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

CH11 - GAS EXCHANGE IN HUMANS

(a) Fig. 1.1 is a diagram of the human gas exchange system. (i) Identify the structures labelled A, B and C in Fig. 1.1.A ...............................

2020 Spring

2

Theory

CH9 - TRANSPORT IN ANIMALS

(a) Fig. 2.1 shows the transfer of materials between blood and tissues.(i) Complete Table 2.1 by:• stating the names of the fluids• writing yes if...

2020 Spring

2

Theory

Role of Adrenaline

(a) One of the characteristics of living organisms is sensitivity. Define the term sensitivity. (2) (b) State the names of two sense organs. (1) (c...

2020 Spring

2

Theory

CH7 - HUMAN NUTRITION

(a) Describe the similarities and differences between marasmus and kwashiorkor.similarities .............................................................

2020 Spring

1

Theory

CH16 - REPRODUCTION

(a) Mitosis is a type of nuclear division.Fig. 5.1 is a series of photomicrographs showing a cell dividing by mitosis.(i) State the change that has oc...

2020 Spring

2

Theory

CH21 - HUMAN INFLUENCES ON ECOSYSTEMS

(a) Atlantic cod, Gadus morhua, is a type of fish that is an important resource for commercial fishing.Fig. 6.1 shows the estimated mass of Atlantic c...

2020 Spring

2

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

2

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

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows two guard cells.Which label shows the cell wall?

2020 Summer

2

MCQ

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagrams show different levels of organisation in a plant. Which sequence shows the levels of organisation in order from smallest to largest?

2020 Summer

1