Question 1

What is the importance of biodiversity in ecosystems according to the IB DP Biology syllabus?

Accepted Answer

Biodiversity is crucial for ecosystem stability and resilience. It ensures a variety of species that can adapt to changes and maintain ecosystem functions. In the IB DP Biology syllabus, biodiversity is emphasized as it supports ecosystem services such as pollination, nutrient cycling, and climate regulation, which are essential for human survival and ecological balance.

Question 2

How do human activities impact ecosystems and biodiversity?

Accepted Answer

Human activities such as deforestation, pollution, and urbanization significantly impact ecosystems and biodiversity. These activities lead to habitat destruction, climate change, and the introduction of invasive species, which can result in the loss of species and degradation of ecosystems. The IB DP Biology curriculum highlights the need for sustainable practices to mitigate these impacts and conserve biodiversity.

Question 3

What are the key strategies for conservation of biodiversity covered in IB DP Biology?

Accepted Answer

The IB DP Biology syllabus outlines several strategies for biodiversity conservation, including the establishment of protected areas, habitat restoration, and the implementation of sustainable resource management practices. Additionally, it emphasizes the importance of international cooperation and legislation, such as the Convention on Biological Diversity, to protect endangered species and habitats globally.

Question 4

How does the concept of ecological succession contribute to ecosystem development?

Accepted Answer

Ecological succession is the process by which ecosystems develop and change over time. It involves a series of stages where different species colonize and modify the environment, leading to increased biodiversity and complexity. In the IB DP Biology course, understanding succession helps students appreciate how ecosystems recover from disturbances and the role of pioneer species in initiating ecological recovery.

Question 5

What role do keystone species play in maintaining ecosystem balance?

Accepted Answer

Keystone species have a disproportionately large impact on their ecosystems relative to their abundance. They help maintain the structure and integrity of an ecosystem by controlling populations of other species and promoting biodiversity. The IB DP Biology curriculum highlights the importance of keystone species in preventing ecosystem collapse and ensuring the stability of ecological communities.

Ecology and conservation

Short Notes - Ecology and conservation

Study Notes & Exam Tips

Ecology and conservation — frequently asked questions