Activities
Modes of nutrition (2025)
"Ecology is the study of the distribution and abundance of organisms, the interaction between organisms, the interaction between organisms and their environment, and structure and function of ecosystems."...
Activities
Plant adaptations (2025)
This set of activities covers all the adaptations which plants use to get light in tropical forests. Epiphytes, lianas, canopy trees and even strangler figs are describes. Three activities give students...
Activities
Animal adaptations (2025)
These activities cover the adaptations of Hominid dentition to suit their diets, the adaptations of insect mouthparts and the protective features of plants to stop herbivores as well as some of the structural,...
Activities
Fundamental and realised niches (2025)
The "Niche concept" has many slight variations. This activity introduces the niche concept and the difference between realized and fundamental niches using Paramecium. There is a second activity with...
eBook
B4.2 Ecological niches - student friendly summary
Blue text shows extra clarification or guidance. Guiding questions SL & HL (4 hours) B4.2.1 - Ecological niche is the role of a species in an ecosystem. It includes the biotic and abiotic interactions...
Activities
Modes of nutrition - model answers
The document below shows some suggestions for answers to the activity IB style questions on modes of nutrition on the page 1 Modes of nutrition (2025) These are only intended as a guide fo help students...
Activities
Diabetes IB style question - model answer
This is a suggested model answer for the question on diabetes. Distinguish between type I and type II diabetes with respect to their cause, effects and treatment. (3 marks) Model answer Distinguish between...
Activities
Phytohormones (2025)
Phytohormones are signalling chemicals that control growth and development in plants. Auxin is one, and the mechanism by which it acts is quite complex, but it is a good illustration of the role of membrane...
Activities
Tropisms (2025)
How do plants respond to light if they don't have eyes nor a brain? There are two activities in this lesson, the first explores the process of phototropism and the benefits to the plant of this mechanism....
Activities
The endocrine system (2025)
The endocrine system is made up of glands, without ducts, that release hormones that act to regulate the body's growth, metabolism, sexual development and function. In this series of activities the role...