Test: evolution, characteristics of life, taxonomy, population, habitat, niche, etc
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What are the 7 characteristics of living organisms?
Made of cells Respond to stimuli (sense and react to environment) Exchange with environment Grow and develop Require energy Reproduce Adapt
What does it mean that all living things are made of cells?
Every living organism is composed of one or more cells, which are the basic units of life.
What is a stimulus?
A change in the environment that an organism can sense and respond to.
What does “exchange with environment” mean?
Living organisms constantly interact with their surroundings by taking in nutrients and releasing waste.
What does growth and development mean?
Living organisms increase in size and undergo changes over time.
Why do living things need energy?
to perform activities such as movement, growth, and reproduction.
What does reproduction mean?
The ability of organisms to produce offspring (more of their kind).
What does adaptation mean (characteristic of life)?
The ability of organisms to adjust to their environment over time.
What is a species?
A group of organisms that: Have similar characteristics Can reproduce together Produce offspring that can reproduce
Why can a mule not reproduce?
Because it is produced from two different species (horse + donkey), so it is sterile.
What is binomial nomenclature?
A system used to name species using two Latin words.
What are the two parts of a scientific name?
Genus (first word) Species (second word)
What is a genus?
A group of closely related species (e.g., dogs and wolves are in Canis).
What is taxonomy?
The classification of living organisms into distinct groups.
What are the 5 kingdoms?
Animals Plants Fungi Monera (bacteria) Protists
Example: If an animal has feathers, what is it?
a bird
Example: If an animal has fur, what is it?
A mammal.
What is a population?
A group of individuals of the same species living in the same area.
What is population size?
The number of individuals in a population.
Why do scientists study population size?
Decrease → risk of extinction Increase → possible imbalance in ecosystem
What is a habitat?
The place where a species lives.
What are the characteristics of a habitat? there are 6
Climate Location Fauna (animals) Flora (plants) Water presence Human interaction
Example: Describe a Quebec forest habitat.
Climate: cold, rainy, warm summers Fauna: squirrels, rabbits Flora: pine, maple Water: present Human interaction: yes
What is an ecological niche?
The role of a species in its environment, including all interactions with living and nonliving factors.