Showing posts with label Commensalism. Show all posts
Showing posts with label Commensalism. Show all posts

Thursday, August 12, 2010

Collection 2: Katie Harrison



I just wanted to add these pictures of my Aunt Sue's garden to the blog, because I wasn't able to really personalize many of my photos that I took when I visited her and I wanted to be able to prove that these pictures are in fact mine, not Google's or anybody elses (I have all the pictures from this post on my phone and camera, too :) ). The first picture is pretty much showing most of the backyard gardens, the second shows the big "island" garden where I found my hummingbird, the third is of the koi/frog pond, and the fourth is of my aunt by the pond with a tamed frog that hopped onto her arm. As for the pictures towards the bottom, I wasn't able to stick anything in the shots because the animals were moving too fast or the camera needed to be zoomed in.






Angiosperm: Angiosperm plants are those that flower and produce seeds or fruits. This cleome plant in my aunt's garden is an angiosperm plant because it produces seeds in pods and is a flowering plant.


Autotroph: An autotroph is an organism that gains its energy from organic food molecules instead of eating another organism. They usually are photosynthetic organisms. These ferns and other plants from my aunt's garden are autotrophs.



Commensalism: when two organisms' interaction causes one organism to benefit while the other is unaffected. This squirrel's nest at my aunt's house is an example of commensalism because the squirrels are able to make a home, while the oak tree is unharmed by the squirrels.


Littoral zone organism: an organism that thrives in the shallow part of a lake, where photosynthesis still can occur. My aunt has a koi fish pound, which happens to have a family of Leopard frogs living in it. I saw five different tadpoles, all about two and a half inches long, right under the surface of the water, eating algae. The second picture was taken later in the day, so the sun had moved and created a reflection on the pond. I had to use my hand to block out the reflection so the tadpole could be seen underneath the surface of the water. I thought it was a pretty nifty picture, so I added it too.


Pollinator: A pollinator is an organism that transfers pollen from one plant to another. Examples of pollinators are butterflies, bees, and hummingbirds. T his female Ruby Throated hummingbird at my aunt's house was actually feeding from a flower, which I've never seen before; usually I only see them at the hummingbird feeder.

Exoskeleton: An exoskeleton is the outer skeleton of most arthropods. This is when the skeleton of an organism is on the outside of the body, while the organs are on the inside of the body. In this picture is a cicada's exoskeleton shell which was recently molted; a cicada has to shed the exoskeleton when its body grows underneath the shell.

Tendril of a plant: Tendrils of plants are the stems that climb, attach, and support the growing plants. The tendrils of this Morning Glory on my deck already climbed the small trellace that's in its pot and the railing, so they are starting to attach to one another.


Anther and filament of a stamen: The anther and filament are the male reproductive parts of flowers, where the pollen is held. The anther of this lily is the brown structure that resembles rice at the end of the thin, white structures called filaments.



Ectotherm: An ectotherm is an organism with a body temperature that varies with it's surroundings. An example of an ectotherm is this oceanic sunfish, because the fish needs to bask in the sun and warmer water to heat up its body up after long, deep dives. On July 23, my family went on a whale watch cruise up off the coast of Block Island, Rhode Island, and while searching for whales, we came across this gigantic fish (yes, both pictures are of the same fish. I know, they look completely different, but I blame it on the cell phone camera). At first, the spotters on the ship thought it was a shark because the fish's dorsal fin was sticking out of the water, much like a shark's would. The marine biologist on the boat estimated this oceanic sunfish to weigh about 200 pounds and be about 5 feet wide by 5 feet tall, which is relatively small compared to the average weight of these monster-size fish (2,200 lbs). I took great interest in these fish, and found out that they eat mainly jellyfish and can even jump out of the water, up to 10 feet in the air! The picture on the left was taken with my camera as the sunfish was basking, while the one on the right was taken with my phone right before it completely flipped over and disappeared under the boat.



Eukaryote: A eukaryote is an organism that is made up of cells that contain a membrane enclosed nucleus and organelles. All animals, plants, and fungi contain these complex cells. During the whale watch, we encountered a pod of these friendly Common Dolphins, nearly 150 strong. The dolphins surrounded the boat, and literally everywhere you looked, there were dolphins jumping and flipping out of the water. I could hear them whistle to each other right next to the boat, and I even saw a few calves, or baby dolphins. They looked like swimming footballs. The adult dolphins were about 5-7ft long, while the calves were about 3 ft long. I was really excited to see these guys because this was my first whale watch, and my first time seeing dolphins in the wild and not at Sea World.

Tuesday, July 20, 2010

Autotroph - an organism that makes its own food. Through photosynthesis, autotrophs utilize carbon dioxide (from the air), water (pulled up from their roots), and light energy (from the sun) to make sugar. The autotroph then feeds off the sugar and gives off oxygen gas as a byproduct. Via the process of photosynthesis, a maple tree can produce complex organic compounds (sugars) from simple inorganic molecules (carbon dioxide), rendering it an autotroph.




Auxin producing area of a plant - a plant hormone that speeds up the growth rate of plant cells. Auxin can be found in the root tip and shoot tip of a plant. Without this natural stimulant, plant growth is stunted. One of the locations where auxin is produces on this jasmine plant is at the tip of the stem, right between the two leaves that are growing outward. Auxin also accumulates along the underside of the plant's roots.




Conifer leaves - leaves that are characteristically needle-like or scale-like and found on evergreen/ coniferous trees. Before I went bio-exploring, I held the ignorant assumption that conifer leaves had to be on trees. In actuality, conifer leaves can be found on not only trees, but also bushes and shrubs. Needle-leaved pine trees are what most of us think of in reference to conifers, but I found the following conifer leaves in a coniferous bush in my friend's backyard.



Commensalism - a relationship between two organisms in which one benefits and the other is neither helped nor harmed. The birds' nest in our Flowering Dogwood tree is an example of commensalism because the birds were able to make themselves a home while the tree remained unaffected.