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IGCSE Biology Extended6.2 Leaf structureTopic Practice

6.2 Leaf structure

CAIE IGCSE Biology Extended 6.2 Leaf structure question practice helps you revise this syllabus point with the course map in view. Use this page to focus on one topic, check the style of questions available, and connect each attempt back to the knowledge area it is testing.

EduNinja keeps Biology practice aligned to CAIE at Extended level, so you can move from topic review into exam-style question bank work without losing the syllabus structure. Start with a small set, mark the weak steps, then return to nearby topic links when a definition, graph, calculation, or explanation needs repair.

Question 1

[Maximum number: 9]

Fig. 1.1 is a diagram of part of a cross-section of a leaf.

Fig. 1.1

Fig. 1.1

Question 1(b)

(a)

Explain how layer B and layer C in Fig. 1.1 are adapted for their functions.

[ 6 ]

Question 1(c)

(b)

A student placed a plant in a very hot room for 12 hours. There was a bright light in the room and the plant was not given any water during the 12-hour period.

Fig. 1.2 shows a series of sketches that the student made of the stomata during the investigation.

Fig. 1.2

Fig. 1.2

[ 3 ]

Question 1(c)(i)

(i)

Identify the cell labelled D on Fig. 1.2.

[ 1 ]

Question 1(c)(ii)

(ii)

State the main function of the stomata.

[ 1 ]

Question 1(c)(iii)

(iii)

State the advantage to the plant of the change to the stomata shown in Fig. 1.2.

[ 1 ]

Question 1(a)(i)

[Maximum number: 3]

Fig. 1.1 is a diagram of an insect-pollinated flower.

Fig. 1.1

Fig. 1.1

Using the information in Fig. 1.1, complete Table 1.1.

Table 1.1

Table 1.1

Question 2

[Maximum number: 1]

What are features of the leaves of a plant that is a dicotyledon?

broad leaves

parallel veins

key

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χ=\boldsymbol{\chi}= no

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χ\boldsymbol{\chi}

χ\boldsymbol{\chi}

Question 3

[Maximum number: 1]

The diagram shows a palisade mesophyll cell from a green leaf.

Question image

In which labelled part does photosynthesis occur and where is starch stored?

photosynthesis

occurs

starch is

stored

X

W

X

Z

Y

X

Y

Y

Question 3

[Maximum number: 1]

The diagram shows two guard cells.
Which label is correct?

Question image

Question 4

[Maximum number: 1]

The diagram shows a cross-section of part of a leaf.
Which type of cell carries out the most photosynthesis?

Question image

Question 2(a)

[Maximum number: 4]

Fig. 2.1 is a diagram of a cross-section of part of a leaf.

Fig. 2.1

Fig. 2.1

Identify and explain how the structures labelled J and K are adapted for photosynthesis. J

K

Question 2(c)

[Maximum number: 4]

The concentration of atmospheric carbon dioxide has increased considerably in recent years.

The scientists also made observations of the leaf structure of the soybean plants.

Epidermis and mesophyll tissues are adapted for photosynthesis.
Complete Table 2.1 by stating two structural features of each of these tissues and explain how each feature is an adaptation for photosynthesis.

Table 2.1

Table 2.1

Question 9

[Maximum number: 1]

The diagram shows a cross-section through a leaf.

Question image

What is the cell labelled X ?

A

epidermis

B

guard cell

C

palisade mesophyll

D

spongy mesophyll

Question 9

[Maximum number: 1]

The diagrams show the structure of four different cells from the leaf of a dicotyledonous plant.
Which cell is a guard cell?

Question image

NOT TO SCALE

0 selected