IB Biology HL C3.1.17 Hl Tropic Responses in Seedlings Topic Practice

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A Unity and Diversity

B Form and Function

C Interaction and Interdependence

C1.1 Enzymes and metabolism

C1.2 Cell respiration

C1.3 Photosynthesis

C2.1 Chemical signalling [HL only]

C2.2 Neural signalling

C3.1 Integration of body systems

C3.1.1—System integration

C3.1.2—Hierarchy in multicellular organisms

C3.1.3—Integration of organs

C3.1.4—Brain as information integration organ

C3.1.5—Spinal cord

C3.1.6—Input through sensory neurons

C3.1.7—Output through motor neurons

C3.1.8—Nerves as bundles

C3.1.9—Pain reflex arcs

C3.1.10—Cerebellum role

C3.1.11—Melatonin and sleep

C3.1.12—Epinephrine (adrenaline)

C3.1.13—Hypothalamus and pituitary control

C3.1.14—Heart rate feedback control

C3.1.15—Ventilation rate feedback control

C3.1.16—Peristalsis control

C3.1.17 (HL)—Tropic responses in seedlings

C3.1.18 (HL)—Positive phototropism

C3.1.19 (HL)—Phytohormones

C3.1.20 (HL)—Auxin efflux carriers

C3.1.21 (HL)—Auxin promotes cell growth

C3.1.22 (HL)—Auxin and cytokinin interactions

C3.1.23 (HL)—Ethylene and fruit ripening

C3.2 Defence against disease

C4.1 Populations and communities

C4.2 Transfers of energy and matter

D Continuity and Change

IB/Biology/HL//Question Bank/C Interaction and Interdependence/C3.1 Integration of body systems/C3.1.17 (HL)—Tropic responses in seedlings

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