 flagella (1 posterior and 1 transverse), can do all three types of energy harvesting - autotroph, heterotroph and mixotroph. Binary fission reproduction, chlorophyll a, c, carotenoids or NONE. 2nd biggest ocean procuder (2nd to diatoms) |
| features of green algae | 17, 000 species, as old as red algae, have chlorophyll a, b, b-carotein and other carotenoids, none/2 flagellates, micro -macroscopic in size. Commercially important. unicellular. |
| feathers of the heterokants | motile or sessile, one or 2 flagella, one smooth and one hairy or both smooth, have 2 membranes around the chloroplast, chlorophyll a, c and fuxoxanthin, have laminarin and oils. |
| features of the haptophytes | mostly marine, significant in food webs, are producers and consumers, unicellular, colonial flagellates or non-motile flagellates, chlorophyll a, c and carotenoids,do not have the normal 9:2 microtubule arrangement in the flagellate |
| features of the red algae | one of oldest species, unicellular or multicellular, chlorophyll a, absorb blue light and means they are are quite deep in the ocean, asex and sex reproduction. |