Page 52 - General and Inorganic Chemistry for Advanced Secondary Schools Students Book Form Five and Six

Biology for Secondary Schools

Tail Middle piece Head

Cell membrane

Cytoplasm
FOR ONLINE READING ONLY

Nucleus

Figure 3.12: Structure of a sperm cell

Specialised plant cells
The following are examples of specialised plant cells:

Root hair cells
Root hair cells absorb water and mineral salts. They help to increase the surface
area for absorption. Figure 3.13 shows the structure of a root hair cell.

Nucleus Cell wall
Cell membrane

Cell vacuole

Root hair
Cytoplasm

Figure 3.13: Structure of root hair cell

Activity 3.4: Observing root hair is intact and has visible root hairs.

structure in plants 2. Gently rinse the root under running
water to remove any soil particles.
Materials: Fresh root sample, microscope, 3. Take a microscope slide and
microscope slide, coverslip, water, dropper place a small drop of water on it.

or pipette, and stain (optional), notebook, 4. Carefully, place the root sample
and pen or pencil on the water droplet, ensuring the
Procedure: root hairs are facing down.
1. Obtain a fresh root sample from 5. When using a stain, add a drop or

a young plant. Make sure the root two of the stain to the water on

46 Student’s Book Form One Student’s Book Form One

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