Lesson Notes, Audio Lessons, Exam Questions
Lesson Notes, Audio Lessons, Exam Questions
See our comprehensive SS 3 Biology notes for the 1st, 2nd, and 3rd terms, designed to match the WAEC and NECO syllabus.
These well-organized notes cover all essential topics and provide a solid foundation for exam success. Ideal for students revising key concepts or teachers seeking reference materials. Perfect for self-study and exam preparation.
Access SS 3 Biology notes for 1st, 2nd, and 3rd terms, aligned with WAEC & NECO syllabus. Perfect for revision and exam preparation.
DEVELOPMENT OF ZYGOTE IN FLOWERING PLANTS, GERMINATION OF SEEDS, ADAPTIVE FEATURES IN A DEVELOPING ANIMAL DEVELOPMENT OF ZYGOTE IN PLANTS Pollination is followed by fertilization and the development of zygote in flowering plants during which the flower changes into a…
COURTSHIP BEHAVIOURS IN ANIMALS Courtship is a reproductive communication between males and females of a species that ends in sexual union. Courtship behaviours in animals include STAGES IN DEVELOPMENT OF TOAD In toad, an amphibian and a vertebrate, Courtship takes…
THE ORGAN OF HEARING Mammals have two ears on each side of the head. The greater part of it is enclosed in the skull for protection. The ear is for hearing as well as for maintaining balance. STRUCTURE OF THE…
SENSE ORGANS : SKIN, EYES, STRUCTURES, FUNCTIONS, EYE EFFECTS & CORRECTIONS SENSORY RECEPTORS All living organisms respond to changes in their environment (stimuli). These changes can be mechanical, electromagnetic, chemical or thermal. Though most cells in the bodies of organisms…
REFLEX AND VOLUNTARY ACTIONS Actions are responses to stimuli. These actions are grouped into two: involuntary (reflex) and voluntary actions. REFLEX ACTIONS Reflex actions are automatic responses to stimuli which do not involve the conscious or higher centre of the…
These include the sensory system (receptor and nerves leading from all parts of the body to the CNS) and the motor system (nerves running from the CNS to the effectors). The PNS consists of twelve cranial nerves (connecting the brain…
THE NERVOUS SYSTEM The nervous and hormonal systems co-ordinate various biological activities in the body of multicellular animals, the basic structural unit of nervous system is the nerve cell called neurone. It consists of a dense, cell body and protoplasmic…
Hormones and Endocrine Glands Hormones are chemical substances produced or secreted by endocrine glands (ductless glands) in response to various stimuli. Hormones are secreted into the bloodstream and circulated to exert their effect on their target organs. This effect could…
Structure of the Liver The liver is the largest organ in the body of a mammal with a weight of about 1.25kg. It is reddish brown, soft with two lobes and it is located below the diaphragm on the right…
Homeostasis is the process by which a fairly constant internal environment is maintained in an organism. The internal environment of an organism is made up of the body fluid such as blood, lymph and tissue fluid. For efficient functions of…