Apologia Marine bio Module 12 | Baamboozle - Baamboozle

What is the corona for on a rotifer?

It is on the head, corona (crown) of cilia that draws a vortex of water into the mouth, which the rotifer sifts for food.

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What is the primary producer in a hard bottom shelf community?

Kelp, it needs a hard substrate to attach to.

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Why are Kelp forests so beneficial to the eco system?

These underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

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Benthos

Community of organisms which live on, in, or near the bottom of bodies of water

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List 2 of the primary consumers in a vegetated soft bottom shelf community.

Manatee, nudibranch, sea urchins, sea turtles, and Canadian geese

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Define subtidal.

always will be underwater

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Which of the meiofauna we looked at have 1. A basal disk, 2. A corona, 3.2 toes, 4. Is unable to attach to the substrate.

1. Hydra, 2.rotifer, 3.rotifer, 4 nematode

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Planktonic

marine organism that is unable to swim strongly enough to move against the current

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What is the key food source in an unvegetated soft bottom community?

detritus that floats in from other communities (like estuaries) diatoms are prevalent here, but not in enough numbers to provide a plentiful food source.

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List 4 differences between muddy soft bottom communities and sandy softbottom communities.

muddy:finer sediment, less O2, more organic matter, more deposit feeders. Sandy: larger sediment particles, more O2,little organic matter, more suspension feede

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What is the difference between deposit feeders and suspension feeders?

deposit feeder vacuum up what is on the bottom.(common to muddy bottom)suspension feeders filter what is floating in the water(common to sandy bottoms)

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Where do kelp beds/forests grow in the tropical regions of the world and why?

Where coral reefs don’t grow, western coast of Africa and south America, because cool polar water is drawn up into these areas. (43 and 57 °F)

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