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Create a brief outline of an identification key (dichotomous key) for the differentiation of ALL the Protozoa


1. A scientific method is understood as:



a) A method that has six processes.


b) an empirical method acquiring knowledge.


c) a method of testing the hypothesis and predictions.


d) A method of analyzing data and drawing conclusions.



Compare and contrast the reproduction of perch and shark

Frog lungs are quite small, give a brief explanation for such formation

List several characteristics that eubacteria and archaea have in common and that distinguish them from eukaryotes. 


Which of the following terms describes DNA?

a. double-strands

b. double helix

c. double nucleotides

d. Both a and b are correct answers.

e. All of the above are correct answers.


Which of the following choices is a deoxyribonucleotide?

a. Adenosine

b. Cytosine

c. Thymine

d. Guanosine

e. None of the above is a deoxyribonucleotide.


Briefly explain the evolution of microbiology, discuss the scientist contribution, the spontaneous generation

Outline the main concepts of entropy and free energy. [10 marks]



2. Describe photorespiration and how its limitations are imposed on carbon assimilation by



the photosynthetic carbon oxidation cycle in C3 plants. [20 marks]

1. Explain the following concepts in relation to plant movements under the following


headings; definition, purpose and stimulus.


a) Gravitropism


b) Phototropism


c) Thirgmorphogenesis


d) Nyctinasty (20 marks)


2. Explain the role of the following compounds in a plant


a) Cutin


b) Suberin


c) Pyrethroids


d) Anthocyanins (8 marks)


3.


i) Give a definition of a plant hormone (2 marks)


ii) Describe the effects of the following major plant hormones (Auxins, Gibberelins,


Cytokinins, Abscisic acid and Ethylene) on the plant.