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NO.102/1

Marker Code

Student Personal Identification Number (SPIN)

South Pacific Form Seven Certificate

BIOLOGY
2009
QUESTION and ANSWER BOOKLET
Write your Student Personal Identification Number (SPIN) on the top right hand corner of this page and on the fold-out flap on the last page. Answer ALL QUESTIONS. Write your answers in the appropriate spaces provided in this booklet. If you need more space for answers, ask the Supervisor for extra paper. Write your SPIN on all extra sheets used and clearly number the questions. Attach the extra sheets at the appropriate places in this booklet. Marks Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14 Question 15 Question 16 Plant Responses Plant Hormones Animal Responses Social Hierarchies Activity Patterns Protein Synthesis Human Blood Groups Gene Interactions Sex Linkage Metabolic Pathways Mutation Natural Selection in Moths Polyploidy Population Genetics Transgenesis Genome Analysis Suggested Time

10 marks 12 mins 9 marks 11 mins 7 marks 8 mins 9 marks 11 mins 10 marks 12 mins 23 marks 28 mins 8 marks 10 mins 6 marks 7 mins 8 marks 10 mins 7 marks 8 mins 4 marks 5 mins 10 marks 12 mins 7 marks 8 mins 10 marks 12 mins 10 marks 12 mins 12 marks 14 mins -------------------------150 marks 180 mins ======== ======= Check that this booklet contains pages 2-28 in the correct order and that none of these pages is blank. Pages 29 and 30 are blank. YOU MUST HAND THIS BOOKLET TO THE SUPERVISOR AT THE END OF THE EXAMINATION.

TOTAL MARKS

150

2

QUESTION ONE

PLANT RESPONSES

(10 marks)

Explain the meaning of the terms in bold in the following statements. (a) Flowering in many plants shows a circannual rhythm. _______ _______ _____ _____ (2 marks)

(b)

Vines show positive thigmotropism when they grow up another tree. _______ _______ _____ _____ (2 marks)

(c)

Plant roots show positive geotropism when growing into the soil. _______ _______ _____ _____ (2 marks)

(d)

Flowering in short day plants is a photoperiodic response. _______ _______ _____ _____ (2 marks)

(e)

Male gametes (sperm) in fern plants show positive chemotaxis when swimming to the female gametes (ova). _______ _______ _____ _____ (2 marks)

Q1

10

3

QUESTION TWO

PLANT HORMONES

(9 marks)

The diagram below shows a plant growth response to light.

(a)

Name this plant growth response. _____ (2 marks)

(b)

Name: (i) The hormone that controls this response. (ii) The site of hormone production. (2 marks)

(c) (d)

State which site (1 or 2) in Diagram B has the highest concentration of the hormone. (1 mark) Draw a diagram of the cells across the shoot from Site 1 to Site 2 to show how the hormone affects the growth of the cells.

(1 mark)

4

(e)

Describe ONE major effect on plant growth for each of the following hormones: (i) gibberellins __________

_________________________________________________________________________ (1 mark) (ii) ethene (ethylene) ____

_________________________________________________________________________ (1 mark) (iii) abscisic acid (ABA) ____

_________________________________________________________________________ (1 mark)

Q2

9

5

QUESTION THREE

ANIMAL RESPONSES

(7 marks)

Explain the meaning of the terms in bold in the following statements. (a) New Zealand bats show crepuscular activity patterns. ______ _____ (1 mark)

(b)

The relationship between leguminous plants (e.g. beans, clover) and the nitrogen fixing bacteria that live in the root nodules of these plants is known as mutualism. ______ _____

____________________________________________________________________________ (1 mark) (c) The social organisation of many animal groups (e.g. chickens) shows a pecking order. _______ _____

____________________________________________________________________________...
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