Tuesday, September 1, 2009

Different Biomes

Picture 35 - This is a picture of a stream. In this stream exists crustaceans, amphibians, reptiles, and many more animals. Animals also come by this stream to drink from it. A biome is one of the major terrestrial ecosystems, characterized by climatic and soil conditions.
Picture 36 - This picture was taken from the roof top of a building. Birds and other mammals live in these trees. It is a biome and provides its own ecosystem to its inhabitants.

Phloem

Picture 33 - What I aimed for in this picture was the stem in the center of the picture that is running diagonally across the picture. This picture was taken in the park. Phloem is a food conducting tissue basically composed of sieve elements, vasrious kinds of parenchyma cells, fibers, and sclereids.
Picture 34 - This is a picture of the stem as well. Inside this stem exists phloem which is responsible for bringing all the nutrients gathered in the roots around the plant. This picture was taken in the park.

Cambium

Picture 31 - Cambium is a layer of delicate meristematic tissue between the inner bark or phloem and the wood or xylem, which produces new phloem on the outside and new xylem on the inside in stems and roots, originating all secondary growth in plants and forming the annual rings of wood.a layer of delicate meristematic tissue between the inner bark or phloem and the wood or xylem, which produces new phloem on the outside and new xylem on the inside in stems, roots, etc., originating all secondary growth in plants and forming the annual rings of wood. This picture was taken in a nearby park.
Picture 32 - This picture was taken close to the picture above. The bark has been removed from this tree. Inside this removed bark and wood existed the cambium.

Niche

PIcture 27 - This is a picture of a spider and its web. A niche is the natural habitat of an animal.
This picture was taken by my grandma's house.
Picture 28 - This is a picture of fish. They are living in a pond and it is their natural habitat. The niche an organism occupies is the sum total of all the ways it utilizes the resources of its environment. A niche may be described in terms of space utilization, food consumption, temperature range, approriate conditions for mating, requirements for moisture, and other factors.


seed dispersal

Picture 25 - This is a picture of a butterfly. It was taken while I was walking around outside my grandma's house. Seeds can be dispersed through animals like this because after this butterfly is done feeding on the nectar of the flower, the seeds from the flower might cling onto the butterfly's leg and then brush off somewhere else.
Picture 26 - This is a picture of the flower floating along the water was taken near by a pond. This picture shows that seeds can also be dispersed through water. Water can bring seeds to various areas and spread the species wide and far.

Cuticle layer of a plant

Picture 22 - This picture was taken at my grandma's house. It is a picture of the cuticle layer of a plant. The cuticle layer of a plant is a waxy coating that helps prevent desiccation which is plants losing water to air.

Picture 22 - This is also another plant that belongs to my grandma. Unlike their freshwater ancestors, most land plants have only limited amounts of water available. As an adaptation to living on land plants developed this cuticle layer.

Genetic Variation Within A Population

Picture 21 - This is a picture of two different colors of the same species of flower. These flowers were found near a pond. This shows genetic variation within a population of flowers.
Picture 22 - This picture was taken on the side of a road. My cousin is standing in front of a population of flowers. They are all the same species but have different colors showing that there has been some variations in their genetic makeup.