A horticultural centre grows spider plants. Batch R is produced from plantlets formed asexually by one parent plant. Batch S is grown from seeds formed by sexual reproduction between several parent plants. Both batches are established in the same warm room before being transferred to the same cooler room. Each surviving plant then produces a new generation by the same method used for its batch.
The table shows the results.
| Measurement | Batch R | Batch S |
|---|---|---|
| Number of plants transferred to the cooler room | 240 | 150 |
| Number of plants alive after eight weeks | 36 | 60 |
| Number of new plants established in the following growing season | 72 | 108 |
Calculate the percentage of each batch that was alive after eight weeks in the cooler room.
Explain which batch is more suitable for producing spider plants in the cooler room and predict how repeated generations in this room could affect this batch. Use the information in the table.
92 exam-style questions on Edexcel GCSE Biology 3.1 Reproduction and meiosis, covering 3.1.1 Advantages and disadvantages of reproduction and 3.1.2 Role of meiotic cell division. Each one has a worked solution and a mark scheme showing where the marks go.