Here is where you can find the bonus question for this unit. You can place your answer by clicking on the comment section of this post. Remember to put your first name and class period to your post so that I know who to give credit to. Bonus points are awarded as follows..... 1pt if you give the question some sort of serious answer. 2 pts if you answer it with some depth of thought and meaning above what was mentioned in class or in other's comments. 3 pts if you do the above and make a compelling argument with references to outside research. Good luck.
People who explore caves where there is running water but no sunlight often find them populated with unique types of fishes and insects. What hypothesis can you make to explain the ultimate source of energy for these organisms?
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Mr. Z's test spot.
Life can be sustained without sunlight because of chemosynthesis. producers take in carbon dioxide+ hydrogen sulfide+ oxygen and produce carbohydrates+ sulfur compounds. the producer is then consumed and the carbohydrates (energy) is passed on to the consumer
Cody period 2
Paige 2. life can exist in sunless caves with running water because the water carries nutrients and producers into the caves,providing lif with an energy source.It can also be brought in by visiting organisms,as stated on the website http://plants.ifas.ufl.edu/guide/caves.html.
in most caves there will be running water which can sustain life. the fish can eat each other and keep a balanced ecosystem.
Tanner 2
Ashley 2:The untimate source of energy when going through a dark cave with running water is usually from organisms & bacteria. The organisms & bacteria found in the cave can be carried in the cave & water then the fish & insects take them in. Another way they can survive is by using chemosynthesis, when they take in carbom dioxide they create user energy.
Caroline Pd. 2
The types of fish and insects that live in the dark with running water but no sunlight are a interesting type of animals. Until them, we thought that any living thing on Earth needed sunlight to survive but this discovery ended up changing everything. The ultimate source of energy for these animals ends up being each other. The animals eat one another in a food chain. As it says on the website, http://www.allthesea.com/Deep-Sea-Fish.html, food becomes a scarcity in the Mesopelagic Zone of the ocean. The fish have to rely on primary producers and every animal in between to the carnivore for food. So my hypothesis is "If the fish have each other to eat and recycle, then all the fishes in the deep sea will have an endless source of ultimate energy.
The life of other fish and insects can live without light. Chemosynthesis is the reason why the can live without sunlight.The producers take in many different chemicals. Which one of them is carbohydrates. This takes care of the producer, than last but not least the producer is consumed. Which means it gets eaten.
Lindsey, and Cassidy period 2
Samantha Period 2
My hypothesis for where cave gets its source of energy is from the outside world. This is possible because of run off from streams, rivers, and even lakes bringing algae and other organisms from the outside world into the cave. Other ways that energy is brought into caves is that some of the animals leave the cave and then come back. An example of this is bats when they leave the caves to find food then when they could back the poop and leave food for the bugs at the bottom of the cave. Also when animals die in the cave or even hit the cave floor they are eaten by the organisms that live down there. This is shown when a baby bat falls to the cave floor and is eaten alive by the organisms below.
Caroline Pd. 2
The types of fish and insects that live in the dark with running water but no sunlight are a interesting type of animals. Until them, we thought that any living thing on Earth needed sunlight to survive but this discovery ended up changing everything. The ultimate source of energy for these animals ends up being each other. The animals eat one another in a food chain. As it says on the website, http://www.allthesea.com/Deep-Sea-Fish.html, food becomes a scarcity in the Mesopelagic Zone of the ocean. The fish have to rely on primary producers and every animal in between to the carnivore for food. So my hypothesis is "If the fish have each other to eat and recycle, then all the fishes in the deep sea will have an endless source of ultimate energy.
Life is sustainted in caves because there are outside food sources that can flow into the water like algae. As for the fishes finding the food the have more neuromasts. Neuromasts are special nerves the can detect movement and vibrations in the water. Vibration detection helps cavefish find sources of food in the water, which, without eyes, they would not be able to see. Therefore, even without eyes cave fish can still find food and thrive.
Tristen Per 2
http://biologybiozine.com/articles/strange-biology/cavefish_dont_need_to_see.php
Tristen Per 2
Samantha Period 2
Work cited
http://www.goodearthgraphics.com/virtcave/cave_life/cave_life.html
http://www.bridalcave.com/kidspage/cavelife.htm
Sara Mikayla P2
Fishes and insects that live in caves with running water can survive by producers that use chemosynthesis.Chemosyntheses is a process of producing carbohydrates with chemical energy. There is no sunlight to feed the organisms,they need to find alternative nutrient sources. The only source of light is from bioluminiscent orgainisms. The only other food sources is what floats down from above, or when they eat other organisms.
http://www.allthesea.com/Deep-Sea-Fish.html
Heather period 7. chemosynthesis allows life to be sustained without sunlight, through chemosynthesis, carbon dioxide, hydrogen sulfide and oxygen are taken in and carbohydrates aand sulfer compounds are produced.
Autumn pd-7
Life can be sustained without sunlight because of chemosynthesis. Chemosynthesis helps bacteria make carbohydrates without light. They use carbon dioxide, hydrogen, and oxygen to create carbohydrates and sulfur compounds.
Derek 7
The ultamite source of energy for these animals is each other. Fish depend on the primary producers.
my hypothesis is that the life forms use Chemosynthesis. where they dont need light for energy. they can eat each other and maintain a ecosystem.
a.stine n.faux 7 pd
Life can be sustained without sunlight as long as there is still running water. Many organisms such as fish can live without sunlight such as the angler fish so its very possible why other things survive with no sunlight and little water.
Micayla, period 7
Since there is no sunlight in the cave, photosynthesis cannot take place. Chemosynthesis, on the other hand, is entirely possible. Sunlight is not needed for chemosynthesis, it converts carbon molecules and nutrients into organic matter using the oxidation of inorganic molecules in the water. As suggested by http://en.wikipedia.org/wiki/Chemosynthesis.
Tarina
Period 7
Certain organism have been studied and are known to undertake a process known as chemosynthesis. This is a recent process that scientists have been studying which involves no sunlight. What happens in this process is that carbon dioxide, hydrogen sulfide and oxygen are taken in and turned into carbohydrates and sulfur compounds. This occurs in primary producers. Most likely the fish and insects are consumers, so they feed off of these sunless primary producers. The consumers may also feed off of organisms that come downstream from perhaps a sunlit region of the stream. The primary producers create their own energy, then the insects (and some fish) feed off of them, then the fish feed off of the insects.
According to HowStuffWorks (http://animals.howstuffworks.com/animal-facts/cave-biology.htm), the fish and insects adapt to their ecosystem and feed off of what comes through, and other things like bacteria, fungi, etc. Apparently, some of these organisms descended from above ground species a long time ago. This is how fish and some insects can live in sunless caves.
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