Presentations Pt. 1

Question 1

In flying fishes, what is the difference between mono and bi plane?

Answer 1

• Mono = enlarged pectoral fins
• Bi = enlarged pectoral and pelvic fins

Question 2

Explain the ground effect during flight in flying fishes?

Answer 2

• helps with minimizing drag and increasing lift in order for fish to be able to glide above water

Question 3

The caudal fin is only used for swimming in flying fish. T/F explain

Answer 3

• F = caudal fin is also used for taxiing

Question 4

Which physiological challenges can be a driving force for the evolution of poison systems in fishes?
A. Defense
B. Population size
C. Competition
D. Predation
E. A, C, and D

Answer 4

• E

Question 5

In fishes, the use of poison (venom) has no cost to the fish. T/F Explain.

Answer 5

• F = it is energetically costly, leaves fish defenceless

Question 6

What affect does poison have on the prey of predatory fishes?
A. Immobilization
B. Cause pain
C. Nervous system paralysis and circulatory system coagulation.
D. A and C
E. All of the above

Answer 6

• D

Question 7

Anadromous lamprey evolved their osmoregulation mechanisms _________ in relation to Teleostei (Bony fish).
A. Convergently
B. Orthogonally
C. Divergently
D. Synergistically
E. Disjunctively

Answer 7

• A - convergently

Question 8

In seawater environments, what do the ionocyte proteins in the gills of lampreys do?
A. Absorption of O2
B. Secretion of Na+ and Cl- ions
C. Uptake of Na+ and Cl- ions
D. Secretion of CO2
E. Absorption of CO2

Answer 8

• B

Question 9

What changes occur in the ratio of unsaturated fatty acids to saturated fatty acids in the gills as a larval lamprey (ammocoete) undergoes metamorphosis into a juvenile?
A. No change occurs (stays about the same).
B. Increase in favour of saturated fatty acids.
C. Increase in favour of unsaturated fatty acids.
D. Fluctuation between the two with no consistent pattern.
E. Decline in both unsaturated and saturated fatty acids.

Answer 9

• B?