PLANT CELL STRUCTURE

Picture
Copyright to Dustin Tanek Jameson

Objectives

  • Learn the differences the parts of a plant 
  • Identify processes that take place in specific organelles
  • Comprehend the importance of chloroplasts in a plant
  • Learn to do a lab experiment
  • Learn to write a lab report and follow instructions

materials

  • Computers with Microsoft Office 
  • Blackboard
  • Lab Material (see below)

plant cell structure

A plant cell contains a polysaccharide cell wall, a central vacuole and chloroplasts, which distinguishes them from animal cells.  Plant cells also contain mitochondria, a nucleus, Golgi apparatus, endoreticulum membranes, plasma membranes.  On plasma membrane and cell wall, there are channels called plasmodesmata connecting neighboring cells for cell-cell communication. Plants are also made of tissues like animals do.

There are three basic types of plant tissues, vascular tissues, ground tissue and dermal tissues.  Vascular tissues include xylems and phloems, which are responsible for water, solute and organic chemical transportation. Ground tissues include tissue surrounding the vascular tissue. Its main function is for photosynthesis and storage.  Dermal tissues cover the surface of a plant.  Different tissue types include different types of cells.
 

Powerpoint on plant cell structure (25 minutes)

Plant Cell Structure.ppsx
File Size: 654 kb
File Type: ppsx
Download File

LAB: Investigation of leaf stomata
(35 minutes)

Materials needed

  • Different types of leaves
  • Microscope
  • Microscope slide
  • Nail Polish
  • Clear tape

Procedure

1. Obtain a plant leaf
2. Paint a thick patch of clear nail polish on the leaf surface
3. Make a patch at least one square centimeter.
4. Allow the nail polish to dry completely. 
5. Tape a piece of clear tape to the dried nail polish patch 
6. Gently peel the nail polish patch from the leaf by pulling on a corner of the tape and "peeling" the fingernail polish off the leaf. 
7. This is the leaf impression you will examine. 
6. Tape your peeled impression to a very clean microscope slide
7. Use scissors to trim away any excess tape.
8. Observe under the microscope and draw what you see 
9. Label all the parts you see in the plant tissue

Lab report (to be completed at home)

Write a brief description (200- 250 words) of what you observed under the microscope. Why were some parts more visible than others? Why were some parts not visible? How many chloroplasts can you count in your leaf. What does that signify?