Highlight or underline

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Plant Tissues

• Highlight or underline-
• New cells formed in the meristems of a plant are
  similar in appearance and function
• Some must remain meristematic
• Most mature and become other tissues

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Plant Tissues

• Highlight or underline- Tissues may be classified
• I Meristems
• II Permanent
• A Dermal- surface
• B Ground
• Parenchyma
• Collenchyma
• Sclerenchyma
• C Vascular
• Xylem
• Phloem

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Plant Tissues

• Highlight or underline-
• A simple tissue is composed of only one cell
  type.
• Complex tissues contain more than one cell type

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Meristematic Tissue
Highlight or underline- Apical meristems are
located at the tips of stems and roots. The
activity of these meristems results in an
increase in plant length. This is primary
growth The resulting tissues are called primary
tissues
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Meristematic Tissue
Highlight or underline- Lateral meristems are
found near the periphery of stems and roots and
are responsible for increase in diameter. This is
know as secondary growth and secondary tissues
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Questions 4a and b
Guard Cells
Bean shaped
Others?
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Surface Tissues
Observe and answer questions 4 a and b.
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Observe and answer Question 5a and b
Other epidermal cells
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Questions 6 and 7
6. Protects against __?__ loss
7. The guard cells regulate the size of stomata.
As a result they control gas exchange and water
loss
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Question 8
Clue how many kinds of cells are present?
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Figure 2.9 Lower Epidermis
Epidermal
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Periderm or cork
Highlight or underline Periderm replaces the
epidermis on plants with active lateral
meristems. Cork cells fit tightly together and
are dead at maturity.
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Simple Fundamental Tissue
Collenchyma
Highlight or underline- Collenchyma is a simple
tissue with irregularly thickened cell walls
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Collenchyma
Answer Question 9
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Parenchyma
Highlight or underline Parenchyma is the most
common kind of simple tissue. It makes up the
bulk of the herbaceous (non woody) plant body.
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Parenchyma
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Sclerenchyma
Highlight or underline- Sclerenchyma cells have
thick secondary cell walls and are dead at
maturity In contrast to collenchyma has evenly
thickened walls
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Question 11
Sclerenchyma
Very thick walls
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Sclerenchyma
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Sclerenchyma Fibers
Figure 2.11
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Question 12
Sclerenchyma
Parenchyma
Collenchyma
Figure 2.12
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Important Note
Highlight or underline- Parenchyma, collenchyma
and sclerenchyma are basic cell types that often
form simple tissues. Frequent references will be
made of these three tissues. Know their
characteristics and main functions.