Student Name: ________________________________
Diversity of Organisms
Q1
The diagram shoes the structure of Rhizopus. Label the parts numbered 1 to 10.
1
___________________________________
2
___________________________________
3
___________________________________
4
___________________________________
5
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6
___________________________________
7
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8
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9
___________________________________
10
___________________________________
10(2) marks
Q2
With regard to the economic importance of Fungi provide examples of 2 beneficial
fungi and 2 harmful fungi.
Beneficial Fungi
1. _______________________________________________________________________
2. _______________________________________________________________________
Harmful Fungi
1. _______________________________________________________________________
2. _______________________________________________________________________
4(4) marks
Q3
Fill in the blank spaces with the most appropriate words.
Sexual reproduction in Rhizopus occurs when hyphae from opposite ________________ grow close
together. Swellings form opposite each other and touch. __________________ move into each
swelling, forming ____________________. Cross walls then form to produce
_______________________. The walls separating these then dissolve and many
____________________ occur producing ____________________ zygote nuclei. A tough
_____________________ then forms around these nuclei which can remain ___________________
until conditions are favourable. After meiosis occurs a hypha grows out of the zygospore and produces
a _______________________ at the tip. This releases many ____________________ spores.
10(2) marks
Student Name: ________________________________
Q4
The diagram shoes the structure of Amoeba. Label the parts numbered 1 to 10.
1
___________________________________
2
___________________________________
3
___________________________________
4
___________________________________
5
___________________________________
6
___________________________________
7
__________________________________
8
___________________________________
9
___________________________________
10
___________________________________
10(2) marks
Explain clearly what happens to this organism in fresh water and how it deals with this problem.
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
4 marks
Q5
The diagram shows a bacterial growth curve. Label
the stages A, B, C, D and E.
A ______________________________
B ______________________________
C ______________________________
D ______________________________
E ______________________________
State why the curve is behaving in this way for each of the letters in the diagram
A __________________________________________________________________________________
B __________________________________________________________________________________
C __________________________________________________________________________________
D __________________________________________________________________________________
E __________________________________________________________________________________
10(2) marks