Theory

CH18 - VARIATION AND SELECTION

(a) Wheat is a type of grass that has been grown by humans for about 9000 years. The earliest variety is called emmer.Fig. 5.1 shows emmer wheat and a...

2013 Winter

2

Theory

CH18 - VARIATION AND SELECTION

An adaptive feature helps an organism survive in its environment.Adaptive features are inherited.Fig. 5.1 contains diagrams of three animals.(a) For e...

2017 Summer

2

Theory

CH18 - VARIATION AND SELECTION

(a) Polar bears live in and around the Arctic Circle, surviving in extremely cold conditions.Describe and explain one visible adaptive feature that en...

2017 Summer

2

Theory

CH18 - VARIATION AND SELECTION

(a) Sheep are important animals in many parts of the world as they produce meat, wool and milk.Table 10.1 describes some characteristics of five diffe...

2018 Summer

3

Theory

CH18 - VARIATION AND SELECTION

(a) There are two types of cell division, meiosis and mitosis.Cells produced by each type of division have different characteristics and functions.Com...

2017 Summer

2

Theory

CH18 - VARIATION AND SELECTION

(a) The theory of natural selection explains how one species can gradually evolve into a new species.The statements A to F describe six stages in the ...

2017 Summer

1

Theory

CH18 - VARIATION AND SELECTION

(a) Define the term variation............................................................................................................................

2019 Winter

2

Theory

CH18 - VARIATION AND SELECTION

(a) Organisms pass on their genetic information in their gametes.(i) State the name of the type of cell division that produces gametes...................

2018 Summer

2

Theory

CH18 - VARIATION AND SELECTION

Fig. 7.1 is a photograph of a large-scale monoculture of soybeans which are a crop plant.(a) Describe the disadvantages of large-scale monocultures......

2019 Winter

1

Theory

CH18 - VARIATION AND SELECTION

(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

1

Theory

CH7 - HUMAN NUTRITION

Fig. 1.1 is a diagram of the alimentary canal and associated organs.(a) State the letter from Fig. 1.1 that identifies the part where:alcohol is broke...

2021 Spring

2

Theory

Heart Rate and Pulse Rate

(a) Different age groups of people, in one area, were asked about their tobacco smoking habits. Fig. 2.1 is a graph that shows the percentage of peop...

2021 Spring

1

Theory

CH19 - ORGANISMS AND THEIR ENVIRONMENT

(a) A scientist found that chuckwallas were also eaten by coyotes.Draw an arrow on Fig. 3.1 to show this information. [1](b) Table 3.1 shows some of t...

2021 Spring

2

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

(a) Fig. 4.1 is a diagram of a plant cell.Identify the parts of the plant cell in Fig. 4.1 by labelling them in the spaces provided, using words from ...

2021 Spring

2

Theory

CH6 - PLANT NUTRITION

(a) A student investigated the effect of the concentration of carbon dioxide on the rate of photosynthesis in an aquatic plant.Table 5.1 shows the res...

2021 Spring

2

Theory

CH12 - RESPIRATION

(a) The box on the left contains the term `Anaerobic respiration`.The boxes on the right show some sentence endings.Match the box on the left to three...

2021 Spring

1

Theory

CH9 - TRANSPORT IN ANIMALS

(a) Fig. 7.1 is a diagram of the circulatory system.[Image_1: Fig. 7.1](i) State the names of the blood vessels labelled A, C and E in Fig. 7.1.A .......

2021 Spring

1

Theory

CH16 - REPRODUCTION

(a) Menstruation is the monthly loss of the lining of the uterus.The age, in years, when the first menstruation occurred was recorded for one area.Tab...

2021 Spring

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

What is a characteristic of all living organisms?

2021 Summer

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The scientific names of some animals are listed.1. _Camelus dromedarius_2. _Camelus ferus_3. _Equus ferus_4. _Struthio camelus_Which animals are in th...

2021 Summer

1