Challenge Worksheet
TN-BIO-GCSE-28774 · v1.6
Testing a Leaf for Starch
GCSE · Biology · Photosynthesis · International Baccalaureate
Grade
GCSE
Subject
Biology
Topic
Photosynthesis
Subtopic
Testing a Leaf for Starch
Curriculum
International Baccalaureate
Difficulty
Higher
Time
35 minutes
Total marks
44
Student name
Teacher name
Date
Learning objectives
- Recognise testing a leaf for starch accurately in biology contexts.
- Explain the underlying rule of testing a leaf for starch in the student's own words.
- Apply testing a leaf for starch to multi-step and unfamiliar problems.
- Justify a chosen method and identify errors in another student's work.
Skills assessed
- Fluency and recall
- Method and setting out
- Reasoning and justification
- Problem solving in context
- Self-assessment
Instructions
- Write your name, your teacher's name and the date in the header.
- Answer every question in the space provided. Continue on the back if needed.
- Show all working — method marks are awarded even when the final answer is wrong.
- Aim to finish in about 35 minutes.
- Complete the reflection box at the end before you hand the sheet in.
Warm-up
Bloom: Remember · 3 marks
Answer quickly. These check you are ready for the topic.
1.Write down one fact you already know about testing a leaf for starch.
[1]2.Name one fact you already know about testing a leaf for starch.
[1]3.Write down one fact you already know about testing a leaf for starch.
[1]
Recall
Bloom: Remember · 3 marks
Complete from memory. No calculator, no notes.
1.Define the key term used in testing a leaf for starch described here: item 1.
[1]2.Define the key term used in testing a leaf for starch described here: item 2.
[1]3.Define the key term used in testing a leaf for starch described here: item 3.
[1]