Podcast
Questions and Answers
What is one of the main criteria used by R.H. Whittaker for classifying organisms?
What is one of the main criteria used by R.H. Whittaker for classifying organisms?
- Color of the organism
- Cell structure (correct)
- Mode of respiration
- Geographical distribution
Which kingdom was divided into two domains in the three-domain classification system?
Which kingdom was divided into two domains in the three-domain classification system?
- Monera (correct)
- Protista
- Animalia
- Fungi
What significant characteristic was used to unify all organisms in the earlier classification system under 'Plants'?
What significant characteristic was used to unify all organisms in the earlier classification system under 'Plants'?
- Ability to photosynthesize
- Presence of chlorophyll
- Presence of a cell wall (correct)
- Reproductive methods
Which two groups were incorrectly placed together under algae, despite their differences?
Which two groups were incorrectly placed together under algae, despite their differences?
What material is found in the cell walls of fungi, differentiating them from green plants?
What material is found in the cell walls of fungi, differentiating them from green plants?
Study Notes
Five Kingdom Classification
- Proposed by R.H. Whittaker in 1969.
- Kingdoms identified: Monera, Protista, Fungi, Plantae, and Animalia.
- Classification criteria include cell structure, body organization, mode of nutrition, reproduction, and phylogenetic relationships.
Monera and Three-Domain System
- Monera is divided into two domains in the three-domain system.
- Remaining eukaryotic kingdoms fall under a third domain, leading to a six-kingdom classification.
Historical Context
- Earlier classification merged diverse groups like bacteria, blue-green algae, fungi, mosses, ferns, gymnosperms, and angiosperms into the ‘Plants’ kingdom.
- The commonality among these organisms was the presence of a cell wall.
Classification Issues
- Unification of prokaryotic bacteria and cyanobacteria (blue-green algae) with eukaryotic organisms led to generalization and oversight of significant differences.
- Grouped unicellular and multicellular organisms (e.g., Chlamydomonas and Spirogyra) together under algae.
- Lack of distinction between heterotrophic fungi and autotrophic green plants despite differences in cell wall composition (fungi have chitin, plants have cellulose).
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Explore the Five Kingdom Classification System proposed by R.H. Whittaker in 1969. This quiz covers the various kingdoms, historical context, and issues regarding organism classification. Test your knowledge on Monera, Protista, Fungi, Plantae, and Animalia.
