Grade 12 Biology: Biological Classification
A worksheet covering key concepts in biological classification for Grade 12 students, including taxonomy, phylogenetic trees, and dichotomous keys.
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Grade 12 Biology: Biological Classification
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Read each question carefully and provide your best answer. For multiple choice questions, circle the correct option. For short answer questions, write your response in the space provided.
1. Which of the following taxonomic ranks is the most inclusive (contains the greatest number of species)?
Family
Order
Class
Phylum
2. Which of the following provides the strongest evidence for evolutionary relationships between organisms?
Similar habitat
Analogous structures
Homologous structures
Similar diet
3. The scientific discipline concerned with naming and classifying organisms is called .
4. A is a diagram that shows the evolutionary relationships among various biological species based on similarities and differences in their physical or genetic characteristics.
5. All organisms within the same genus can interbreed and produce fertile offspring.
True
False
6. The three domains of life are Bacteria, Archaea, and Eukarya.
True
False
7. Briefly explain the concept of binomial nomenclature and provide an example.
8. Differentiate between a monophyletic group and a polyphyletic group in the context of cladistics.
9. Analyze the cladogram below and answer the questions that follow:
a) Which two organisms are most closely related?
b) What is the common ancestor of all organisms in this cladogram?
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