Week 6: invertebrates and vertebraes

Question 1

Phylum Moleca

Answer 1

Gastropoda (snails, grazers). Bivaliara: two shells, clams and muscles, parasitic sometimes (like the ones that don;t kill the fish host)

Question 2

Arthropoda

Answer 2

inc ANichinda (mites) Univariate (cilldmbola and insecta) and crustatia

Question 3

Crustacea

Answer 3

calcium and chitin
Ostracoda (sea shrimp?) Copeods (microcrustaceans) Branci[poda (water fleas and shrimp that filter water), Decapoda (crayfish, crap, largeish, key prey) Isopds (sow and pill bugs) Amphipods (scuds)

Question 4

Fish

Answer 4

fishes (without jaw, and with jaw, pharyngeal (sharks and rays). In that, bony fish with large diversity and sensory orgains, and lateral line to locate others,

Question 5

Tetrapods

Answer 5

includes the larger size organisms
Amphibians: full aquatic life and sensitive to pollution
and mammals, birds and reptiles

Question 6

Two measures of diversity

Answer 6

1) Species richness } total num of species in area, uses the diversity index and measures
2) species evenness } measures the proportion of species in an area, if one bigger then uneven

Question 7

alpha vs beta diversity

Answer 7

alpha is within a habitat, beta is between habitats, to show differences in diversity

Question 8

Evolution

Answer 8

source of diversity: relies on time and genetic/gambite isolation
therefore the older the habitat, the more diversity, the more endemism

Question 9

Geographic isolation due to vegetation

Answer 9

vegetation can help create a template for isolation, by creating partitions, and creates the riparian zone

Question 10

Dispersal patterns

Answer 10

high dispersal, high cosmopolitan (can survive transport, large numbers) Generalists are more likely to survive in different habitats.