Edexcel IGCSE Biology 5.17B Plant cloning methods
Practise micropropagation stages using explants, sterile technique, agar nutrients and in vitro growth in practical plant-cloning contexts.
- Syllabus
- First assessment 2019
- Course
- Biology 4BI1
Exam points
- describe removing explants with sterile tools and sterilising them with bleach or alcohol
- complete tissue-culture passages using explant, agar nutrient and clone terminology
- interpret pH data for shoot growth by linking an optimum to enzyme activity
5.17B Micropropagation process question 1
Micropropagation is used to produce plant clones.
The process involves growing explants in vitro.
Question (a)
(a)
State what is meant by the term in vitro.
[ 1 ]
Question (b)
(b)
The explants grow new roots and shoots.
A student investigates the effect of pH on the growth of new shoots.
The table shows the student's results.
[ 6 ]
Question (i)
(i)
Describe a procedure the student could use to obtain explants and produce these results.
[ 6 ]
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