A Six Kindom System of Classification
Taxonomy, the Science of Classification
Classification
Classification System
Archaebacteria, Eubacateria, Monera
Archaea
Archaea Morphology
Tree of Life-Eubacteria
The Microbe Zoo-Eubacteria
Kingdom Monera
Overview of Monera
Kingdom Monera-The Prokaryotes
Fungi, Plants, Animals
Bioimages-The Virtual Field Guide
Kingdom Fungi
The Fungal Kingdom
The Plant Kingdom-Scientific and Common Names
Plants-Natural Perspective
Plantae-Systemaics
Guide by Animal Group
Kingdom Animal
Classification of Animals
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Kindgom Animalia-Homo saiens
Human beings are multicellular organisms.They have trillions of cells. The cells make up tissues, which make up organs, which make up organ systems, such as the circulatory system and the digestive system. Cells are specialized and have specialized functions to help humans live and carry out lfe functions. Cells reproduce or divide to make new cells to replace old or dead cells.
Humans obtain food by ingestion. They consume food. Humans are omnivorous, meaning they can eat either plant or animal. Food enters at the mouth and goes through the digestive system. There, the nutrients are removed and carried to the blood stream, which carries them to all the cells of the body. Cellular waste products are excreted into the blood, where they enter the urinary system and are excreted. Solid wastes are removed through the digestive system.
Humans can live in many environments because they are able to adapt their environment to accomodate them. They can live in very warm climates, such as deserts or tropical rain forests. They can live in cold areas, such as taiga or tundras. Humans can build shelter or make and obtain clothing that allows them to live in a variety of habitats.
Humas reproduce sexually. Males produce haploid sex cells called sperm. Females reproduce haploid sex cells called eggs. When eggs and sperm combine, a zygote is formed, that has the genetic mataerial of both parents. After a nine month gestation period, the fetus is born. The child is carried in the female parent until birth.