Download 2.1 Living Organisms.cwk (WP)

Topic 2.1
Living Organisms
Living or Not???
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?s Shoot System
Topic 1 Review p. 102 # 1 - 4