Station 14

1
Station 14
Reporting Category 4 Biological Processes and
Systems

• Interaction Among Plant Systems

2
Essential Question Bell Ringer

• In order for a plant to survive, why must its
  different systems interact?

Plant systems must interact because each
individual system is specialized and cannot
function on its own. Each system depends on the
function of other systems to be able to carry out
its own functions
3
Pre-Review Question

• Which type of tropism is this? 
• Hormones called auxins are sent to the shady
  side of the plant to cause the stem to bend
  toward light.
• A. Thigmotropism
• B. Photostropism
• C. Geotropism

4
Pre-Review Question

• In plants, what part of the vascular system is
  responsible for sending food to the root system
  for winter storage? 
• A. Xylem
• B. Spongy Mesophyll
• C. Phloem
• D. Stomata

5
Pre-Review Question

• In Plants, what is the path for water during
  transpiration? 
• A. Stomata, Leaves, Xylem, Roots
• B. Leaves, Stomata, Cambium, Roots
• C. Roots, Cambium, Phloem, Stomata
• D. Roots, Xylem, Leaves, Stomata

6
Pre-Review Question

• When a plant has enough water on a hot day, what
  happens to the guard cells? 
• A. They swell in order to open the stomata
• B. They swell in order to close the stomata
• C. They shrink in order to close the stomata
• D. They swell in order to open the stomata

7
Discuss with your partner
How is it beneficial for a plant to respond to
different stimuli in its environment? A plants
response system allows it to use the different
stimuli in the environment to its advantage. For
example, when a plant responds to the sun by
growing toward it, the plant is optimizing
photosynthesis and the benefits of light energy.
A plants roots response to gravity enable them
to grow in the direction of water and minerals.
8
Discuss with your partner
How do the transport system parts identified in
the System Parts Interactions card interact in
the leaves, stems, and roots of a plant to
benefit the plant? The transport system is
composed of two types of tissues xylem and
phloem. The xylem transports water and minerals
from the roots, through the stems, and to the
leaves. These are some of the raw materials
necessary for photosynthesis and other important
processes in a plant. Once food (i.e., sugar) has
been produced via photosynthesis, it is
distributed via the phloem to all parts of the
plant to be converted into energy so that the
plant can carry out its other functions.
9
In your journal, explain the effects of...

• Thigmotropism on a plants tendrils
• Growth in response to touch or physical contact)
  allows the tendrils to grasp onto objects so that
  the plant can grow and be supported by the
  object. This often enables plants to grow in ways
  that allow them to compete with other plants for
  available sunlight.

10
In your journal, explain the effects of...

• Phototropism on the stems and leaves of a plant
• Phototropism (growth in the direction of a light
  source) places the plants stems and leaves in a
  more optimum position to receive sunlight for
  photosynthesis.

11
In your journal, explain the effects of...

• Geotropism on the roots and leaves of a plant
• Geotropism (growth in response to gravity) helps
  control the direction that roots grow. As roots
  grow down into the soil, they are more apt to
  reach moisture and minerals in the soil.

12
I need to remember..

• Plants, like animals, are composed of
  different
• systems that interact to benefit the plant.
• Some systems enable the plant to respond to
  stimuli it receives from its environment, such as
  touch, light, and gravity.
• One system cannot survive without interacting and
  depending on other systems in the plant.
• Each system is composed of smaller systems for
  example, the transport system is composed of
  xylem and phloem found in the leaves, stems, and
  roots of plants.
• The reproductive system reproduces either by
  sexual or asexual means, depending on the plant.

13
Post-Review Question

• A. Thigmotropism
• B. Photostropism
• C. Geotropism

14
Post-Review Question

• A. Thigmotropism
• B. Photostropism
• C. Geotropism

15
Post-Review Question

• A. Thigmotropism
• B. Photostropism
• C. Geotropism

16
Post-Review Question

• A. Thigmotropism
• B. Photostropism
• C. Geotropism