Theory

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

Suggest and explain how humans can cause three undesirable effects on ocean ecosystems.1. ...............................................................

2010 Winter

1

Theory

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

(a) Pollutants can affect the environment.Draw one line from each pollutant listed to an effect it might have on the environment.[Image_1: pollutant a...

2012 Summer

2

Theory

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

Fig. 4.1 shows the water cycle.(a) (i) The arrows labelled $P$ represent evaporation. Which type of energy is needed for this process?...................

2009 Summer

2

Theory

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

Modern technology can be used to increase the yield of crops.(a) The use of chemicals, such as fertilisers, herbicides and pesticides, is one of the d...

2009 Summer

2

Theory

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

(a) Table 5.1 shows data from six countries that have large areas of tropical rainforest.Table 5.1(i) Which country had the largest area of tropical r...

2012 Summer

1

Theory

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

(a) Table 5.1 shows data from six countries that have large areas of tropical rainforest.[Table_1](i) Which country had the largest area of tropical r...

2012 Summer

3

Theory

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

Explain how the use of chemical fertilisers has increased food production in farming.

2011 Winter

4

Theory

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

Fig. 8.1 shows a food web of a community living in a Caribbean ecosystem.(a) (i) Explain the term ecosystem..............................................

2011 Summer

1

Theory

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

(a) (i) What happened to the yield of cotton over the three years if no fertiliser was added to the soil?...............................................

2010 Summer

2

Theory

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

Explain how the use of herbicides in farming has resulted in increased food production.

2011 Winter

1

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

What is defined as the chemical reactions that break down food molecules in cells to release energy?

2010 Summer

1

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows an arthropod animal. Which features are characteristic of all arthropods?

2010 Summer

3

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows a section through a flower. Using the key, identify this flower.1. sepals present ........................................... go to ...

2010 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which row shows the most likely number of chloroplasts in three types of cell in a leaf? [Table_1]

2010 Summer

1

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows some liver cells as they appear under the microscope. How many cell walls can be seen?

2010 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which row shows the structures present in plant and animal cells? [Table_1]

2010 Summer

1

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which structure is at a different level of organisation from the other three?

2010 Summer

1

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which diagram shows one organ only?

2010 Summer

2

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

On a dry, sunny day, how does water vapour move through the stomata of a leaf?

2010 Summer

2

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

The diagram shows an experiment using a potato.Which shows the result of the experiment after 24 hours?

2010 Summer

2