Download Sc 8 Unit 2 Topic 1 Notes WD

Topic 2.1: Living Organisms
Living or Not?
Characteristics of Living Things
(Complete the table)
Functions
Structures
Energy
Living organisms need
energy
Environment
Living organisms respond
and adapt to their
environment
Reproduction
Living organisms reproduce
Growth
Living organisms grow
Wastes
Living organisms produce
wastes
Do Find out Activity on p.99
?Functions and Structures?
to complete the table
Functions and Structures
All living organisms have to carry out certain
functions to stay alive.
To carry out these functions,
organisms have different structures.
1. Energy: Animals get their energy from their food. What
structures do different animals have to gather and use food?
Most plants use the energy of the Sun to make their own
food. What structures do plants have to make food?
2. Environment: Plants need light to make food, so they will
bend toward a light source. What structures in plants
enable them to move in this way? Raccoons feed at night,
and deer feed during the day. They both use their eyes to
see under very different conditions. In what ways are their
eyes similar and different?
3. Reproduction: Living organisms reproduce so that life can
continue. A wolf has pups. A watermelon has seeds. Do a
wolf and
a watermelon reproduce in the same way? What
structures enable wolves to reproduce? What plant
structures produce seeds? 4. Growth: A dandelion grows from a seed. What structures
enable a plant to grow? You grew from a baby to your
present size. What structures inside your body enabled you
to grow? Why and how do all living organisms grow to the
sizes they do?
5. Wastes: Animals get rid of waste gases like carbon dioxide.
They also get rid of other wastes through urine and feces.
What structures do they have to perform these functions?
Plants also give off
wastes as gases. What structures help
plants do this?
Levels of Organization in Organisms
- Organisms have systems, which perform the functions
that keep that organism alive
- Systems are made up of organs
- organs are made from
tissue
- Tissues are composed of cells
Examples: page 100
- Figure 2.1A The Human Circulatory System
- Figure 2.1C A Plant? Shoot System
Topic 1 Review p. 102 # 1 - 4