plant cells structure and functions of oraganelles

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  • Created by: caprice
  • Created on: 01-03-14 11:33
Plant Cell Wall
the plant cell wall gives plants their strength and support. it is made up largelt of cellulose.groups of cellulose form microfibrils.
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Plasomdesmata
Plasmodesmata are produced as as the cell divides - the two cells dont completely seperate - and threads of cytoplasm remain between them.they traverse the cell walls of plant cells. This enable transport and communication between them.
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Amyloplast
They develop from leucoplast, they are colourless and are used to store amylopectin ,a form of starch.this can then be converted into glucose and used to provide energy to the cell. Amyloplast are found in large numbers where the pant stored starch.
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Vacuole
a large, membrane-bound space within a plant cell that is filled with fluid - cell sap-. It helps maintain the shape of the cell by keeping it turgid through osmosis. it is surrounded by a membrane called tonoplast
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Chloroplast
an elongated or disc-shaped organelle containing chlorophyll. Photosynthesis takes place here
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Epidermis (Stem)
the outer layer of the stem is the epidermis, it play no role in support but protect the cells beneath it. these cells secrete cutin. they may also form hairs to trap moist air.
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Parenchymana (Stem)
these are unspecialied cells , but can be modified.e.g. to make them suitable for storage or photosynthesis.
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Collenchyma (Stem)
have thick primary cell walls which are even thicker at the corners. this gives the tissue its strength. these cells are found around the outside of the stem.
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Sclerenchyma ( Stem)
found around the vascular bundles in older stems and leaves. have strong secondary cell walls made of cellulose microfibrils. lignin is deposited on the cell wall theses fibers making it strong yet flexible
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Xylem (Stem)
tissue carreis water and dissolved minerals from the roots to the photosynthetic parts of the plant . the movement is always upwards. and is made up of several different types of cells (most dead)
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Phloem (Stem)
is living tissue made of phloem cells which transport the dissolved product of photosynethesis (surcose)) from the leaves to where it is needed for the growth or storage as starch. flow can go both up and down the pant
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Cambium (Stem)
is a layer of unspecialied cells which divide, giving rise to more specialized cells that form both the xylem and phloem
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ATP
ATP is short for adenosine triphosphate; it is a high-energy molecule used for energy storage by organisms. In plant cells, ATP is produced in the cristae of mitochondria and chloroplasts.
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Photosynthesis
a process in which plants convert sunlight, water, and carbon dioxide into food energy (sugars and starches), oxygen and water. Chlorophyll or closely-related pigments (substances that color the plant) are essential to the photosynthetic process
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Stroma
part of the chloroplasts in plant cells, located within the inner membrane of chloroplasts, between the grana.
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Other cards in this set

Card 2

Front

Plasmodesmata are produced as as the cell divides - the two cells dont completely seperate - and threads of cytoplasm remain between them.they traverse the cell walls of plant cells. This enable transport and communication between them.

Back

Plasomdesmata

Card 3

Front

They develop from leucoplast, they are colourless and are used to store amylopectin ,a form of starch.this can then be converted into glucose and used to provide energy to the cell. Amyloplast are found in large numbers where the pant stored starch.

Back

Preview of the back of card 3

Card 4

Front

a large, membrane-bound space within a plant cell that is filled with fluid - cell sap-. It helps maintain the shape of the cell by keeping it turgid through osmosis. it is surrounded by a membrane called tonoplast

Back

Preview of the back of card 4

Card 5

Front

an elongated or disc-shaped organelle containing chlorophyll. Photosynthesis takes place here

Back

Preview of the back of card 5
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