f7 Marine Biology Diaz de Leon Homework & Study Guide #2 due:

Sessile lifesyles & Ecology

Vocabulary:

sessile broadcast suspension feed

pores collar cells spongin fibers

broadcast hermaphrodite dioecious monocious

larvae tunic siphon colonial

zooid lophophore brood hermatypic

clone medusa

benthic budding

HABITAT RESOURCES NICHE PREDATOR BIOTIC

POPULATION GROWTH NUTIENT CYCLE STANDING STOCK

DETRITUS DECOMPOSER BIOMASS TROPHIC PYRAMID CONSUMER

TROPHIC LEVEL BIOLOGICAL MAGNIFICATION ECOLOGY

ABIOTIC HERBIVORE COMPETITION SYMBIOSIS

PARASITISM MUTUALISM COMMENSALISM AUTOTROPHS

HETEROTROPHS PRIMARY PRODUCERS FOOD WEB

1. What features do sponges and tunicates have in common? How do they differ?

2. Diagram and lable the anatomy of a simple sponge and a solitary sea squirt.

3. What are the three Classes of Porifera and how do they differ in skeletal components?

4. What is the sexuality of sponges, tunicates (usually), and bryozoans?

5. How do tunicates protect themselves, mechanically and chemically? Sponges?

6. How do all the groups we've covered so far accomplish fertilization?

7. The zooids of both bryozoans and some colonial hydrozoans are actually clones. In what way are they unusual for clones?

8. Why is the trophic structure of an ecosystem represented by a pyramid? How does this relate to biomagification of non biodegradable materials like chlorinated hydrocarbons?