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DVD Life on the Reef
| Question | Answer |
|---|---|
| Coral reefs are being degraded by what? | Coastal development, over exploitation, and water pollution |
| The location of this film production was where? | Australia's Great Barrier Reef |
| This film explores the importance of reproduction as a means of what? | Genetic variation and dispersal |
| How have immobile corals dispersed themselves throughout tropical shallow seas? | External fertilization which produces a planktonic larval stage which is transported in ocean currents |
| Describe the feeding behavior for the garden eel. | Picks edible items out of passing water |
| Describe the feeding behavior for the goatfish. | "Snuffles" in sand picking out small organisms |
| Describe the feeding behavior for the sea cucumber. | Ingests sand, digests nutritious items, picks edible items off substrate with oral tentacles, or filters plankton from water with tentacle net |
| Describe the feeding behavior for the bumphead parrotfish. | Grazes on algae growing on dead coral and excretes sand |
| Describe the feeding behavior for the spiny chromis. | Picks plankton out of water as it swims about |
| Describe the feeding behavior for the manta ray. | Cruises about the reef, filters plankton from the water. |
| Describe the feeding behavior for the blubbler jellyfish. | Swims over reef snaring plankton with stinging tentacles. |
| Describe the feeding behavior for the feather star. | Filters passing water with net of arms. |
| How does an individual polyp reproduce into the multitude of polyps that make up a coral head? | Asexual budding (cloning) |
| Do the waters surrounding the coral reef have abundant or scarce nutrients? | Scarce |
| What are algae living mutualistically within the tissue of corals? | Zooanthellae |
| What camouflage technique is used by the octopus? | Color/texture change to blend with background |
| What camouflage technique is used by the razorfish? | Vertical position among seawhips and flat profile |
| What camouflage technique is used by the cuttlefish? | Rapid color change ability |
| What camouflage technique is used by the sleeping parrotfish? | Mucus "cacoon" to disguise odor |
| What camouflage technique is used by the anemone shrimp? | Shelter of tentacles and blending coloration |
| What is the production/exchange of gametes in large numbers called? | Spawning |
| List three organisms that fed on drifting coral larvae. | 1. Reef Fish 2. Jellyfish 3. Manta Ray |
| What month does spawning occur on the Great Barrier Reef? | November |
| How many years ago did the coral reef evolution begin? | 240 million years ago |
| In what ancient sea did the coral reef evolution begin? | Tethys Sea |
| How do corals protect their "space"? | By special stinging tentacles to defend border |
| How do sponges protect their "space"? | Overgrowth to shade out competitors and toxin in their tissue to discourage encroachment |
| Give an example of mutualism. | Zooxanthellae within coral tissue |
| Give an example of parasitism. | Blood sucking louse on fish |
| Give an example of commmensalism. | Flatworms on coral tissues. |
| What reproductive technique do cuttlefish use? | Deposits fertilized eggs among coral branches |
| What reproductive technique do coral trout use? | Courting, then rush to surface for simult. spawn. |
| What reproductive technique does the sea cucumber use? | Release of sperm/eggs as it extends into the current. |
| What reproductive technique do hard corals use? | Simultaneous release of packets of sperm and eggs. |
| What reproductive technique does the giant clam use? | Expulsion of sperm and eggs into the water. |
| What reproductive technique does the crown-of-thorns seastar use? | Release of sperm/eggs into the water. |
| What reproductive technique do polychaete worms use? | Release of a body section containing gametes. |
Created by:
gmoore730
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