Download Plant Structure - Ms Curran`s Leaving Certificate Biology

Plant Structure
Higher Level Objectives
At the end of this sub-section students should be able to:
1. Label a diagram of the external parts of a typical flowering plant
shoot, root, stem, leaves, flower, fruit & seed
2
State the function of the root and shoot
3. Identify tap and fibrous root systems
4. Explain the term Meristem and give its location in the stem and root
5. Name and give the function of four zones in a longitudinal section of a root
6. State the function of Vascular Tissue
7
Give the location of three tissue types, Dermal, Ground and Vascular, in transverse sections of
the of the root and stem and leaf
8. Give the location of three tissue types, Dermal, Ground and Vascular, in longitudinal sections of
the root and stem.
9. Identify and draw the structure of Xylem and Phloem and state their function
10. Distinguish between Xylem Vessels and Xylem tracheids, and between Phloem Sieve Tube
Cells and Companion Cells
11. Identify Monocots and Dicots under the headings
Number of flower parts
Vein pattern in leaf
Arrangement of Vascular Bundles
Number of Cotyledons in the seed
Woody or Herbaceous
Practical Activity
1)Prepare and examine a transverse section of a Dicot stem under the microscope
Gas Exchange
Higher Level Objectives
At the end of this sub section students should be able to:
1.
Explain diffusion
2.
Explain how gases are exchanged by diffusion between cells and their environment
3.
Understand that the efficiency of exchange is proportional to the surface area over which
diffusion can take place.
4.
Say why plant leaves are flattened
5.
Draw the structure of the leaf in relation to gaseous exchange
6.
Identify the stomata in a leaf in transverse section and lower surface
7.
Identify lenticels on a stem
8.
Give the role of lenticels as excretory organs of plants
9.
Give the role of leaves as excretory organs of plants
10. Identify the transverse section of a leaf blade under the microscope
11. See the need for intercellular air spaces allowing free diffusion of carbon dioxide and oxygen in
the leaf
Practical Activity
1) Examine microscopically a T.S. of a leaf blade. Note the intercellular air spaces allowing free
diffusion of carbon dioxide and oxygen.
2) Examine stomata distribution on a leaf blade.
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Plant Structure
Label a diagram of the external parts of a typical flowering plant
Shoot, root, stem, leaves, flower, fruit & seed
State the function of the root and shoot
Identify tap and fibrous root systems
Explain the term Meristem and give its location in the stem and root
Name and give the function of four zones in a longitudinal section of a root
State the function of Vascular Tissue
Give the location of three tissue types, Dermal, Ground and Vascular, in
transverse sections of the of the root and stem and leaf
Give the location of three tissue types, Dermal, Ground and Vascular, in
longitudinal sections of the root and stem.
Identify and draw the structure of Xylem and Phloem and state their function
Distinguish between Xylem Vessels and Xylem tracheids, and between Phloem
Sieve Tube Cells and Companion Cells
Identify Monocots and Dicots under the headings
Number of flower parts
Vein pattern in leaf
Arrangement of Vascular Bundles
Number of Cotyledons in the seed
Woody or Herbaceous
Explain how to prepare and examine a transverse section of a Dicot stem under
the microscope
Gas Exchange
Explain diffusion
Explain how gases are exchanged by diffusion between cells and their
environment
Understand that the efficiency of exchange is proportional to the surface area
over which diffusion can take place.
Say why plant leaves are flattened
Draw the structure of the leaf in relation to gaseous exchange
Identify the stomata in a leaf in transverse section and lower surface
Identify lenticels on a stem
Give the role of lenticels as excretory organs of plants
Give the role of leaves as excretory organs of plants
Identify the transverse section of a leaf blade under the microscope
See the need for intercellular air spaces allowing free diffusion of carbon
dioxide and oxygen in the leaf
Examine microscopically a T.S. of a leaf blade.
Page 2 of 2
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