Chapter 2: Biodiversity and Classification
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (15 张)
What is biodiversity?
The full range and variation of all living things in a region. Can be described in different levels, such as genetic diversity, species diversity and ecosystem diversity
What is a biodiversity hopspot?
An area with at least 1500 species of endemic vascular plants and that has lost more than 70% of its natural vegetation
What is the biological species concept?
A definition of species based on whether members can interbreed and produce fertile offspring
What is the morphological species concept?
Definition of a species based on physical characteristics of members
what is the phylogenic species concept?
Definition of a species that states a species is the smallest group if individuals that can be traced back to a common ancestor
What is an ecosystem?
The biotic and abiotic factors and their interactions in an area
What are 2 ways of measuring biodiversity? Explain them
• Spatial scales: Where individuals of the same classification group are distributed in an area • Temporal scales: How many organisms are distributed over a period of time
What are 4 reasons we should classify animals?
• A way of organising information • Allows biologists to analyse information about organisms • Allows biologists to communicate with eachother • Invasive species can be identified more easily
Name all the taxonomic levels from largest to smallest
Domain, kingdom, phylum, class, order, family, genus, species
What are the 3 domains?
Eukarya, archaea and bacteria
What are the characteristics seperating eukaryotes and prokaryotes?
• Eukaryotes: Contains DNA in a nucleus, and has membrane bound organelles • Prokaryotes: No nucleus or membrane bound organelles
Name the 6 Kingdoms
• Animalia • Plantae • Protista • Fungi • Archaea • Bacteria
What 3 characteristics organisms be classified by?
• Physical characteristics • Methods of reproduction (sexually or asexually) • Molecular sequences (sequences in DNA)
What are 5 characteristics of monocots?
• One cotyledon • Parrallel veins • Vascular bundles in complex arrangement • Fibrous root system (very thin) • Floral parts (eg. petals) in multiples of 3
What are 5 characteristics of dicots?
• Two cotyledon • Net like veins (branch out on leaf) • Vascular bundles in ring • Taproot usually present (large central root) • Floral parts (eg. petals) in multiples of 4 or 5