Theory

CH8 - TRANSPORT IN PLANTS

Cobalt chloride paper is blue when dry but turns pink when wet. Some blue cobalt chloride paper was fastened to the upper and lower surfaces of a leaf...

2009 Summer

Theory

CH8 - TRANSPORT IN PLANTS

The diagrams show stages in the passage of water through a plant.The circles are the starting points for arrows to show the direction in which the wat...

2009 Summer

Theory

CH8 - TRANSPORT IN PLANTS

Translocation occurs in phloem tubes. Aphids feed on the contents of phloem tubesWhat type of food would be lacking in their diet?A. amino acidB. fatC...

2009 Summer

Theory

CH8 - TRANSPORT IN PLANTS

Fig. 4.1 is a photograph of a root of radish covered in many root hairs. (a) Using the term water potential, explain how water is absorbed into root h...

2009 Summer

Theory

CH8 - TRANSPORT IN PLANTS

The diagram shows a plant. What is the pathway taken by most of the water absorbed by this plant?A X → Y → ZB W → Y → ZC Z → Y → XD Z → ...

2009 Winter

Theory

CH8 - TRANSPORT IN PLANTS

The diagram shows a plant. What is the pathway taken by most of the water absorbed by this plant?A. $X \to Y \to Z$B. $W \to Y \to Z$C. $Z \to Y \to X...

2009 Winter

Theory

CH8 - TRANSPORT IN PLANTS

What is a description of transpiration?A exchange of gases between the leaf and the atmosphereB loss of water vapour from the leaves and stems of a pl...

2010 Summer

Theory

CH8 - TRANSPORT IN PLANTS

The diagram shows the stem of a plant. A strip of the outer tissue including the phloem has been removed. How is transport in the plant affected?A. Am...

2010 Summer

Theory

CH8 - TRANSPORT IN PLANTS

The diagram shows the stem of a plant. A strip of the outer tissue including the phloem has been removed.How is transport in the plant affected?A Amin...

2010 Summer

Theory

CH8 - TRANSPORT IN PLANTS

What is a description of transpiration? A exchange of gases between the leaf and the atmosphere B loss of water vapour from the leaves and stems of ...

2010 Summer

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram illustrates some of the processes carried out by living organisms. Which characteristic of living organisms is represented by arrow X? ...

2015 Summer

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

What is a correct way of naming a species, according to the binomial system? A. Homo sapiens B. Homo Sapiens C. human being D. sapiens

2015 Summer

Theory

CH1 - CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS

The diagram shows four arthropods.[Image_1: Diagram of Pediculus ×20, Anopheles ×10, Dermacentor ×7, Carcinus ×0.5]How many of these arthropods ar...

2015 Summer

Theory

CH4 - BIOLOGICAL MOLECULES

The key can be used to distinguish between four different chemical substances. Use the key to identify which substance could be a protein. 1 contain...

2015 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows two guard cells from a leaf.Which labelled part would also be found in liver cells?

2015 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows part of a leaf in cross-section.Structures X and Y are both part of the sameA. cell.B. organ.C. tissue.D. vessel.

2015 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a plant cell. Which features show that it is a plant cell?A It has a cell wall and a vacuole.B It has a nucleus and cytoplasm.C It h...

2015 Summer

Theory

CH8 - TRANSPORT IN PLANTS

In a section through a plant, a student found a group of long, microscopic structures. The structures lacked end walls, cytoplasm and nuclei.Which ide...

2015 Summer

Theory

CH2 - ORGANIZATION AND MAINTENANCE OF THE ORGANISM

The diagram shows a specialised cell cut in half. What does this diagram indicate about the structure of this cell?A The cell has a cell wall.B The ...

2015 Summer

Theory

CH6 - PLANT NUTRITION

How do carbon dioxide and oxygen move in and out of a mesophyll cell?A. active transportB. diffusionC. respirationD. transpiration

2015 Summer