Biology Form Two - 100 Homework Questions & 25-Question Model Exam

Form Two Biology bridges the foundational introductory biology of Form One with the advanced physiology and genetics of Forms Threeand Four. Developed strictly in accordance with the Tanzania Institute of Education (TIE) Certificate of Secondary Education
Examination (CSEE) Biology Syllabus and the curriculum framework curated on the Dadisi Digital Library (Grade 2 Biology), this
comprehensive workbook covers all 5 official syllabus topics:
• Classification of Living Things: Characteristics and economic importance of Kingdom Fungi (Rhizopus, yeast, edible mushrooms,
penicillium, plant and animal mycoses, industrial fermentation, lichens as bioindicators); Kingdom Plantae (Bryophyta, Pteridophyta,
Spermatophyta: Gymnosperms vs Angiosperms, Monocots vs Dicots); and Kingdom Animalia (diagnostic characteristics of
Invertebrates: Platyhelminthes, Nematoda, Annelida, Arthropoda, and Vertebrates).
• Nutrition: Concepts of autotrophic and heterotrophic nutrition; classes of food nutrients and their metabolic roles; balanced diet and
malnutrition disorders (Kwashiorkor, Marasmus, Vitamin deficiencies A, B1
, C, D); laboratory biochemical food tests (reducing and
non-reducing sugars, starch, proteins, lipids); human alimentary canal, dentition, mechanical mastication, and enzymatic digestion
(mouth, stomach, duodenum, ileum); absorption and assimilation; and plant nutrition (photosynthesis light and dark reactions, leaf
adaptations, and limiting factors).
• Balance of Nature: Ecological concepts (ecosystem, habitat, niche, population, community); biotic and abiotic environmental factors;
linear food chains, interconnected food webs, and trophic levels; ecological pyramids of numbers, biomass, and energy (10% energy
transfer rule); biogeochemical cycles (carbon, nitrogen, water cycles); interspecific interactions (symbiosis, commensalism, parasitism,
predation, competition); population growth dynamics (sigmoid curves, carrying capacity); environmental pollution (air, water, soil,
eutrophication, biomagnification); and sustainable conservation.
• Transport of Materials in Living Things: Necessity of transport systems (surface area to volume ratio); cellular transport
mechanisms (diffusion, osmosis, active transport, plasmolysis, turgidity, haemolysis, crenation); plant water and mineral uptake (root
hair adaptations, apoplast/symplast pathways, xylem structure); forces of sap ascent (transpiration pull, cohesion, adhesion, root
pressure); transpiration factors and xerophytic adaptations; phloem translocation (sieve tubes, companion cells, ringing experiment); and
animal circulatory systems (open vs closed, single vs double circulation, human heart anatomy, blood vessels, blood components, ABO
blood groups, clotting cascade, and lymphatic system).
• Gaseous Exchange and Respiration: Structural criteria for respiratory surfaces; gaseous exchange in Amoeba, insects (tracheal
system), fish (gills and counter-current flow), amphibians, and humans; human respiratory tract, mechanics of breathing (inhalation and
exhalation), alveolar diffusion, gas transport in blood, and respiratory pathologies (TB, asthma, effects of smoking); gaseous exchange
in plants (stomata, lenticels, compensation point); and cellular respiration (ATP energy currency, aerobic respiration equations,
anaerobic fermentation, lactic acid accumulation, and oxygen debt).