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BIOLOGY PRACTICAL ACTIVITIES

BIOLOGY PRACTICAL ACTIVITIES

To examine Bryophyta

A mature moss plant is obtained.

  • The specimen is observed using a hand -lens.
  • A labelled drawing showing structures is made: rhizoids, set a capsule, gametophyte, sporophyte.

To examine Pteridophyta

  • A mature fern plant is obtained.
  • It is observed using a hand lens.
  • Sori can be seen on the lower side of fronds.
  • A labelled drawing showing: frond, pinna, sorus, rhizome and adventitious roots.

To examine Spermatophyta

A mature twig of either cypress or pinus with cones is obtained.

  • Observation of Male and female is made using a hand-lens.
  • The naked seeds are noted.
  • The leaves show xerophytic characteristics e.g. they are rolled, or needle-like.

 

A mature bean plant with pods is obtained,

  • Observation of the leaves, stem and roots is made.
  • Leaves are compound, broad arid have network of veins.
  • The Ieaf-has a leaf stalk.
  • They have a tap root system.
  • Floral parts are in five e.g. 5 petals.
  • A bean seed has two cotyledons.

 

A mature maize plant is obtained.

  • Observation of the leaves, stems and roots is made.
  • Leaves are simple, narrow and long with parallel veins.
  • The petiole is modified to form a leaf sheath.
  • They have a-fibrous root system.
  • Floral parts are in threes.
  • A maize gram has one cotyledon,

 

Examination of Arthropoda

  • Specimens of crayfish, millipede, centipede grasshopper and spider are obtained.
  • Where specimens are not available photographs are used.
  • External features of the specimens are observed.

 

The differences in the following are noted:

  1. Body parts.
  2. Other appendages.

Examination of Chordata

The following specimens are obtained:

  • Tilapia, frog, Lizard, bird and rabbit.
  • Using observable features each specimen is placed into its class.

Features used include:

  1. Body covering.
  2. Type of teeth.

 

See also

FEATURES USED FOR IDENTIFICATION IN PLANTS

CHARACTERISTICS OF VERTEBRATES

KINGDOM PLANTAE

KINGDOM PROTOCTISTA

KINGDOM MONERA

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