Class 11 Biology — Chapter 2: BIOLOGICAL CLASSIFICATION

What you'll learn

• ▸History and Limitations of Early Classification Systems
• ▸Whittaker's Five Kingdom Classification
• ▸Comparative Characteristics of the Five Kingdoms
• ▸Kingdom Monera: General Characteristics and Shapes
• ▸Metabolic Diversity in Bacteria
• ▸Archaebacteria
• ▸Eubacteria (True Bacteria)
• ▸Three-Domain System

Chapter Summary

--- PAGE 1 --- 10 BIOLOGY 11080CH02 CHAPTER 2 BIOLOGICAL CLASSIFICATION 2.1 Kingdom Monera Since the dawn of civilisation, there have been many attempts to classify 2.2 Kingdom Protista living organisms. It was done instinctively not using criteria that were 2.3 Kingdom Fungi scientific but borne out of a need to use organisms for our own use – for 2.4 Kingdom Plantae food, shelter and clothing. Aristotle was the earliest to attempt a more 2.5 Kingdom scientific basis for classification. He used simple morphological characters Animalia to classify plants into trees, shrubs and herbs. He also divided animals 2.6 Viruses, Viroids into two groups, those which had red blood and those that …

Practice Questions from this Chapter

Tap "Get Solution" on any question to ask our AI tutor.

1. Compare early and modern classification. Get Solution →
2. Distinguish characteristics of five kingdoms. Get Solution →
3. Identify challenging organisms to classify. Get Solution →
4. Who was the earliest to attempt a more scientific basis for classification by using simple morphological characters? Get Solution →
5. In R.H. Whittaker's Five Kingdom Classification, what are the sole members of the Kingdom Monera? Get Solution →
6. According to Table 2.1, the cell wall of organisms in Kingdom Fungi is composed of what substance? Get Solution →
7. What is the name for bacteria that are spherical in shape? Get Solution →
8. Archaebacteria that live in marshy areas and produce biogas are known as what? Get Solution →

Did you know?

• 💡 The earliest classification grouped plants into trees, shrubs, and herbs by size.
• 💡 Bacteria, from Kingdom Monera, were Earth's first life forms, billions of years ago.
• 💡 A giant fungus in Oregon spans 2,200 acres, one of Earth's largest known organisms.
• 💡 Scientists believe millions of species exist, with many still undiscovered.
• 💡 Some protists can move, make food, and even glow, defying simple categories.

Frequently Asked Questions

Related Chapters