THE LIVING WORLD Flashcards
5 features that any living organisms have
- Growth
- Reproduction
- Metabolism
- Consciousness
- Cellular Organization
Asexual Rep. occurs in?
- Hydra
- Fungi
- Yeast
Organisms that do not reproduce?
- Mule (f. horse m.donkey)
- worker bees
- infertile human couples
Unicellular Multicellular (Growth)
G and R mutually inclusive
G and R mutually exclusive
Defining Features
Possessed by only living organisms.
Living and Non-living (Growth)
- Intrinsic and Extrinsic Growth
- irreversible and reversible Growth
Growth
increase in no. or mass of cells
Plants and Animals (Growth)
- localized and diffused
- indefinite and definite growth
Reproduction
Produce progeny of one’s own kind.
Consciousness
Ability to sense environment and respond to it.
Physical, Chemical and Biological Stimuli.
- H²O, temperature, ph
- Pollutants
- Photoperiod
Not consciousness but still living.
Coma patients, regarded as “Brain Dead”
Metabolism
Sum of all reaction in our body.
Can be demonstrated in a cell-free system.
These are living rxn that can be performed outside living body.
Catabolism and Anabolism
- Breaking down
- Building up
Cellular Organization
All living organisms are composed of one or more cells.
Cells => Tissue => Organ => Organ sys
=> Organism
Most obvious feature in living organisms.
Consciousness
Classification
Process of grouping into different categories based on easily observable characters.
Systematics.
Study of different kinds of organisms, their diversities and the relations between them.
Number of discovered species ?
1.7-1.8 M
Biodiversity?
Number and Type of species present on the earth
Taxonomy
Branch of science that deals with classification of living organisms based on easy observable characteristics. It is the science of theories and procedures of:
1. Characterization
2. Identification
3. Classification
4. Nomenclature
Nomenclature for Plants and Animals
- International Code for Botanical Nomenclature.
- International Code of Zoological Nomenclature
Father of Taxonomy
Carolus Linnaeus
Genus and Species
1. Case
2. Language
3. Font
4. Underlinings
5. Founders name
- Uppercase and Lowercase
- Latin
- Italics
- If written by hand
- Abbreviated without italic font
Taxon
Aka Rank. Different categories that together make up the Taxonomical Hierarchy