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GRADE 10
LIFE SCIENCES SBA – ASSIGNMENT
MARKS: 50
TIME: 1 Hour – 1 Hour 30
PLANT TISSUES, PLANT ORGANS, & TRANSPORT SYSTEMS IN PLANTS
ACTUAL MARKS INTERNAL EXTERNAL
MODERATION MARKS MODERATION MARKS
LEARNER NAME
CLASS
INSTRUCTION & INFORMATION
1. Answer all the questions.
2. Write neatly and legibly.
3. Present your answers according to the instructions of each question.
4. Do ALL drawings in pencil and label them in blue or black ink.
5. Draw diagrams, tables, or flow charts only when asked to do so.
6. The diagrams in this question paper are NOT necessarily drawn to scale.
7. Do NOT use graph paper.
8. You may use a non-programmable calculator, protractor, and a compass
where necessary.
9. Round off ALL calculations to two decimals after the comma.
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QUESTION 1
1. PLANT TISSUES
1.1. Study the diagram below and answer the questions that will follow.
1.1.1. Identify the permanent tissue shown in the diagram above.
______________________________________________ (01)
1.1.2. Provide suitable labels for the structures labelled:
A______________________________ (01)
B______________________________ (01)
C______________________________ (01)
1.1.3. Write down the functions of the following labelled structures.
A_____________________________________________________________
_______________________________________________ (01)
C____________________________________________________________
________________________________________________ (01)
1.1.4. Tabulate TWO differences between the cells labelled A and B. (05)
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1.1.5. Explain TWO general structural adaptations for the permanent tissue you
identified in question 1.1.1.
Structure Function
(04)
1.1.6. Give the correct biological term in each of the following statements about
tissues.
Statement Biological term
a. A ground tissue that stores food and water
and has intercellular spaces between cells.
b. A vascular tissue that transports inorganic
compounds in an upward direction.
c. A tissue with actively dividing cells with
prominent nuclei and dense cytoplasm.
d. A ground tissues with cells with a cell wall
that is more thickened at the corners.
e. A conducting tissue responsible for the
translocation of manufactured sugars to the
rest of the plant.
(05)
[20]
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QUESTION 2
2. PLANT ORGANS
2.1. The diagram below shows the internal leaf of a dicotyledonous plant.
2.1.1. Write down the LETTER of the part that represents:
f. Palisade cell________ (01)
b. Lower epidermis cell_________ (01)
2.1.1. Write down the function of the part labelled A.
_____________________________________________________________
______________________________________________ (01)
2.1.2. Tissue C has TWO main cells. Name them below.
______________________________________
______________________________________ (02)
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2.2. Draw a cross section of a young dicotyledonous root.
(05)
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QUESTION 3
3.
3.1. The following apparatus was to investigate how temperature affects
transpiration rate.
3.1.1. What is the name of this apparatus?
_______________________________ (01)
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3.1.2. Why should this apparatus be allowed to stand before starting the
experiment?
______________________________________________________________
________________________________________________ (01)
3.1.3. Identify the:
a. Independent variable____________________________ (01)
b. Dependent variable_____________________________ (01)
3.1.4. Give a hypothesis for this experimental investigation.
______________________________________________________________
______________________________________________________________
________________________________________________ (02)
3.1.5. Predict what would happen to the speed of movement of the air bubble if
Vaseline was applied to the ventral surfaces of all the leaves. Explain your
answer.
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
_______________________________________________ (03)
3.1.6. Mention ONE way that can be done to improve the reliability of this
investigation?
________________________________________________
________________________________________________ (01)
3.1.7. Mention TWO factors other than temperature that cause an increase in the
rate of transpiration.
_______________________________________________
_______________________________________________
_______________________________________________ (02)
3.1.8. At the end of the investigation the results of the investigation were presented
as follows:
Draw a line graph to represent the results.
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(06)
3.1.9. What can you conclude about the relationship between temperature and
transpiration rate?
______________________________________________________________
______________________________________________________________
______________________________________________________________
__________________________________________________ (02)
[20]
GRAND TOTAL: 50
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