Question

someone have notes for diversity in living organism ​

Answer 1

Answer:

Biodiversity refers to variability.

• The diverse forms of organism need classification.

• The evolutionary history decides the phylogenetic classification.

• H. Whittaker proposed the five kingdom system of classification

• A distinct name is a need for identification.

• Common names are unscientific.

• Binomial nomenclature is scientific naming of organisms.

• Taxonomic hierarchy is the framework of classification which helps in appropriate placing of organisms.

1. Monera

• These are prokaryotic, unicellular, autotrophic or heterotropic organisms.

2. Protista

• These are unicellular and eukaryotic, autotrophic or heterotrophic organisms.

• They are further classified as protistan algae, slimemoulds, and protozoa.

3. Fungi

• Multicellular and eukaryotic organisms having plant like and animal like features. They may be parasitic or saprophytic.

4. Plantae

• These are multicellular, eukaryotic and autotrophic organisms. They are further classified.

• Thallophyta – Thallus like body, mostly autotrophic and aquatic.

• Bryophyta – Simple plants with no vascular system. They are amphibious.

• Pteridophytes – They are land plants with true vascular system.

• Gymnosperms – They are land plants bearing naked seeds.

• Angiosperms – They are flowering plants with seeds covered by fruits.

5. Animalia

• These are multicellular, eukaryotic and heterotrophic organisms. They are further classified.

• Porifera – Pore bearing organisms.

• Coelenterata – Organisms with hollow gut.

• Platyhelminthes – unsegmented flat worms.

• Nematoda – Unsegmented round worms.

• Annelida – Metamerically segmented worms.

• Arthropoda – These are animals with jointed appendages.

• Mollusca – Soft bodied animals.

• Echinodermata – Spiny skinned animals.

• Chordata – Dorsal nerve cord,

notochord and gill slits.