- Biology Notes for UPSC IAS Prelims (Part I)
- Biology - Home
- Biology - Structure and Functions
- The Fundamental Unit of Life
- Biology - Tissues
- Biology - Animal Tissue
- Diversity in Living Organisms
- Biology - Plantae Kingdom
- Biology - Animalia Kingdom
- Biology - Vertebrata
- Biology - Transportation in Humans
- Biology - Transportation in Plants
- Biology - Excretion
- Biology - Control and Coordination
- Biology - Hormones in Animal
- How do Organisms Reproduce?
- Biology - Sexual Reproduction
- Biology - Reproduction in Animals
- Reaching the Age of Adolescence
- Biology - Heredity and Evolution
- Biology - Life Processes
- Biology - Respiration
- Microorganisms: Friend and Foe
- Biology - Why do We Fall Ill
- Biology - Natural Resources
- Biology - Our Environment
- Conservation of Plants and Animals
- Biology Useful Resources
- Biology Part 1 - Online Quiz
- Biology Part 1 - Online Test
- Biology Part 1 - Quick Guide
- Biology - Useful Resources
- Biology - Discussion
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Biology - Vertebrata
The organisms of this kingdom have a true vertebral column and the internal skeleton structure.
Classification of Vertebrata
Vertebrates are further classified as −
Let’s discuss each of them in brief −
The organisms of this group are typically different types of fishes.
Fishes can live only in water.
The skin fish is covered with scales/plates.
Fish use oxygen dissolved in water by using gills
The tail of fish helps in their movements.
Fishes are cold-blooded organisms and their hearts have only two chambers.
Fishes lay eggs.
The organisms of amphibia have mucus glands in the skin, and they have three-chambered heart.
Amphibian can live in water as well as on land.
The organisms of amphibian respire through either gills or lungs.
The organisms of amphibia lay eggs.
The organisms of this group are cold bolded.
The organisms of reptilia lay eggs with tough coverings.
The organisms of Aves group are warm-blooded.
The organisms of Aves group lay eggs except a few, such as bat.
Most of the Aves have feathers.
The organisms of Mammalia group are warm-blooded and they have four-chambered hearts.
Mammalia are typically characterized for their mammary glands.
Mammary glands produce milk to nourish the young one.
Most of the mammals produce live baby; however, a few of mammals, such as, the platypus and the echidna lay eggs.
Mammals’ skin has hairs along with sweat and oil glands.