Key terms

Question 1

poll of the recent

Answer 1

The close we get to present day the more rock we have because it is younger and has not been forced to servive millions of years to be found.

Question 2

sessile vs sedentary vs mobile/ vagile

Answer 2

sessile –> attached to substrate

sedentary–> not physically attached but cant really move

Mobile –> can move

Question 3

Nektonic vs Plantonic Vs Benthic (Epifaunal and Infaunal)

Answer 3

Nektonic –> swimmers

Planktonic –> floaters (like plankton)

Benthic –> live on or in substrate

            Epifaunal --> line ON substrate
            Infaunal --> Live IN substrate

Question 4

Predators/ scavengers vs Grazers (which are restricted to photic zone if they live in water) vs suspension Feeders

Answer 4

Predators

grazers

Suspension feeders
a) active (physically pump water through the body to get food

         b) passice (needs current)

Deposit feeders
a) selective (sort through sedament and pic out organic)

          b) Non-selective (eat sed and all like worms do)

Question 5

Photic zone

Answer 5

Where light can penetrate the water (so plats grow hear)