MCQ

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

What could be a consequence of deforestation?

2009 Summer

MCQ

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

The diagram shows the positions of four farms and the concentrations of nitrate at different points in a river. Which farm is likely to have been usin...

2009 Summer

MCQ

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

Untreated sewage can cause pollution of streams and rivers. Some changes in streams and rivers after sewage is added are shown. 1. fish die 2. the d...

2009 Summer

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

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

MCQ

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

The levels of carbon dioxide in the Earth\'s atmosphere have increased during the last one hundred years.What is the most likely cause of this?

2009 Winter

MCQ

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

The graph shows the relationship between sulfur dioxide pollution and the number of lichen species found on trees. From the graph, which statement is...

2009 Winter

MCQ

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

The graph shows the relationship between sulfur dioxide pollution and the number of lichen species found on trees.From the graph, which statement is c...

2009 Winter

MCQ

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

The levels of carbon dioxide in the Earth's atmosphere have increased during the last one hundred years. What is the most likely cause of this?

2009 Winter

MCQ

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

What makes nuclear fall-out dangerous to living organisms?

2010 Summer

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

(a) Fig. 1.1 shows six species of reptiles.[Image_1: Fig. 1.1](i) Use the key to identify each species. Write the letter of each species (A–F) in th...

2020 Spring

Theory

CH11 - GAS EXCHANGE IN HUMANS

(a) A class of students measured their breathing rates during different activities. Average breathing rates for the class were calculated. Student A c...

2020 Spring

Theory

CH17 - INHERITANCE

(a) The length of hair in cats is controlled by a single gene.• The allele for short hair is dominant – $H$• The allele for long hair is recessi...

2020 Spring

Theory

CH16 - REPRODUCTION

(a) A study estimated the percentage effectiveness of different types of birth control. Table 4.1 shows examples of four different categories of birth...

2020 Spring

Theory

CH19 - ORGANISMS AND THEIR ENVIRONMENT

(a) Fig. 5.1 is a photograph of a giant panda. State the name of the vertebrate group that giant pandas belong to. ...................................

2020 Spring

Theory

CH8 - TRANSPORT IN PLANTS

(a) Complete the definition of the term transpiration. Transpiration is the loss of water vapour from plant leaves by ...................................

2020 Spring

Theory

CH7 - HUMAN NUTRITION

(a) Fig. 7.1 is a diagram of the alimentary canal and associated organs. The boxes on the left show the letters on Fig. 7.1.The boxes in the middle sh...

2020 Spring

Theory

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

(a) The box on the left contains the phrase ‘intensive livestock farming’.The boxes on the right contain some sentence endings.Draw two lines from...

2020 Spring

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows what happened in an experiment with plant seedlings. Which characteristic of living things made the seedlings grow towards the lig...

2020 Summer

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

A rat has the scientific name Rattus rattus.What do the two parts of this name refer to?

2020 Summer