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biology notes

SS3 Biology Second Term: Heredity (Genetics)

Introduction All living organisms reproduce. Reproduction results in the formation of offspring of the same kind. A pea plant produces only pea plants each time it reproduces. A rat produces only rats. Humans produce only humans. However, the resulting offspring need not and most often do not totally resemble the parent. Several characteristic differences may [...]

Classwork Series and Exercises {Biology – SS1}: Biomes

Biology, SS 1 Topic: Biomes Introduction Large biotic communities corresponding to vegetation belts or zones are called biomes. Biomes are described as any large natural terrestrial ecosystem. The type of any biome is largely determined by climatic factors, especially rainfall and temperature. Thus, regions of the world with similar climates have similar biomes. The local [...]

Classwork Series and Exercises {Biology – SS1}: Pest Of Agricultural Importance

Biology, SS 1 Week: 3 Topic: Pests of Agricultural Importance Introduction A pest is an organism with characteristics that people see as damaging or unwanted, as it harms agriculture through feeding on crops or parasitizing livestock. An animal can also be a pest when it causes damage to a wild ecosystem or carries germs. The [...]

Classwork Series and Exercises {Biology – SS3}: Sense Organs

Biology, SS 3 Week: 8 Topic: Sense Organs Introduction A sense organ is defined as a group of specialized cells, tissues or receptors which are able to receive, perceive or detect stimulus and transmit the information, impulse or message to the central nervous system. There are five sense organs in human body. These sense organs [...]

Classwork Series and Exercises – {Biology – SS1}: Common Diseases

Biology SS 1 Week 6 Topic: Common Diseases Malaria Malaria is a mosquito-borne disease caused by a parasite. Malaria is caused by a parasite called Plasmodium, which is transmitted via the bites of infected mosquitoes (Anopheles mosquito). In the human body, the parasites multiply in the liver, and then infect red blood cells If malaria is [...]

Classwork Series and Exercises {Biology – SS2}: Aquatic Habitat

Biology SS 2 Week 3 Topic: Aquatic Habitat Introduction Aquatic habitat is a body of water in which certain organisms live naturally. In other words, aquatic habitats are habitats or places that relates to lives in water. Organisms that live in water are called aquatic organisms. Examples of aquatic organisms are fish, crabs, toads, plants [...]

Classwork Series and Exercises {Biology – SS1}: Conservation Of Natural Resources

Week 2 Topic: Conservation of Natural Resources Introduction Conservation is the planning and management of natural resources in order to secure their wise use and continuity of supply while maintaining and enhancing their quality, value and diversity. In other words, conservation is defined as the planned or controlled exploitation or judicious use of natural resources [...]

Classwork Series and Exercises {Biology – SS3}: Nervous Coordination

Biology SS3 Week 5 Topic: Nervous Co-ordination Introduction The behavior of an animal in its environment to maintain itself depends on the coordination of its organ systems. Without co-ordination of various organ systems, various physiological processes would work in a haphazard way, without linking together activities. The linking together in time and space of various [...]