Theory

CH18 - VARIATION AND SELECTION

(a) Write a balanced equation for photosynthesis using symbols. .........................................................................................

2011 Summer

1

Theory

CH18 - VARIATION AND SELECTION

(a) Describe the two root systems shown in Fig. 2.1 and explain how each is an adaptation for survival in a desert ecosystem.[4](b) Describe and expla...

2010 Summer

2

Theory

CH18 - VARIATION AND SELECTION

(a) State three characteristic features of birds that are visible in Fig. 5.1.1 .........................................................................

2011 Winter

2

Theory

CH18 - VARIATION AND SELECTION

Which types of variation can be inherited?[Table_1]variation caused by genesvariation caused by the environmentA✔✔B✔✘C✘✔D✘✘

2012 Summer

1

Theory

CH18 - VARIATION AND SELECTION

(a) Describe the two root systems shown in Fig. 2.1 and explain how each is an adaptation for survival in a desert ecosystem. [4]........................

2010 Summer

2

Theory

CH18 - VARIATION AND SELECTION

Two species of beetle, Tribolium castaneum and T. confusum, can infest and eat stored flour.In an investigation these two species were kept together i...

2011 Winter

2

Theory

CH18 - VARIATION AND SELECTION

A man who was blood group A and a woman who was blood group B had four children, each with a different blood group A, B, AB and O. Which type of vari...

2009 Winter

2

Theory

CH18 - VARIATION AND SELECTION

Which types of variation can be inherited?[Table_1]

2012 Summer

2

Theory

CH18 - VARIATION AND SELECTION

(a) Define the term gene. ...............................................................................................................................

2009 Summer

2

Theory

CH18 - VARIATION AND SELECTION

(a) Explain the meaning of the term transpiration........................................................................................................

2012 Winter

2

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

A living organism, X, can make its own food, get rid of toxic materials and detect and respond to stimuli. What other four processes must organism X ...

2012 Summer

2

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

Which group of organisms has the following features?• three pairs of jointed legs• three-part segmented body• one pair of antennaeA arachnidsB c...

2012 Summer

2

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The table shows some characteristics of four different vertebrates.Which vertebrate is a reptile?[Table_1] Table-1: | | fins | legs | scales | hair ...

2012 Summer

2

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows a fish. Use the key to identify the fish.1. black stripe across the eye ................................. go to 2    ...

2012 Summer

2

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a student's drawing of guard cells. Which label is not correct? [Image_1: Diagram with labels] A. chloroplast B. cytoplasm C. sto...

2012 Summer

2

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a liver cell. Which structure is found in a palisade cell that is not present in this liver cell?A cell membraneB chloroplastC cytop...

2012 Summer

2

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which diagram shows a plant cell? [Image_1: A - Neuron, B - Plant Cell, C - Sperm Cell, D - White Blood Cell]

2012 Summer

2

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which statement about cells or tissues, is correct? A Cells in the respiratory tract are long and thin. B Muscle cells are biconcave. C Red blood c...

2012 Summer

3

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Why do some root cells have root hairs?A for the maintenance of the temperature of the cell sapB to increase the surface area of the cellsC to increas...

2012 Summer

1

Theory

CH3 - MOVEMENT IN AND OUT OF CELLS

Which structures must be present in a cell for osmosis to take place?A. cell (sap) vacuole and cell wallB. cell wall and cell membraneC. chloroplast a...

2012 Summer

2