In the field
Beating Stick and Net
In the lab
Scanning Electron Microscope
DNA Sequencing homologies
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Introduce the topic: The biodiversity of planet Earth is the total variability of life forms. Currently about 1.9 million species are known, but this is thought to be a significant underestimate of the total number of species. Every year, thousands of new species are discovered. Biologists use characteristics of each newly discovered species to classify organisms having similar characteristics. A classification system is used to assign a single universal name to each organism. Biologists in the field have to use their observation and interpretation skills to make deductions about the organisms they discover. This lets them build up an accurate picture of the role of the organism in its environment, how they interact with their surroundings and what threats they may face now or in the future.
1. Classify the organism you have discovered into one of the five kingdoms listed below:
4. Is it likely to be active at night or during the day?
5. a) Write the taxonomy of the species that you have discovered
b) Its scientific name is ……………………………………………
c) Its common name is …………………………………………….
d) Who proposed a new system of classification?
Construct a dichotomous key device that can be used to easily identify an unknown organism.
Introduction; The word dichotomous comes from two Greek words that together mean, "divided in two parts." A dichotomous key consists of a series of two part statements that describe characteristic of organisms. At each step of a dichotomous key, the user is presented with two choices. As the users make a choice about a particular characteristic of an organism, they are led to a new branch of the key. Eventually the users will be led to the name of the organism that they are trying to identify.
Ask the students to inquire in the website for information about the role of the organism they have identified in the ecosystem.
Possible questions that will help the students inquire about the role of their chosen organism are :
A) a producer
B) a consumer
C) a scavenger
D) a decomposer
A) an organism that produces its own food
B) an organism that does not need food to survive
C) an abiotic organism
D) an organism that cannot produce its own food
A) plants, animals and micro-organisms
B) three types of consumers
C) three types of producers
D) three of British Columbia's 10 eco-provinces
A) a decomposer
B) a parasite
C) a carnivore
D) a scavenger
A) three examples of producers
B) the three main types of symbiotic relationships
C) the three main types of ecological relationships
D) three examples of abiotic interactions
Genetics as well as simple observations are used in classification today. Visit a genetic institute to investigate how DNA analysis can provide evidence in a taxonomic study.
Introduction: In modern biology, it is not considered satisfactory to consider adaptations, evolution, speciation and physiology as autonomous topics, but an appreciation of other disciplines, such as biochemistry, is essential. The study of molecular evolution by comparing protein and gene sequences can integrate biology with chemistry and Physics.
Discuss the theory of evolution based on DNA homologies