Author: MJ

Gaseous Exchange in Plants Gaseous exchange: process by which respiratory gases, O2 and CO2, are passed across the respiratory surface Concentration gradient existing btn the respiratory surface and the surrounding medium facilitates gaseous exchange The mechanism of exchange involves simple Read More …

Need for Transport carry required substances to body parts remove metabolic wastes from the body Lower organisms and simple multicellular organisms have small bodies that make them have a large surface area to volume ratio. Diffusion alone is enough to Read More …

TOPIC 1 : TRANSPORT IN PLANTS AND ANIMALS – Click to view TOPIC 2 : GASEOUS EXCHANGE – Click to view TOPIC 3 : RESPIRATION – Click to view TOPIC 4 : EXCRETION AND HOMOESTASIS – Click to view

TUESDAY: 6 December 2022. Morning paper. Time Allowed: 2 hours. Answer ALL questions by indicating the letter (A, B, C or D) that represents the correct answer. This paper is made up of fifty (50) Multiple Choice Questions. Each question Read More …

MONDAY: 5 December 2022. Afternoon Paper. Time Allowed: 3 hours. Answer ALL questions. This paper has two sections. SECTION I has twenty (20) short response questions. Each question is allocated two (2) marks. SECTION II has three (3) practical questions Read More …

MONDAY: 5 December 2022. Morning Paper. Time Allowed: 3 hours. Answer ALL questions. This paper has two sections. SECTION I has twenty (20) short response questions. Each question is allocated two (2) marks. SECTION II has three (3) practical questions Read More …