Welcome great EduPodian, here is your Third Term SS2 Biology Lesson Note excerpt.
Scheme of Work
1. Excretion in Lower Organisms
2. Excretory System in Vertebrates and Plants
3. Male and Female Reproductive Structures
4. Sexual Reproduction
5. Reproduction in Plants
6. Pollination
7. Ecological Succession
8. Overcrowding and Food Shortage
9. Balance in Nature
10. Family Planning
REFERENCES
• Modern Biology for Senior Secondary Schools by S.T. Ramalingam
• Essential Biology by M.C Michael
• New School Biology by H. Stone and Cozen
• SSCE Past Questions and Answers
• New System Biology by Lam and Kwan
• College Biology by IdodoUmeh
• UTME and Cambridge Past Questions and Answers
• Biology Practical Textbook
Week 1:
EXCRETION AND EXCRETORY SYSTEM
CONTENT
• Excretion
• Types of Excretory structures and Taste
• Excretory Structures in some Organisms
EXCRETION
Excretion is the process by which metabolic waste products are removed from the body of all living things. Excretion is different from egestion which is the removal of solid waste (undigested food substances i.e.faeces) through the anus. Excretion is necessary for the following reasons:
To avoid or prevent any harm that would be caused by any excretory product.
Some excretory products are poisonous to the body and should be removed.
To maintain water balance in the body (homeostasis).
To avoid interference of waste products with normal metabolic activities in the body.
EXCRETORY STRUCTURES AND WASTE IN ORGANISMS… Click here to order the complete Biology Lesson Note for SS2 third term
Week 2:
EXCRETORY SYSTEM IN MAMMALS AND PLANTS
CONTENT
• Excretory system in mammals
• Structure and functions of the kidney
• Structure of the urinary tubule
• Process of urine formation
• Excretion in plants
EXCRETORY SYSTEM IN MAMMALS
Mammalian lungs excrete water vapour, and C02, the liver excretes bile pigment called bilirubin, the skin excretes water, salt and urea through the sweat, and the kidney excretes water, mineral salt and urea. The excretory system of mammals consists of a pair of kidney, ureter, bladder, renal artery and renal vein.
STRUCTURE OF THE KIDNEY
The mammalian kidney is a bean-shaped, reddish brown organ located in the posterior end of the abdomen. The right kidney is slightly lower in… Click here to order the complete third term Biology Lesson Note for SS2
Week 3:
MALE AND FEMALE REPRODUCTIVE STRUCTURES
CONTENT
• Structures and Functions of the Reproductive System (Male and Female)
• Structure of the Gametes (Sperm and Ovum)
• Differences Between Male and Female Reproductive Organs
REPRODUCTIVE SYSTEM
Most multicellular animals and plants undergo a complex form of sexual reproduction in which especially differentiated male and female reproductive cells (gametes) unite to form a single cell, known as a zygote, which later undergoes successive divisions to form a new organism. The process takes place with the help of the system known as the reproductive system.
This system can be divided into male reproductive system and female reproductive system… Click here to order the complete Lesson Note on Biology SS2 third term
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