Page 98 - General and Inorganic Chemistry for Advanced Secondary Schools Students Book Form Five and Six

Biology for Secondary Schools

(c) They have needle like thorny leaves the leaves, flower arrangement
that can prick and cause injury. and roots of the collected plants
(d) Resins which are produced by pines and state the classes to which each
catch fire easily. Thus, in case of plant belongs.
fire outbreak in a pine forest, fire
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is likely to spread rapidly because Question
of the resins. Summarize the morphological differences
between the classes of the collected

Division Angiospermophyta plants in tabular form, including the
characteristics, such as leaf shape, flower
Activity 5.10: Investigating the arrangement, and root structure
structure of flowering plants
Angiospermophyta is the division in
Materials: Hibiscus flower, common kingdom Plantae which comprises
bean plant, maize plant, elephant grass plants commonly known as flowering
plant, hand lens, notebook, and pen or plants or angiosperms. Angiosperms
pencil are the most diverse and a successful
group of all the plants. They are found
Procedure in most habitats, such as aquatic and
1. Collect hibiscus plant, common bean terrestrial habitat including deserts.
plants, maize plants and elephant They range in size from small plants,
grass plants from the school or home such as herbs and grasses to big trees
environment. Make sure that you like baobab.
carefully uproot the entire plant in
order to display their root system General characteristics of
clearly, except for hibiscus. angiosperms
The following are the general features
Caution of angiosperms.
(a) Get only what is required (a) Angiosperms are found in terrestrial,
instead of destroying the freshwater and marine habitats.
whole plant.
(b) Do not collect dangerous (b) Angiosperms have a well-developed
root system, stem and leaves.
plants, such as thorny plant, (c) Their seeds are enclosed and
itching and poisonous plants.
protected in the ovary.
(c) Be careful of stinging animals, (d) They produce seed bearing fruits.
such as bees, wasps, and spider (e) They have well developed
found on plants.
2. Using a hand lens, observe carefully conducting tissues which contain
xylem and phloem.

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