Download Functions and Structures

Topic 2.1: Living Organisms
Living or Not?
Characteristics of Living Things
(Complete the table)
Functions
-
-
Animals get their energy
from their food.
- Plants get their energy
from the Sun
Hunting patterns –
raccoons are nocturnal,
deer feed during the day
Plants bend toward Sun
Migration
Structures
Energy
Living organisms need energy
-
Environment
Living organisms respond and
adapt to their environment
- Plants and animals reproduce in
different ways
Reproduction
Living organisms reproduce
- Plants and animals grow in
different ways and at different
rates
Growth
Living organisms grow
- Plants and animals have different
methods of releasing wastes
(Carbon dioxide, oxygen, urine,
feces)
Animals have teeth, body
systems, claws, nocturnal,
good sense of smell
Plants have chloroplasts to
carry out photosynthesis
- Eye structures
Plants have sturdy cell walls
and stems that are flexible
- Fur coats (shed)
-
Plants and animals have different
structures for reproduction
-
What structures enable
plants and animals to
grow?
- Mitosis (cell division)
- Plant growth – division of
cells.
-
Wastes
Living organisms produce wastes
-
Animals have a respiratory
system and a digestive
system that help them
release waste products.
Plants use photosynthesis
to do this.
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
Cells Tissues


- Figure 2.1A The Human Circulatory System
-
Figure 2.1C A Plant? Shoot System
Topic 1 Review p. 102 #1-4
