Quelpr
4 marksGrowth

CSEC Biology · January 2015 · Paper 2 · Question 1(d)(iv)

Figure 2 shows the growth of a seedling over eight days.

Describe an investigation to test the hypothesis, 'Water is needed for the germination of seeds'.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 1(a)(i)Identify the type of reproduction carried out by EACH of the plant organs shown in Figure 1. A: B:[2 marks]
  2. 1(a)(ii)Outline the sequence of events that would take place from pollination to the formation of the seed/fruit from the organ shown in Figure 1B.[3 marks]
  3. 1(b)Describe TWO differences between the outcomes of cell division by mitosis and cell division by meiosis.[4 marks]
  4. 1(c)Deduce the genotypes of the parent plants. Explain your answer with the aid of a genetic diagram.[3 marks]
  5. 1(d)(i)Measure the length of the radicle of the seedling on EACH day and record your measurements in Table 1.[1 mark]
  6. 1(d)(ii)Plot the data in Table 1 on the graph paper below. Put days on the horizontal (x) axis.[4 marks]
  7. 1(d)(iii)State TWO factors, other than water, that are required for the germination of the seed shown in Figure 2.[2 marks]
  8. 1(e)Suggest why the cotyledons (seed leaves) become smaller as the primary leaves increase in size.[2 marks]

More practice: the rest of this paper · more Growth questions · all CSEC Biology past papers