Gen Bio

Front 1

Meristimatic Tissues

Back 1

hese are composed of embryonic cells that are actively dividing

These tissues are found at the growing tips of the stems and root

Front 2

Apilcal Meristimatiic Cells

Back 2

are primarily responsible for the increase in length and height of the plants

Front 3

Apical Shoot Meristematic

Apical Root Meristematic

Back 3

zone of cell growth at the tip of the stem

zone of cell growth at the tip of the primary root

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Permanent Tissue

Back 4

composed of matures and differentiated cells that perform specialized functions

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Surface Tissue

Back 5

Outer protective covering of the plants

Front 6

Dermal Tissue

Back 6

Protects plants from the excessive loss of water and damage

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Periderm

Back 7

Protective covering of the plants that replace epidermis

Front 8

Fundamental Tissues

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These are composed of only single layer of cells

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Parenchyma cells

Back 9

Large vacuoles, responsible for storing food and water

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Collenchymas cells

Back 10

they are similar to parenchyma, but they are more elongated and their walls are irregularly thickened. Their primary function is to support the young plants

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Sclerenchyma Cells

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they have uniformly thick and rigid cell walls, which structurally support the plants

Front 12

Sclerenchyma Cells

Back 12

they have uniformly thick and rigid cell walls, which structurally support the plants

Front 13

Vascular Tissues

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distributes Water and organic nutrients

Front 14

Xylem

Back 14

Conveys Waters and minerals up from the roots

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Phloem

Back 15

Conveys the product of photosynthesis

Front 16

Leaves

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are organs of plants that conduct the food making process or photosynthesis

Receive the sunlight

Doorway to life

Front 17

Leaves

Back 17

are organs of plants that conduct the food making process or photosynthesis

Receive the sunlight

Doorway to life

Front 18

Photosynthesis

Back 18

is the most remarkable role of the leaf

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Lamina or Lead Blade

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is a flat, thin, green portion of soft tissue of thin-walled cells; that is attached to the petiole

Strengthened by a network of veins

Comes in different shapes

Capture the light energy

Front 20

Veins

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act as the framework of the leaf and as passage tubes for liquids between the midrib and the blade

Conduct nutrients and to support the leaf

Conducts water and mineral salts and food throughout the plant

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Midrib

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is the large vein located at the center of a leaf, extending from the petiole to the tip of the blade

Is the main structure which acts as the backbone of the leaf

Acts as passage tube for liquids between the petiole and veins

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Petiole

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Also called stak

Joins the leaf to stem

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Epidermis

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Waterproof layer

Protects the inner surface

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Cuticle

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Prevent excessive water loss

Is a waxy subtance on the leaf surface

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Upper epidermis

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– is always exposed to the sun

Has thicker cuticle to reduce transpiration from direct sunlight

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Lower Epidermis

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– has thin cuticle

Is the underside of the leaf

Has many stomata

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Lower Epidermis

Back 27

– has thin cuticle

Is the underside of the leaf

Has many stomata

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Stomata or stoma

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greek word for mouth

Are opening or pores through which goes and water vapors pass into and out of the leaf

Found on the underside of the leaf

Region where gas exchange takes place

These are regulated by guard cells

Front 29

Guard Cells

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oval-shaped structure on each side of the stomata

Specialized type of epidermal cell containing chloroplasts

Regulate the opening and closing of the stomata

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Guard Cells

Back 30

oval-shaped structure on each side of the stomata

Specialized type of epidermal cell containing chloroplasts

Regulate the opening and closing of the stomata

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Mesophyll

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came from the greek word meso, which means “middle” and phillo means “leaf”

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Paliside

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are more column like, and lie just under the epidermis

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Spongy cells

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are more loosely packed and lies between the palisade layer and the lower epidermis

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Chloroplast

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are specialized organelles

Trap the energy during photosynthesis

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Chlorophyll

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is the green pigment found in an enzyme-rich chloroplast for the production of the final products in photosynthesis such as glucose, oxygen and water

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Chlorophyll

Back 36

is the green pigment found in an enzyme-rich chloroplast for the production of the final products in photosynthesis such as glucose, oxygen and water

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Photosynthesis

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is the process of the transforming light energy into chemical energy in food

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Transpiration

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is a process wherein water vapor from the external structure of the leaf is removed by evaporation

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Transpiration

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is a process wherein water vapor from the external structure of the leaf is removed by evaporation

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Simple Leaves

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Single Expanded portion

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Compound leaves

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the leaf blade may be subdivided into several separate expanded parts, or leaflets

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Leaf venation

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– is the arrangement of veins in a lea

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Leaf venation

Back 43

– is the arrangement of veins in a lea

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Phyllotaxy

Back 44

is the system of leaf arrangement