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

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

2

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

2

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

3

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

2

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

2

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

2

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

2

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

2

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

1

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

2