Biology · GCSE · Cells & Organisation

Plant tissues and the leaf

gcse-biol-4-2-3-1Free0:24Heddy Score 3 of 7, below the standard

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What you need to know

  • A leaf is a plant organ made of several tissues
  • The palisade layer is packed with chloroplasts for photosynthesis

In this clip

0:28–2:11Animal and plant cell structuresgcse-biol-4-1-1-2
2:11–2:47Eukaryotic and prokaryotic cellsgcse-biol-4-1-1-1a
2:47–3:57Specialised cellsgcse-biol-4-1-1-3
3:57–4:36Light and electron microscopesgcse-biol-4-1-1-5a
5:07–5:42Cell division & growthbh4
5:42–6:57Stem cells: what they are and where they are foundgcse-biol-4-1-2-3a
6:57–8:18Diffusion and what changes its rategcse-biol-4-1-3-1a
8:18–8:51Osmosisgcse-biol-4-1-3-2
8:51–9:22Active transportgcse-biol-4-1-3-3
9:22–10:03Tissues → organs → systemsb2
10:54–12:32Digestive enzymes and bilegcse-biol-4-2-2-1b
12:32–14:19How enzymes workgcse-biol-4-2-2-1a
15:05–17:35The heart and double circulationgcse-biol-4-2-2-2a
17:35–18:36Blood vesselsb28
19:19–21:06Coronary heart disease and its treatmentgcse-biol-4-2-2-4
21:28–23:16Health and diseasegcse-biol-4-2-2-5
23:16–25:22Cancergcse-biol-4-2-2-7
25:22–25:46Plant tissues and the leafgcse-biol-4-2-3-1
25:46–26:21Xylem, phloem and translocationgcse-biol-4-2-3-2b
26:21–28:07Transpiration and stomatagcse-biol-4-2-3-2a
28:07–29:28Pathogens & diseaseb35
29:28–33:31Viral diseases: measles, HIV and tobacco mosaic virusgcse-biol-4-3-1-2
33:31–36:00Bacterial diseases: salmonella and gonorrhoeagcse-biol-4-3-1-3
39:01–41:23Vaccinationb85
41:23–43:08Antibiotics & resistanceb79
43:22–46:02Where medicines come fromgcse-biol-4-3-1-9a
46:36–51:13Rate of photosynthesis and limiting factorsgcse-biol-4-4-1-2a
51:13–54:20Aerobic respirationgcse-biol-4-4-2-1a
54:20–55:01Anaerobic respiration and fermentationgcse-biol-4-4-2-1b
55:01–56:37Metabolismgcse-biol-4-4-2-3
Also coversDigestion & nutritionb3
Also coversThe gas exchange systemb24
Also coversBlood componentsb32
Also coversFungal disease: rose black spotgcse-biol-4-3-1-4
Also coversProtist disease: malariagcse-biol-4-3-1-5
Also coversThe body's defencesb36
Also coversDNA and the genomegcse-biol-4-6-1-3
Heddy Score3/7, Below the standard
  • Trusted source · passed. The creator's own upload, live and playable here.
  • On the map · not judged yet. A teacher watched it: it mainly teaches this map topic.
  • Spec-true · not judged yet. Accurate, and right for the current UK specification.
  • Focused · passed. One idea, short enough to watch in one go.
  • Accessible · passed. Good captions, clear sound and pictures.
  • Safe for children · not judged yet. Right for 11 to 16 year olds, with no sales pitch.
  • Proven · not judged yet. Earned from our students: they learn from it, find it helpful and watch it to the end.
★ passed · ☆ pending · ✕ failed
Our students

Not enough students yet

Our own students' answers. These are what move ★7 Proven.
How the Heddy Score works

Why we picked it

A long AQA Paper 1 revision run-through suited to Year 10 and 11 students revising; 30 sections timed, the separate-science extras at the end are not mapped.

Primrose Kitten Academy | GCSE & A-Level Revision on YouTubechecked 2026-10-16