2. (a) Besides venation state two other external characteristics of leaves that can be used to classify plants (2mks)
- shape of the leaf/lamina i.e broad or narrow
- leaf margin i.e serrated/smooth/lobe
- leaf sheath/petiole i.e presence or absence
- leaf apex pointed/absent
(b) Explain why the bat is classified as a mammal yet it flies
- body covered by fur/hair
- the bat is viviparous/ gives birth to young-ones
- Has external ears/pinna
- has sweat glands
3. The diagram below illustrates a specialized cell obtained from a certain tissue
(a) Name the cell
- Nerve cell/ Motor Neurone
(b) State two ways in which the cell is structurally adapted to its function
- has myelin sheath which insulates the axon thus enhances transmission of nerve impulses
- It has numerous dendrites to deliver or transmit nerve impulses
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