OrganisationAQA GCSE Biology 8461

Plant Tissues, Organs and Systems

Work through the notes, try the practice questions, then take the quiz. The report tells you exactly what to revise next. (2026)

Practice progress

5 MCQs

0 of 5 attempted

Correct

Incorrect

Remaining

1
Which leaf tissue contains the most chloroplasts?
Answer & explanation
Correct: option B
Palisade mesophyll is packed with chloroplasts and is the main site of photosynthesis.
2
Xylem cells are best described as:
Answer & explanation
Correct: option B
Xylem = dead, hollow, lignified — perfect for transporting water up the plant.
3
Phloem transports:
Answer & explanation
Correct: option B
Phloem carries dissolved sucrose in both directions through living cells with sieve plates (translocation).
4
Which feature allows gas exchange inside the leaf?
Answer & explanation
Correct: option C
Spongy mesophyll has air spaces so CO₂ and O₂ can diffuse easily between cells and the outside.
5
Guard cells control:
Answer & explanation
Correct: option B
Guard cells change shape to open or close the stomata, regulating gas exchange and water loss.

OrganisationAQA GCSE Biology 8461

Work through the notes, try the practice questions, then take the quiz. The report tells you exactly what to revise next. (2026)

5 MCQs

0 of 5 attempted

Correct

Incorrect

Remaining

1
Which leaf tissue contains the most chloroplasts?
Answer & explanation
Correct: option B
Palisade mesophyll is packed with chloroplasts and is the main site of photosynthesis.
2
Xylem cells are best described as:
Answer & explanation
Correct: option B
Xylem = dead, hollow, lignified — perfect for transporting water up the plant.
3
Phloem transports:
Answer & explanation
Correct: option B
Phloem carries dissolved sucrose in both directions through living cells with sieve plates (translocation).
4
Which feature allows gas exchange inside the leaf?
Answer & explanation
Correct: option C
Spongy mesophyll has air spaces so CO₂ and O₂ can diffuse easily between cells and the outside.
5
Guard cells control:
Answer & explanation
Correct: option B
Guard cells change shape to open or close the stomata, regulating gas exchange and water loss.