Page 49 - General and Inorganic Chemistry for Advanced Secondary Schools Students Book Form Five and Six

Biology for Secondary Schools

Table: Differences between plant and animal cells
Plant cell Animal cell
1. Has a cell wall 1. Has no cell wall
2. Has chloroplast 2. Lacks chloroplast
3. Has a large and permanent centred 3. Has small and temporary vacuoles
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vacuole
4. It is regular in shape 4. It is irregular in shape
5. Nucleus is located at the periphery 5. Nucleus is centrally positioned
6. Stores food in the form of starch 6. Stores food in the form of glycogen

Exercise Amoeba sp., Paramecium sp., and
1. What are the differences between bacteria. In such organisms, only one
prokaryotic and eukaryotic cells? cell carries out all the life processes,
2. Mention the structures that are such as respiration, reproduction, and
found in plant but not in animal excretion.
cells. Organisms made up of more than
3. Draw a diagram of an animal cell one cell are called multicellular
and label the parts which perform
the following functions. organisms. A multicellular organism
(a) Energy production consists of a few to millions of cells.
(b) Control all the functions of the These cells have different functions
cell and have features that make them better

(c) Suspended organelles suited to carry out these functions.
(d) Allow passage of some substances This is called cell differentiation.
Cell differentiation is the process in
Cell differentiation which a cell changes from one form to
another and becomes more specialised
Task 3.6 to perform specific functions.
Search from the library and reliable

internet sources the information about A group of cells that perform the same
cell differentiation, then write short function form a tissue. Examples of
notes. animal tissues are bone, muscle, and
blood. Examples of plant tissues are
An organism that is made up of one xylem and phloem. Figure 3.7 shows
cell is called a unicellular organism. some examples of animal tissues.

Examples of such organisms are

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