Lesson Notes By Weeks and Term - Senior Secondary 1

TERM – 1^ST TERM

WEEK THREE

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:

Subject: Biology

Topic: Classification of living things 2

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

1. Discuss the kingdom plantae
2. Discuss the kingdom animalia

iii. Explain why viruses are not considered living organisms.

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

NOTE

CLASSIFICATION OF LIVING THINGS 2

Kingdom plantae

The Kingdom Plantae includes diverse organisms like mosses, ferns, gymnosperms, and angiosperms. They share characteristics such as multicellularity, cell walls containing cellulose, and the ability to photosynthesize.

The Kingdom Plantae is classified into various divisions as follows;

1. Bryophyta: Mosses, non-vascular plants with simple structures.

2. Hepatophyta: Liverworts, another group of non-vascular plants.

3. Anthocerotophyta: Hornworts, small, non-vascular plants with a horn-shaped sporophyte.

4. Lycophyta: Club mosses, primitive vascular plants.

5. Pteridophyta: Ferns, vascular plants with spore reproduction.

6. Gymnosperms: Conifers and cycads, seed-producing plants with "naked" seeds (not enclosed in a fruit).

Structure of conifers

7. Angiosperms: Flowering plants, the most diverse group, with seeds enclosed in fruits.

Kingdom animalia

The Kingdom Animalia encompasses a diverse group of multicellular, eukaryotic organisms. Animals are characterized by heterotrophy (they obtain nutrients by consuming other organisms), multicellularity, and the absence of cell walls. The Kingdom Animalia is classified into several major phyla based on key characteristics. Here's a simplified overview:

1. Porifera (Sponges): Simple, aquatic animals with porous bodies.

Sponge

2. Cnidaria (Jellyfish, Corals, Anemones): Radially symmetrical animals with tentacles and specialized stinging cells.
3. Platyhelminthes (Flatworms): Flat, unsegmented worms with simple organ systems.
4. Nematoda (Roundworms): Unsegmented worms with cylindrical bodies and a complete digestive system.
5. Mollusca (Snails, Clams, Octopuses): Soft-bodied animals often with a hard shell, and a muscular foot.

Octopus

6. Annelida (Segmented Worms): Body divided into repeated segments, like earthworms.

Earthworm

7. Arthropoda (Insects, Arachnids, Crustaceans): Segmented bodies with exoskeletons and jointed appendages.
8. Echinodermata (Starfish, Sea Urchins):nMarine animals with spiny skins and a unique water vascular system.

      9. Chordata (Vertebrates and a few Invertebrates): Animals with a notochord, which includes vertebrates (subphylum Vertebrata).

Viruses as ultra microscopic organisms

Viruses are not considered organisms, and they are not classified within any of the traditional biological kingdoms. They are acellular entities, meaning they lack cellular structure. Viruses consist of genetic material (either DNA or RNA) surrounded by a protein coat called a capsid. Some viruses also have an outer envelope derived from the host cell membrane.

While viruses are indeed microscopic, they are not classified as organisms because they lack the essential characteristics of living cells, such as metabolism and the ability to carry out independent life processes. Instead, viruses are obligate intracellular parasites that require a host cell to replicate and carry out their life cycle.

EVALUATION: 1. identify the classes of kingdom plantae with relevant examples

2. Identify the classes of kingdom Animalia with relevant examples.

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively