IB myp 4-5 Biology – Practice Questions- All Topics
Topic :Evolution-Biodiversity
Topic :Evolution– Weightage : 21 %
All Questions for Topic : Life Cycles,Natural Selection,Cell division,Mitosis,Meiosis,Reproduction,Biodiversity,Inheritance and variation,DNA and genetics
Question
Human activities are leading to the loss of biodiversity in the world’s ecosystem. The human activities listed below are the main causes of the loss of biodiversity.
(a) State the meaning of the term biodiversity. (1 mark)
(b) Outline how one specific human action could reduce biodiversity. (2 marks)
(c ) Explain, using scientific language, how the loss of one species might affect other organisms in the ecosystem.(4 marks)
▶️Answer/Explanation
Ans:
(a)Biodiversity refers to the term used to describe multiple ecosystem present in one another.
(b) Outline how one specific human action could reduce biodiversity.
(c) The loss of one species might affect other organisms in the ecosystem as they all rely on one another for source of energy, also known as food chain.
Question
a.Select the correct terms and drag and drop them to complete the diagram.
▶️Answer/Explanation
Ans:
Question:
Every species of organism is given a binomial, consisting of a genus and a species name. What is the genus and the species name for Western red cedar?
▶️Answer/Explanation
Ans: Genus name is Thuja and species name is plicata.