Shawn Cheek Marine Bio Pd 5 Midterm Exam 1. sessile – permanently attached or fixed; not free-moving benthic – the bottom under a body of water neritic – of or relating to the region of the sea over the continental shelf which is less than 200 meters – limited to or able to live only within a narrow range of saltwater concentrations ecology – the relationship between organisms and their environment nekton – actively swimming animals in a body of water spring tide – the exceptionally high and low tides that occur at the time of the new moon or the full moon when the sun, moon, and earth are approximately aligned niche – the function or position of an organism or population within an ecological community estuary – the wide part of a river where it nears the sea; fresh and salt water mix prokaryote – a unicellular organism having cells lacking membrane-bound nuclei aphotic – the region of a body of water that is not reached by sunlight and in which photosynthesis is unable to occur phytoplankton – photosynthetic or plant constituent of plankton; mainly unicellular algae autotroph – an organism capable of synthesizing its own food from inorganic substances, using light or chemical energy hermaphrodite – a plant or animal that normally has both male and female reproductive organs population – all the organisms that constitute a specific group or occur in a specified habitat 2.
The Essay on The Clean Water Act Of 1977
As swans drift with the current on a secluded lake in upper Canada they think not of the water they are in but of dreams of the past and wants for the future. On the other hand, seals off the coast of Northern California fear for their lives every day of humans exploiting their natural habitat. Many things can endanger water born animals, and most all of these come directly from humans. The ...
sublittoral – below low tide; always covered by saltwater; fish, worms; gills, regulate salt intake littoral – in between high and low tides; when the tide comes in the water can erode this zone; corr aline algae, barnacles; photosynthesis, tolerance of salt water supra littoral – above high tide; saltwater never reaches this zone; black lichen, some green algae; lungs, photosynthesis 3. highly developed eyes – better sight large brains – more advanced than other mollusk sink sac – help in capturing prey, defense suckers – help in capturing prey mantle – enhanced protection 4. protection by mantle, protection by arms / tentacles , better reactions when distance is shorter 5. – most important source of nutrition light – photosynthesis to keep alive zooplankton – another source of nutrition hard surface – for the coral to build carbonate – the accumulation of this helps build the reef 6.
symbiosis – a close, prolonged association between two or more different organisms of different species that may, but does not necessarily, benefit each member parasitism – the relation between two different kinds of organisms in which one receives benefits from the other by causing damage to it mutualism – an association between organisms of two different species in which each member benefits commensalism – relationship between two organisms of different species in which one derives some benefit while the other is unaffected 7. Sponge Jellyfish movement: sessile moves feeding: filter catch prey with tentacles protection: poisons: none radial reproduction: asexual sexual 8. 9. gulls, octopus protozoans, bacteria seaweed, phytoplankton dog whelks and starfish would become top carnivores because there is nothing left that eats them protozoans and shrimp are greatest in numbers because they feed so many other organisms, gulls and octopus are least in numbers because they have nothing to feed 10.
seaweed can stay attached and not get knocked around by waves, seaweed gets light for photosynthesis, coral needs a hard bottom to grow on, there is protection for small animals in between the rocks.
