Throughout the lab I noticed the behavioural change of the Daphnia as their environments were changed. Depending on the additive some began to move around in circles more than before and some less. Because the Daphnia are transparent I was able to observe their organs with and without the additive. (A labeled picture can be found below.)…
Select a marine organism from the region and discuss its adaptation to the environment due to natural circumstances or pollution.…
4.05 Adaptations of Organisms Andrea Aponte My name is Andrea and this is my fish, Lily. She is a Gunnel Fish. I’m going to give you some advices on how to catch her…
It must also filter large amounts of water to strain these particles, and it does this by rhythmically beating its legs, pumping water through the space under its carapace, and using the bristles on its legs as strainers. Because algae are the daphnia’s main food source, it is clearly and advantage for the daphnia to stay where the algae are most densely populated. This is done by sight, but not by spotting the algae at a distance and heading for it. If the daphnia stumbles across a group of algae, the light seen by the daphnia will be slightly red, as most of the blue light in sunlight is removed as it passes through the cloud of algae. The slight redness of the light will cause the daphnia to remain in the location of the algae. The daphnia is in turn eaten by other, larger organisms, making it an important link in the aquatic food…
This species thrived for multiple reasons. The first reason was because of the temperature. Temperature is defined as the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch. Well the Sea lamprey prospers at a temperature between one to twenty degrees Celsius. To reach that temperature the eel like animal must swim as deep as four thousand meters. Another reason why the Atlantic Ocean was a perfect place to call home was because of the environment. The sand and strong current are ideal factors when looking for a place to lay eggs. When preparing to give birth, the female lamprey will burrow itself into the sand so that it may finish the task at hang with no interruptions. Another reason the sand is ideal is because it possesses a quick cover or a hiding place if the lamprey has to hide itself or its eggs. Another reason for the strong current is because in times of danger the Sea lamprey swims best in the strong current and can escape any enemy trying to end them. These factors help the little sea devil thrive because most of their predators cannot go after them in a strong currents. But that hasn't stopped some from…
To determine the principals of osmoregulation, we sampled two lobsters from each tank and there were three different tanks which the water ranged in salinity. The experiment is to determine whether the six lobsters tested are osmoregulators or osmoconformers, this is done by obtaining a sample of hemolymph. The first step of the lab is to prepare the needle and syringe that will be taking the hemolymph. The syringe size was 1 ml, and the intention is to collect between 0.5 and 1.0 ml of hemolymph. The needle size was 20 gauge, because anything smaller would destroy the hemolymph cells. Then the lobster was picked up with a firm grim around the dorsal celphao-thorax region and flipped over to expose the ventral side. The hemolymph was be extracted from the central midline of the ventral pre-branchial region, of the first section. Although, before piercing the membrane, the bevel of the needle had to be pointing up. When the needle was injected into the membrane, it did not have to go any deeper than 2-3 mm into the hemocyannin (blood cavity). If the needle went to deep it would strike nerves of the lobster. This procedure was completed six times on six different lobsters, to determine if the lobsters are osmoregulators or osmoconformers.…
Natural Selection is the environments’ favoring of a particular trait in a population. Organisms use many different methods to adapt to their environments. In this experiment one must use brine shrimp and salt water solutions to represent organisms and their environments. Some organisms like the brine shrimp adapt to changes in their environments. Brine shrimp eggs produce cysts when their environmental conditions aren’t being cooperative. Brine shrimp eggs grow hard and brown when their environment does not have enough oxygen to support them. This also happens when there is too much salt content in their environment. When the eggs become hard and brown, they can be kept for long periods of time in a dry, oxygen- free environment. When the cyst is returned to its normal environment, it continues on with its development and eventually hatches. Brine shrimp are the perfect organisms to do experiments on because they only require a short time for development. The person conducting the experiment must use 5 beakers, each with different amounts of salt in them. The point of the experiment is to see how the brine shrimp eggs respond in each dish of salt concentrate. Once the salt and water have been combined, one must place approximately twenty brine shrimp on a microscope slide. After twenty four hours, some of the brine shrimp eggs should have hatched while some have partially hatched or not hatched yet. This must be done at the twenty four hour mark and the forty eight hour mark. The data should be written down on the chart given in the experiment papers. The hatching viability must be found by adding the number of hatched eggs at twenty four hours and the hatched eggs at forty eight hours and dividing it by the initial amount of eggs placed in the petri dish.…
* Cryptic - Bottom dwelling and reef fish often use chromatophores to blend in perfectly with their surroundings. Often, these fish are bottom dwellers that blend in with the stratum they rest on.…
Cuttlefish skin is composed of three layers that have up to 200 pigment cells called chromatophores per square millimeter. The first and deepest skin layer is white in color to act as a light retracting base for the other layers. The middle layer produces blue, red, green, orange and even pink through the iridescent light reflecting cells inside the skin. The outer most layer consists of pigment cells that are like tiny disks of color which are too small to see. The layers of specialized skin also contain tiny plates of the protein chitin, called Iridophores, which are responsible for the light reflection. Cuttlefish camouflage is impressive not only because of the speed at which these animals can change patterns and colors but also because their camouflage is apparently very effective at deceiving the visual capabilities of their varied…
Regeneration is the biological mechanism whereby organisms restore lost or damaged cells. This process can be used to replace organs, tissues and limbs on a small to large scale. Each type of regeneration requires different amounts of energy, resources and time. Orconectus rusticus (crayfish), compete for food, survival and mating. They have large claws that are vitally important in competition and survival. This species has developed the ability to regenerate these claws over time if they are lost or damaged. The motives and forms of regeneration in crayfish have evolved due to many factors. The effects that regeneration has are linked to the various needs that have evolved in the…
When hermit crab eggs hit salt water, they immediately open to produce small larvae-like or plankton swimming creatures called zoea. They develop by in stages, each stage lasting about a week. At each molt, they grow larger and add more appendages.…
Seadragons usually live a solitary life, but males and females come togeather to breed. The female lays up to 200 eggs at a time. The males are responsible for holding and protecting the eggs, But instead of a pouch male sea dragons have a spongy brood patch on the underside of the tail where females deposit her eggs during mating. The eggs are fertilized during the transfer. The males incubate the eggs and carry them till they’re ready to hatch, releasing miniature sea dragons into the water after about four to six weeks. They are independent from the moment they hatch. It only takes about two years for seadragons to reach full size and age where they can reproduce.…
TEXTBOOK – Krough, BIOLOGY a guide to the natural world, 5th edition, 2011. Pearson Education Inc.…
People are scared of lampreys because of their razor like teeth. Many people also get scared because they hear that lampreys are bloodsucking fish. Just imagine a fish with rows of razor sharp teeth just waiting to grasp onto your leg and cut open you leg and suck your fluids and blood. Most people don’t even think that lampreys are real just some type of cryptid creature like the loch ness monster. Lampreys are real not cryptid. Although lampreys are scary, they are actually good for the environment. According to Burlington Free Press and Huffington Post many people described what a lamprey looks like, just picture a 3ft long eel with a giant suction cup on the head that is filled lots of razor sharp teeth.…
Holometabolous insects undergo significant morphological changes during their development. The larvae (mostly grub-like) are very different in appearance to the adults and undergo metamorphosis into the adult form via a non-feeding pupal stage where the body tissues are broken down and rearranged into the adult morphology.…