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

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

(a) Identify the structure in the cell that contains the genetic material.Label this structure on Fig. 1.1 by stating its name in the space provided a...

2022 Spring

2

Theory

CH16 - REPRODUCTION

(a) Fig. 2.1 is a diagram of the male reproductive system in humans. The boxes on the left show the letters in Fig. 2.1 that identify parts of the mal...

2022 Spring

3

Theory

CH9 - TRANSPORT IN ANIMALS

(a) Fig. 3.1 is a diagram of a section through a human heart. (i) Draw the letter X on Fig. 3.1 to show the position of the septum. [1](ii) State the ...

2022 Spring

3

Theory

CH12 - RESPIRATION

(a) A student investigated aerobic respiration in an arthropod.Fig. 4.1 shows the apparatus the student used.The potassium hydroxide solution removed ...

2022 Spring

4

Theory

CH6 - PLANT NUTRITION

(a) Fig. 5.1 is a drawing of part of a cross-section of a leaf. (i) Complete Table 5.1 by stating the names of the parts labelled in Fig. 5.1.Table 5....

2022 Spring

2

Theory

CH5 - ENZYMES

(a) A researcher investigated the effect of temperature on two different biological washing powders, A and B. Two identical pieces of clothing were s...

2022 Spring

1

Theory

CH19 - ORGANISMS AND THEIR ENVIRONMENT

(a) Scientists recorded the percentage of endangered species in each of the five groups of vertebrates, in 2000 and 2011. Fig. 7.1 shows the results....

2022 Spring

2

MCQ

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

All living organisms release energy from nutrient molecules within their cells. What is the name of this characteristic?

2022 Summer

1

MCQ

Biological Classification System and Evolutionary Relationships

The horse, Equus ferus, and the donkey, Equus asinus, are able to interbreed. The offspring they produce is called a mule. Which statement is correct...

2022 Summer

2

MCQ

Animal Kingdom - Arthropods and Vertebrates

The diagram shows an organism. Which type of arthropod is this organism?

2022 Summer

4