LIFE SCIENCES EXAM PREDICTION | Paper 1 2025

Multiple Choice Predictions (Section 1)
📌 Increased focus expected on plant hormones and responses, specifically tropisms, defense mechanisms, and auxin use in weed control.
🥚 The amniotic egg structure and layers, especially the yolk and its importance, are highly predicted topics.
🌡️ Expect significant questions on homeostasis and the endocrine system, covering thermoregulation and hormone functions across testes/ovaries.
👁️ A strong emphasis on eye receptors (rods and cones, retina) and other sensory receptor bodies like the macula and organ of Corti in the ear.

Terminology Focus
👂 Oval window is flagged as a likely terminology question due to frequent confusion with the round window; know its structure and function.
🦴 Detailed knowledge of the ear bones (ossicles)—hammer, anvil, stirrup (stapes)—including their order and proximity to the eardrum/cochlea is anticipated.
🧠 Focus shifting from myelin sheath to larger brain structures like the corpus callosum and ventricles and their functions in the nervous system.
🧪 Pituitary gland hormones like prolactin, adrenaline, and growth hormone (GH) are highlighted as "unusual" hormones likely to be tested, alongside defining the difference between exocrine and endocrine glands.

"A Both or None" & Diagram-Based Questions
❓ Expect A Both or None questions designed to confuse similar concepts, such as cranial vs. spinal nerves, sympathetic vs. parasympathetic nervous systems, or distinguishing functions of FSH and LH.
🧠 Longer questions (1.4, 1.5, 1.6) will rely heavily on diagram labeling, likely featuring a diagram of the brain (identifying medulla oblongata, cerebrum, cerebellum).
♀️ A basic question involving the female reproductive structure, possibly showing a fallopian tube, sperm, and egg, perhaps touching upon implantation.

Complex Questions (Sections 2 & 3)
👁️ Eye questions are predicted to focus heavily on accommodation (which hasn't been asked recently) and binocular vision, along with rods/cones distinction and potential questions on correcting astigmatism.
🔬 Spermatogenesis is expected, possibly presented as a case study related to sperm health, diet, or production rates rather than just anatomical diagrams.
♀️ The female reproductive system and hormones are crucial, potentially appearing twice (reproduction and endocrine sections), focusing on the ovarian cycle, FSH's negative feedback on estrogen/progesterone, and structures like the corpus luteum.
💨 Homeostasis investigation questions might link carbon dioxide regulation of pH, thermoregulation (vasodilation/sweating), and ADH function (water loss during exercise).
🌿 Plant hormones will feature geotropism (classic rotating petri dish setup) and a focus on the often-forgotten gibberellins and their role in lateral branching and defense.
🥚 Reproductive strategy questions are likely to focus on fish or reptiles, contrasting external (fish) versus internal (reptile) egg laying.
👶 The amniotic egg might require drawing a comparative table between the egg and the human ovum (oöcyte), and questions on the role/consequences of insufficient amniotic fluid.
👂 In-depth questions on the ear are expected, covering posture maintenance, the function of the Eustachian/Pharyngotympanic tube (pressure regulation).
⚡ The reflex arc is predicted to reappear, potentially integrated with a disease like Alzheimer's (linking plaque buildup to potential reflex impairment); clearly distinguish between a reflex arc and a reflex action.

Key Points & Insights
➡️ Utilize experience as a senior metric marker and head of life sciences to predict questions based on examiner trends and diagnostic reports.
➡️ Be prepared for the examiner to ask about unusual structures, layers, or lesser-known hormones that students typically overlook.
➡️ Always prepare to draw a table, graph, or diagram, as these are expected in almost every exam paper.
➡️ Pay close attention to concepts that can be "married" or overlapped (e.g., ADH/sweating/CO₂/pH) as examiners like to combine these for complex questions.

📸 Video summarized with SummaryTube.com on Nov 13, 2025, 14:02 UTC