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

Which characteristic is shown when a person smells a gas in the air?

2011 Summer

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows four arthropods. How many of these arthropods are insects?

2011 Summer

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

An organism has dry scales covering its body.To which vertebrate group does it belong?

2011 Summer

3

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows an animal. Use the key to identify the animal.1 has legs ...................................... go to 2 has no legs .................

2011 Summer

4

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows four specialised cells. Which feature is not common to all of these cells?

2011 Summer

1

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a plant cell.Which labelled structures are found in plant cells but not in animal cells?

2011 Summer

5

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows another plant cell. Which feature shows that it is a palisade cell?

2011 Summer

1

MCQ

CH6 - PLANT NUTRITION

Which structures are adapted for supporting a plant?

2011 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which describes the structure and function of a red blood cell? [Table_1]

2011 Summer

2

MCQ

CH3 - MOVEMENT IN AND OUT OF CELLS

Boiling potatoes destroys their cell membranes. A peeled, boiled potato strip is placed in a concentrated solution of salts. What takes place?

2011 Summer

1