The photograph shows pea seeds with growing roots. (Source: © Sangita Pal / Alamy Stock Photo) Mitosis occurs in growing roots. A scientist allowed pea seeds to start growing in different concentrations of oxygen. Pea seeds were grown in oxygen concentrations of $$\(5 \%\)$$ and $$\(20 \%\)$$. After two days the root tips were removed. The tips were stained and observed under a microscope. The mitotic index for each root tip was determined. The results Draw a suitable table to display the data and your calculated means. (3)

Biology
IGCSE&ALevel
EDEXCEL
Exam No:WBI1601-que-20241029 Year:2024 Question No:3(b)

Answer:

An answer that includes the following:
- suitable table format with correct column headings and units (1)
- all data correctly entered (1)
- means correctly calculated (1)

Knowledge points:

CH7 – Respiration, Muscles and the Internal Environment

Solution:

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