Contents

Characteristics and classification of living organisms

Organisation of the organism

Cells under the microscope

Movement into and out of cells

Biological molecules

Food tests

Enzymes

Enzymes

Plant nutrition

Human nutrition

Transport in plants

Transport in animals

Diseases and immunity

Pathogens and disease spreadBeing prepared
Immunity and vaccinationBeing prepared

Gas exchange in humans

Gas exchange and breathing

Respiration

Respiration

Excretion in humans

Excretion and the kidneys

Coordination and response

Drugs

Antibiotics

Reproduction

Asexual and sexual reproductionBeing prepared
Flowers and pollinationBeing prepared
Fertilisation and germinationBeing prepared
Human reproductionBeing prepared
Puberty and the menstrual cycleBeing prepared
Sexually transmitted infectionsBeing prepared

Inheritance

Chromosomes, genes and allelesBeing prepared
From gene to proteinBeing prepared
Mitosis and meiosisBeing prepared
Monohybrid crossesBeing prepared
Family trees, blood groups and sex linkageBeing prepared

Variation and selection

Variation and mutationBeing prepared
Adaptation and selectionBeing prepared

Organisms and their environment

Food chains and websBeing prepared
Ecological pyramids and energyBeing prepared
Energy flow and nutrient cyclesBeing prepared
PopulationsBeing prepared

Human influences on ecosystems

Food supply and habitat lossBeing prepared
PollutionBeing prepared
ConservationBeing prepared

Biotechnology and genetic modification

BiotechnologyBeing prepared
Genetic modificationBeing prepared

Part 2 of 3

Page 02

From root hair to leaf

identify

Try it yourself

The drawing shows a cross-section of a young root. Which letter shows a root hair cell, and which shows the root cortex cells?

identify: name or select.

Drawing of a cross-section through a young root, with four parts lettered. A: one of the long, thin outgrowths on the outside of the root. B: the wide band of round cells inside the outer layer. C: the cross of thick-walled cells in the middle. D: the small cells between the arms of that cross.

Match each item

Root hair cell

Root cortex cells

Your saved work

Answers, earlier attempts and your Pause and check notes stay in this browser. Export a copy to keep, to move to another device or to hand to your teacher. Importing a copy keeps your current answers and adds earlier attempts.

Import saved work

Scope and sources

Cambridge IGCSE Biology 0610 · 2026–2028 v3 · Original learning materials.

The functions of xylem and phloem (8.1.1) and their positions in sections of roots, stems and leaves of non-woody dicotyledonous plants (8.1.2); the structure of xylem vessels (Supplement 8.1.3); root hair cells, their functions and their large surface area (8.2.1, 8.2.2); the pathway of water through the root, stem and leaf (8.2.3); the pathway of water through the above-ground parts investigated with a stain (8.2.4); translocation, sources and sinks (Supplement 8.4.1–8.4.3). Transpiration is the next module. How far the dye climbs in the experiment comes from a teaching model.

Apparatus, amounts and times in the experiment are illustrative. Real practical work follows a teacher-approved safety method.

Official Cambridge syllabus