AndreaW 26-39

39. Ectotherm- Cold Blooded Animals-Below is a picture of salmon swimming at the salmon hatchery in Juneau Alaska. A cold blooded animal cannot regulate its body temperature and so homeostasis within the organism is very difficult to achieve since the organisms body temperature changes with the environment that it is in. Some animals need to migrate to warmer temperatures, many others bask in the sun in order to warm up.

38. Organism of different Phylum- Chordata- The picture below is of two eagles. Chordates have a backbone. This phylum includes birds, fish, amphibians, reptiles and mammals. They are characterized by a notochord, jointed appendages and segmentattion of the body. They have a nervous system and a brain. They can be cold or warm-blooded. Birds are cold-blooded

37. Organism of different Phulum- Arthropoda-Below is a picture of a crab. It belongs to the group crustaceans in the Arthropoda phylum. They have segmented external skeletons and jointed appendages. Aside from the arthropods in this phylum are also insects, and spiders. It is the most successful of all phylum. This picture was taken at the fish hatchery in Juneau Alaska.

36. Organisms of different Phylum- Echinodermata- Below is a picture of a starfish. An echinoderm has spiny skin composed of hard calcium rich plates below the skin. The echinoderms are radially symmetric as adults. These organisms appeared nearly 600 million years ago. There are over 6,000 species of them. Echinoderms are found in the marine environment. This picture was taken at the fish Hatchery in Juneau Alaska.

35. Amniotic Egg- Below is a picture of salmon amniotic eggs. It is an egg that is isolated and protected from the environment by a more or less impervious shell during the period of development. It is also self sustaining only requiring oxygen that penetrates the shell. This picture was taken in the Salmon Hatchery in Juneau Alaska.

34. Different Biomes-Tundra- Below is a picture of the Mendenhall Glacier in Juneau Alaska. The tundra is a region of latitude below the polar ice region. It is a grassland that is open windswept and often boggy. It covers one fifth of the earths land surface and there is very little rain or snow that falls in this region. These ecosystems are fragile and particularly susceptible to global changes such as global warming.

33. Carbohydrate- Below is a picture of pasta. A carbohydrate is an organic compound consisting of a chain or ring of carbon atoms to which hydrogen or oxygen are attached at a ratio of 2:1 A carbohydrate includes sugars, starches, glycogen and cellulose. Many marathon racers eat a meal of carbohydrates before a race in order to use the stored energy stored in its bonds.

32. Fermentation- Is the process by which energy is extracted from organis compounds without the use of oxygen. Yeast in the presence of sugar forms carbon dioxide. Fermentation is an anaerobic process requiring no oxygen. Below are two pictures of yeast fermenting in order to make homemade pizza dough in my house.

31. Autotroph-An autotroph is usually a green plant that can make its own food through the process of photosynthesis. The raw materials are carbon dioxide and water in the presence of sunlight and the resulting products are oxygen and sugar. These plants are in my vegetable garden. Below you can see tomato, zucchini, pepper and a variety of spices.

29. Modified leaf of a plant-The cactus has modified leaves called spines. Having less leaf surface reduces water loss during photosynthesis and transpiration. The spines can also deter predators from eating the cactus. This picture was taken at Clark Garden Albertson, Long Island.

29. Adaptation of a plant-This is a picture of a plant with huge leaves. It grows in the shade of other larger trees that block the sunlight. It has adapted to producing larger leaves since the plant with the larger leaves is the one that can collect sunlight for photosynthesis. This picture was taken at Clark Garden Albertson, Long Island

28. Phloem- The bark in a vascular plant. It is the food conducting tissue of a plant. After photosynthesis makes sugar in the leaves, the phloem cells transports it down the plant. It is basically composed of various kinds of parenchyma cells,fibers and sclereids. If you remove a complete ring of bark around the tree you will kill the tree. The products of photosynthesis will not be able to get to the lower part of the plant.

27. Autotroph- Below is a picture of my grape vine. It is an autotroph, or an organism able to build all the organic compounds from inorganic compounds during the process of photosynthesis.

26. Modified leaf of a plant-Below is a picture of a pine tree or gymnosperm. The leaves are known as needles and are an effective way for a plant to reduce the amount of water loss due to transpiration during the process of photosynthesis. This picture was taken in my back yard.