CK-12 Foundation
Ck 12: Life Science: Mammal Characteristics
[Free Registration/Login may be required to access all resource tools.] What is a mammal? They walk, run, swim, and fly. They live in the ocean, fly in the sky, walk on the prairies, and run in the savanna. There is a tremendous amount...
CK-12 Foundation
Ck 12: Biology: Annelids
[Free Registration/Login may be required to access all resource tools.] Discusses characteristics of annelids like earthworms.
CK-12 Foundation
Ck 12: Life Science: Fungi Classification
[Free Registration/Login may be required to access all resource tools.] Scientists used to think that fungi were members of the plant kingdom. They thought this because fungi had several similarities to plants. However, there are a...
CK-12 Foundation
Ck 12: Life Science: Mammal Classification
[Free Registration/Login may be required to access all resource tools.] Traditionally, mammals were divided into groups based on their characteristics. Scientists took into consideration their anatomy, their habitats, and their feeding...
CK-12 Foundation
Ck 12: Life Science: Salamanders
[Free Registration/Login may be required to access all resource tools.] Salamanders are characterized by slender bodies, short legs, and long tails. They are most closely related to the caecilians, little-known legless amphibians. Learn...
CK-12 Foundation
Ck 12: Life Science: Humans and Primates
[Free Registration/Login may be required to access all resource tools.] The great apes are the members of the biological family Hominidae, which includes four living genera: chimpanzees, gorillas, humans, and orangutans. Learn more about...
CK-12 Foundation
Ck 12: Life Science: Arachnids
[Free Registration/Login may be required to access all resource tools.] Arachnids are a class of joint-legged invertebrates in the subphylum Chelicerata. They live mainly on land but are also found in freshwater and in all marine...
CK-12 Foundation
Ck 12: Biology: Plant Life Cycle Overview
[Free Registration/Login may be required to access all resource tools.] Introduction to the alternation of generations, a life cycle characteristic of all plants.
BiologyWise
Biology Wise: The 7 Unmistakable Characteristics of Life
Describes the seven characteristics that define life - cells, homeostasis, heredity, use of energy, reproduction, response to environmental stimuli, and evolution and adaptation.
Estrella Mountain Community College
Online Biology Book: The Nature of Science and Biology
Use the scientific reasoning and critical thinking to take an in-depth look at the basics of biology.
CK-12 Foundation
Ck 12: Biology: Organization of Cells
[Free Registration/Login may be required to access all resource tools.] Learn how multicelled organisms have specialized cells that do specific jobs and single celled organisms exist without the help of other cells.
Other
Biology at Shaw High School: What Do Living Things Need to Survive?
Discusses the interrelatedness of all living things and of ecosystems and biomes, and what organisms need to survive and to maximize the carrying capacity of an ecosystem. This explanation is followed by a series of activities including...
BiologyWise
Biology Wise: Comparison of Living and Non Living Things
Compares the characteristics of living and non-living things based on respiration, life processes, response to stimuli, death, and composition.
Alabama Learning Exchange
Alex: Introduction to Biology: Organisms
This lesson plan introduces basic biology principles and the characteristics of living organisms.
CK-12 Foundation
Ck 12: Characteristics of Life
[Free Registration/Login may be required to access all resource tools.] Videos, texts, activities, and assessments about the factors that characterize living things.
Rutgers University
Rutgers Center for Vector Biology: Mosquito Biology
This page covers the life cycle, habitats and other details about mosquitos.
CK-12 Foundation
Ck 12: Life Science: Plant Characteristics
[Free Registration/Login may be required to access all resource tools.] What do you think distinguishes plants from other organisms? Learn more about plant characteristics in this learning module produced by CK-12.
BiologyWise
Biology Wise: Three Domains of Life
Describes the characteristics of Archaea, Bacteria, and Eukarya, the three domains of life.
BiologyWise
Biology Wise: Life Cycle of Angiosperms
Describes the characteristics of angiosperms, or flowering plants, the parts of the flower involved in reproduction, pollination, fertilization, and the production of fruit and seeds.
CK-12 Foundation
Ck 12: Life Science: Evolution Acts on the Phenotype
[Free Registration/Login may be required to access all resource tools.] Natural selection acts on the phenotype (traits or characteristics) of an individual. On the other hand, natural selection does not act on the underlying genotype...
BiologyWise
Biology Wise: Chlorophyta: The Green Algae
Chlorophyta are classified as green algae but may actually be different colors. Its characteristics are described, its significance as a food source for marine organisms, and its positive and negative aspects.
BiologyWise
Biology Wise: Phaeophyta (Brown Algae)
Discusses the characteristics of Phaeophyta or brown algae, where it is found, its classification, some facts about it, and its uses.
BiologyWise
Biology Wise: Facts About Mealworms
Information about mealworms, including types, habitat, physical characteristics, using them as pet food, raising them, whether they can be pests, their role in the life cycle of the darkling beetle, and a list of quick facts about them.
BiologyWise
Biology Wise: Platyhelminthes Reproduction
Describes the characteristics of Platyhelminthes, or flatworms, and how they reproduce.