IB DP Biology Mock Exam HL Paper 1A Set 5 - 2025 Syllabus
IB DP Biology Mock Exam HL Paper 1A Set 5
Prepare for the IB DP Biology Exam with our comprehensive IB DP Biology Exam Mock Exam HL Paper 1A Set 5. Test your knowledge and understanding of key concepts with challenging questions covering all essential topics. Identify areas for improvement and boost your confidence for the real exam
Question
What could be used as evidence for evolution?
I. Selective breeding of domesticated animals
II. The fossil record
III. Homologous structures
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
Answer/Explanation
Question
The graph shows the proportion of a bacterial population of Neisseria gonorrhoeae, displaying
resistance to the antibiotic tetracycline.
What can be deduced from this graph?
A. Bacteria with beneficial adaptations survive and pass on their genes.
B. Immunity to tetracycline is triggered by over-use of the antibiotic.
C. Genetic variation in this bacterial population is increasing.
D. Use of tetracycline inhibits the growth of antibiotic-resistant N. gonorrhoeae.
Answer/Explanation
Question
Data regarding the presence (+) or absence (–) of five traits in several different species are shown in the table.
Which cladogram best represents the relationship between the five species?
Answer/Explanation
Question
Where in the digestive system are lipids broken down?
Answer/Explanation
Question
Which encircled area shows a clade?