Chapter 7 Flashcards
What is a microorganism?
A microorganism is a living organism that is so small that you can only see it clearly by using a microscope.
How many cells are microorganisms made of?
only one cell, they are single-celled
What are examples of fungi that are not microorganisms?
mushroom and toadstools
There are several different kinds of microorganism. They include:
bacteria,microscopic fungi,protozoa and algae
A collection of cells are called___
a colony
Scientists can let microorganisms grow in a ___
Petri Dish
What type of special jelly do PEtri dish contain?
agar jelly
What are requirements for the dish and the jelly to make a collection of many cells
The dish and the jelly have to be sterile.
What does the Petri Dish and Agar Jelly being sterile mean?
This means that any living organisms on them have to be killed.
What are microorganisms that can be found in pond water
tiny plant-like organisms called algae or animal-like organisms called protozoa.
What is the study of organisms in their environment called?
ecology
Explain what is ecology
All the different organisms that live together affect one another in some way. One may eat another while one provide shelter for another
How are plants producers in food chains?
Plants use energy from the Sun to produce food.
The first organism in a food chain is a _____
producer
What are the role of consumers in a food chain?
They consume plants or other animals
Consumers that only consume plants are called____
herbivores
Consumers that consume other animals are called______
carnivore
All other organisms in a food chain other than plants are consumers.
True or False?
True
Animals that catch, kill and eat other animals are called what?
Predators
The animals predators eat are called___
prey
Draw a food web that involves grass, acacia, springbok,zebra,termite,hyena,leopard,cheetah and aardvark
pg 241
What can mould do to food or fruits such as apple
They can change the apple and make it decay
Write down a food chain that involves grass, termite, leopard and aardvark
grass–> termite–> aardvark–>leopard
Organisms that make things decay are called______
decomposers
What are examples of microorganisms that are decomposers
some kinds of bacteria and microscopic fungi
Any substance that has been made by a living organism is called____
organic matter
are apples organic matter?
yes
