Theory

CH18 - VARIATION AND SELECTION

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

2009 Summer

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

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

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

Theory

CH18 - VARIATION AND SELECTION

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

2011 Summer

Theory

CH18 - VARIATION AND SELECTION

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

2011 Winter

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

Theory

CH18 - VARIATION AND SELECTION

Which types of variation can be inherited?[Table_1]

2012 Summer

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

Theory

CH18 - VARIATION AND SELECTION

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

2012 Winter

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

What is defined as the chemical reactions that break down food molecules in cells to release energy?A excretionB movementC nutritionD respiration

2010 Summer

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows an arthropod animal. Which features are characteristic of all arthropods?A. jointed legs and segmented bodyB. jointed legs and thora...

2010 Summer

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

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

2010 Summer

Theory

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

Theory

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?A 0 B 2 C 3 D 5

2010 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which row shows the structures present in plant and animal cells?[Table_1: | | cell wall | cytoplasm | nucleus | cell membrane ||--------|-----...

2010 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which structure is at a different level of organisation from the other three?A) kidneyB) liverC) neuroneD) testis

2010 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

Which diagram shows one organ only?[Image_1 with diagrams labeled A, B, C, D]

2010 Summer

Theory

CH3 - MOVEMENT IN AND OUT OF CELLS

On a dry, sunny day, how does water vapour move through the stomata of a leaf?A. into the leaf by diffusionB. into the leaf by osmosisC. out of the le...

2010 Summer

Theory

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?ABCD

2010 Summer