EEB142 Exam 2 Key

EEB142 Exam 2 Key - EEB142 Exam 2 Name_ PUT YOUR NAME &...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
EEB142 Exam 2 Name______________________________ Page 1 of 6 PUT YOUR NAME & UID ON EVERY PAGE OF THE EXAM BEFORE STARTING. Five points off if you don’t Write only in the space provided on the front of the page. Any writing on the back will not be graded. If you need it, we will provide with a fresh exam page. Exam is 100 pts total. 1. Tunas and Lamnid Sharks: a. (4 pts) How does the streamlined shape of tunas and lamnid sharks increase their swimming efficiency? It decreases pressure drag by having a rounded front end and decreases induced drag by having a tapered rear. b. (4 pts) Besides their exterior morphology, name and describe an aspect of their interior anatomy that increases their swimming efficiency. They have a counter current exchange mechanism where the arteries leading away from the swimming muscles lie next to the returning veins. Heat generated by the muscles warms the exiting arterial blood. The warmth is transferred to the returning venous blood instead of being lost to the environment. Thus heat is retained in the muscles, increasing their efficiency. c. (2 pts) Why is energy-efficient swimming an advantage in the epipelagic environment as opposed to other marine environments? Food resources in the epipelagic are patchy, and nekton may have to travel long distances between them.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
EEB142 Exam 2 Name______________________________ Page 2 of 6 2. (9 pts) Branching and massive corals compete with each other. Describe the advantage that branched corals have in competition with massive corals. Describe the two advantages that massive corals have in competition. Branched coral grow faster than massive corals and shade them out (overtop). Massive corals have an advantage in aggressive encounters where mesenterial filaments and sweeper tentacles are used by corals to attack each other. Massive corals are also less susceptible to storm damage. 3. (8 pts) While traveling in the tropical ocean you observe some coral atolls, where a series of coral reefs forming a circle. While there are some palm trees and sand on top of some of the reefs there is no solid land in or around the rings. How can the atolls form far from land and why are they circles? The reefs form around islands that subsequently sink. Thus, the island
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 6

EEB142 Exam 2 Key - EEB142 Exam 2 Name_ PUT YOUR NAME &...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online