![]() This activity will introduce students to some features of organisms and the advantages of possessing such features or behaviours. ![]() Physiological adaptation is an internal body process to regulate and maintain homeostasis for an organism to survive in the environment in which it exists, examples include temperature regulation, release of toxins or poisons, releasing antifreeze proteins to avoid freezing in cold environments and the release of nectar to attract prey.Īctivity 1.1 - Introduction to Adaptations (20 minutes) Structural adaptation is a physical feature of the organism that enhances its survival, for example having spines or thorns to deter predators and possessing large ears to assist with heat loss.īehavioural adaptation is the way in which an organism acts to enhance its survival (National Geographic 2017), an example would be migration, exhibiting a behaviour that make the individual look bigger than it is to warn off predators, to fight for territory, tool use or “huddling to maintain body temperature” (Cotton 2016, p. They have a genetic basis and are passed from generation to generation” (Cotton 2016, p.210) This is an example of an evolutionary process known as natural selection, whereby individuals possessing traits better suited to their environment are more likely to survive and pass these traits on to the next generation (Cotton 2016, p.210).Īdaptations are structural, behavioural and physiological “features that enable organisms to survive and reproduce in different environments. If the mutation is advantageous to the species, the mutation becomes part of the species, and develops into an adaptation (National Geographic 2017). As some mutations are passed from generation to generation, this can allow more individuals in a species to inherit that mutation. The teacher should explain the following information to the students, so students avoid such misconceptions. These adaptations have different purposes in different organisms including defending itself, camouflage from predators, avoiding predator detection, acquiring prey, avoiding poisonous food/prey, minimising water loss, diving into deep water, reducing heat loss, and surviving in harsh environments such as desserts or at the freezing poles of the earth.Ī commonly observed misconception, is that some students think an individual organism will develop an adaptation in response to an environmental stimulus, and not through a mutation that has occurred or been inherited. Teacher UnderstandingĪn adaptation is a genetically controlled structural, behavioural or physiological feature that enhances the survival of an organism in particular environmental conditions (Kinnear & Martin 2015, p.194). ![]() ![]() They will utilise their knowledge of examples to demonstrate their understanding of an adaptation and describe how it enhances the survival of a species. While there aren’t many terms or definitions associated with the adaptations topic in this lesson sequence, students will benefit greatly from understanding diverse examples of species and their adaptations. Students will have the opportunity in their groups to match up species and their adaptations and discuss with each other how and why they enhance the survival of the particular organism. Students will observe and describe some features of organisms shown on the species cards, and the students are to hypothesise what they think these features are used for. The teacher will be required to print out the species cards, so each group has a set. ![]() Throughout the lesson students will focus on how these features enhance an organisms’ survival, something the students may not have considered before. The students will be familiar with some of the features described and explored throughout these videos. Students are introduced to adaptations through two videos, one on Venus Fly Traps and the other on the Blood Squirting Horned Lizard. Understand that adaptations enhance an organism’s survival.Describe what an adaptation is and provide examples in both flora and fauna species.At the completion of this lesson, students should be able to: ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |