Moodle test 1

Question 1

What is the role of the frontal cilia in suspension feeding bivalves?

Answer 1

Bind particles in mucus and transport to the marginal food grove

Question 2

Growth rate of mussels on the sea bed is likely to be a function of?

Answer 2

Size of the patch, feeding rate and flow speed

Question 3

The two main predators on the intertidal rocky shore are?

Answer 3

Sea stars and whelks

Question 4

Macrofauna are defined as benthic organisms that are?

Answer 4

Retained oon 500 um sieves

Question 5

Starting from the sea bed and moving up into the water column what is the correct order of the different layers that make up the benthic boundary layer?

Answer 5

• Diffuse sub-layer
• viscous sub-layer
• logarithmic layer
• diffuse sub-layer

Question 6

Which of the following best represents the ecological hierarchy from the bottom-up perspective?

Answer 6

• Individual
• population
• community
• ecosystem
• biosphere

Question 7

Which of the following organisms would you NOT expect to find in the midlittoral zone?

Answer 7

Periwinkle snails

Question 8

In soft sediment ecology trophic-group amensalism is a term that describes?

Answer 8

The negative effects that deposit-feeders have on suspension-feeders through destabilizing sediments

Question 9

Hydrobia ulvae increases the quality of the sediment it ingests by?

Answer 9

Re-ingesting faeces after allowing them to be colonized by bacteriaa

Question 10

What part of the visible light spectrum penetrates the deepest in the oceans?

Answer 10

Blue