Types Of Plant Tissues

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2 Main types of Plant tissue

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1. meristematic

2. permanent

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Meristematic tissue are thin-walled, with densely stained ____ and large ____, lacks a ____

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cytoplasm

nucleus

central vacuole

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Meristematic tissue function is it produces new cells by ____ thereby giving rise to the plant body

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mitosis

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these are actively dividing cells

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meristem

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it is consists of undifferentiated cells that are found at shoot tips, root tips, vascular and cork cambium

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meristem

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3 Types of Meristematic tissue

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1. apical

2. intercalary

3. lateral

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meristematic cells produces cells that differentiate into 3 specialized tissue systems namely

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1. dermal

2. ground

3. vascular

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these are found at the apex of stems, roots, and shoots

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apical

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Apical is responsible for

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primary growth

i.e. plant length

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____ is found at the basal portion of internodes and is responsible for the ____ of internodes

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intercalary

elongation

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it is responsible for secondary growth

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lateral

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Lateral is found at the ____ and ____ cambium

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vascular

cork

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2 Meristematic tissues found near the periphery of the roots and stems

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1. vascular cambium

2. cork cambium

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it occurs between xylem and phloem and is responsible for the production of additional connective tissue

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vaacular cambium

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Phellogen develops within the ____ to form a protective layer of ____

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outer tissues

cork

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it develops within the outer tissues to form a protective layer of cork

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cork cambium/phellogen

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2 Classification of Permanent Type of Plant Tissue

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1. simple permanent tissue

2. complex tissue

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tissues that contain cells of similar structure, function, and have common origin

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simple permanent tissue

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"permanent" because most of the cells have matured into ____ and ____

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specific

irreversible forms

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____ because it consist of a single basic tissue type, or similar kind of cell

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simple

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it is the fundamental tissue found in every part of the plant body

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parenchyma

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____ is involved in storage of many mineral substances

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parenchyma

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in parenchyma, there is active ____ and ____ synthesis

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respiration

protein

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these are IC spaces between cells filled with air

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aerenchyma

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it provides strength to aquatic plants

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aerenchyma

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it allows aquatic plants to float

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buoyancy

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these are parenchyma cells that contains chloroplast

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chlorenchyma

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2 shape of the cell

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1. pallisade

2. spongy

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Pallisade are ____ and ____ arranged

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elongated

compactly

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Spongy are ____ and ____ arranged

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spaciously

irregularly

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Collenchyma cell walls are thickened due to deposition of ____ and it is ____ than parenchyma

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pectin

narrower

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it provides elastic support to stems and leaves

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collenchyma

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it is the primary supporting tissue in stems, leaves, and floral parts of dicots

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collenchyma

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these are matured tissues and more rigid

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sclerenchyma

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____ functions for the mechanical support due to thick lignified secondary walls which contain large amounts of ____ and ____

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sclerenchyma

cellulose

lignin

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these are usually long and spindle shaped with pits

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fibers

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it is shorter than fibers that occur singly or in groups

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sclereids

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4 known types of sclereids

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1. osteosclereids

2. macrosclereids

3. asterosclereids

4. brachysclereids

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cells that are grouped here have different origin but performs a common function

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complex permanent tissue

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2 classification of complex permanent tissue

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1. xylem

2. phloem

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6 types of cells that make up xylem tissue

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1. tracheary elements

2. tracheids

3. vessel elements(conducts water and nutrients)

4. fiber(provides support)

5. living parenchyma cells

6. sclereids

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these are cells of the xylem tissue, tracheids, are elongated and have bordered wall pits for water conduction

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vascular cells

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water and mineral conducting cells of the xylem called ____, have bordered pits in their cell walls

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vessel elements

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the ____ passes vertically through the vessel elements via ____ that may be parallel slits or a single large opening

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xylem sap

end perforations

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the primary walls of tracheids and vessel elements

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bordered pits

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the bordered pits of tracheids and vessel elements have depressions called ___ ___ ____

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primary pit fields

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when the secondary walls are formed, the bordered holes known as ____ ____ consist of a pit ____ and a pit ____

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pit apertures

chamber

membrane

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it is composed of sieve tube elements, fibers, and parenchyma cells

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phloem

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laticifers and sclereids may also be present in ____

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phloem

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found in the phloem of conifers and primitive vascular plants such as ferns

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sieve cells

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found in more advanced flowering plants

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sieve tube elements

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these are long end to end columns formed by sieve cells and sieve tube elements

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sieve tubes

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it consists of primary pit fields that occur in the end walls of sieve tube elements

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sieve plates

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these are specialized type of parenchyma that may be present in varying numbers in association with sieve tube elements

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companion cells

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tissues that occur in different parts of the plant but still have a common function which is to secrete substances

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secretory structures

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large cells containing a wide variety of substances such as oils, tannins, resins, and mucilages

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secretory cells

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these are hairs which secrete fragrant volatile oils

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glandular hairs/trichomes

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they secrete nectars

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nectaries

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it is a sugary substance that attracts some animals

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nectars

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tissues that secrete water

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hydathodes

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Hydathodes are tissues that secretes water via a process called ____(occurs through a ____ ____ that are always open)

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guttation

modified stomata

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they develop either by separation between cells or by degeneration of a pocket of cells to produce the space

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secretory canals and cavities