Name __________________________________________________________ Date ______________
Plant Reproduction Worksheet
1.	Plants develop brightly coloured flowers to attract animals. Which process is directly assisted by this adaptation?
A.	Seed dispersal
B.	Pollination
C.	Fertilization
D.	Germination
(Total 1 mark)
2.	Up to two additional marks are available for the construction of your answers.
(2)
	Explain the conditions that are needed to allow a seed to germinate.
(5)
(Total 7 marks)

3.	How does phytochrome control flowering in plants?
A.	Pfr turns into Pr in the light, causing short-day plants to flower.
B.	Pr turns into Pfr in the light, causing long-day plants to flower.
C.	Pfr turns into Pr in the dark, causing long-day plants to flower.
D.	Pr turns into Pfr in the dark, causing short-day plants to flower.
(Total 1 mark)
4.	(a)	The photograph below shows the flowers of Campanula persicifolia. Label structures I, II and III.

[Source: photograph provided by IB examiner]
(3)
(b)	(i)	Using the external features shown in the photograph, state the phylum to which this plant belongs.
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(1)
(ii)	Comment on the hypothesis that the plant shown in the photograph could be pollinated by an animal.
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(2)
 (Total 6 marks)

5.	What is the correct sequence of events in the germination of a starch seed?

A.	gibberellin
produced		water
absorbed		hydrolysis of
food reserves		protein
synthesis		enzymes
produced	
B.	water
absorbed		hydrolysis of
food reserves		protein
synthesis		gibberellin
produced		enzymes
produced	
C.	water
absorbed		gibberellin
produced		protein
synthesis		enzymes
produced		hydrolysis of
food reserves	
D.	gibberellin
produced		water
absorbed		protein
synthesis		enzymes
produced		hydrolysis of
food reserves	
(Total 1 mark)
6.	Up to two additional marks are available for the construction of your answers.
(2)
 Explain how flowering is controlled in long-day and short-day plants.
(7)
(Total 9 marks)

7.	What generates new cells in dicotyledonous plants?
I.	Apical meristems
II.	Lateral meristems
III.	Phloem
A.	I only
B.	II only
C.	I and II only
D.	I, II and III
(Total 1 mark)