40 INSTRUCTIONS AND INFORMATION / Instruksies en Inligting 1 ...

Plant Tissue/ Plantweefsel Gr 10 Marks / Punte: 40
INSTRUCTIONS AND INFORMATION / Instruksies en Inligting
1. Answer ALL the questions / Beantwoord al die vrae
2. Number the answers correctly / Nommer die vrae korrek
3. All drawings should be done in pencil and labeled in blue or black ink / Alle
sketse moet in potlood wees en die byskrifte in blou of swart ink
4. The diagrams in this question paper are NOT necessarily drawn to
scale / Die diagramme in die vraestel is nie noodwendig volgens skaal
nie
SECTION / Afdeling A
Question / Vraag 1
1.1 Various possible options are provided as answers to the following questions.
Choose the correct answer and write only the letter (A – D) next to the question
(1.1.1 – 1.1.3). For example 1.1.6 D. / Vier moontlike antwoorde word by elke
vraag verskaf. Kies die beste antwoord en skryf die letter (A – D) langs die
vraagnommer (1.1.1 – 1.1.3) bv. 1.1.5. D.
1.1.1 The following is needed for photosynthesis: / Die volgende word vir fotosintese
benodig:
A O2, CO2 and light / en lig
B H2O, CO2 and light / en lig
C CO2 and light / en lig
D H2O and light / en lig
1.1.2 The stomata control the supply of the following raw material that is necessary for
photosynthesis / Die huidmondjies beheer die beskikbaarheid van die volgende
grondstof wat vir fotosintese benodig word:
A Enzymes / Ensieme
B Carbon dioxide / Koolstofdioksied
C Oxygen / Suurstof
D Mineral salts / Mineraal soute
1.1.3 The main force causing water to flow from the roots to the leaves is ... / Die hoof
krag wat verantwoordelik is vir die vloei van water van die wortels na die blare is ...
A Root pressure / Worteldruk
B Resspiration/ Respirasie
C Capillarity /Kapillariteit
D Transpiration / Transpirasie (2 x 3)
1.2 Each of the following statements can be replaced by a biological term. Write only
the term beside the appropriate number on the answer sheet. / Elkeen die
volgende stellings kan vervang word met 'n biologiese term. Skry slegs die
term langs die gepaste nommer neer.
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1.2.1 The type of tissue responsible for transporting water. / Die tipe weefsel wat
verantwoordelik is vir die vervoer van water.
1.2.2 Cells that regulate the release of water from a leaf. / Selle wat verantwoordelik is vir
die vrystelling van water by 'n blaar.
1.2.3 The force between water molecules. / Die krag tussen water molekule.
(1 x 3)
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1.3 Choose a description from COLUMN B that matches an item in COLUMN A.
Write only the letter (A – G) next to the question number (1.3.1 – 1.3.3), for
example 1.3.6 J. / Kies uit kolom B 'n beskrywing wat die beste pas by die
item in kolom A. Skryf slegs die letter langs die vraagnommer, bv. 1.3.6 J.
Question COLUMN A
Answer
Antwoord COLUMN B
1.3.1 Cuticle / Kutukila A Photosynthesis / Fotosintese
1.3.2 Turgor / Turgor B
1.3.3
Guard cells /
Sluitselle
SECTION / Afdeling B
Question / Vraag 2
C
D
E
Hard and thickened walls / Harde en
verdikte wande
Wilting / Verlep
Water proof / Waterdig
Xylem/ Xileem
2. Study the diagram below and answer the questions that follow. / Bestudeer die
volgende diagram en beantwoord die vrae wat volg.
3
1
2.1 (a) What type of tissue is found at 3 ? / Watter tipe weefsel word by 3 aangetref?(1)
(b) Can this tissue undergo photosynthesis? / Kan die weefsel fotosinteer? (1)
2
(3)

(c) Explain your answer to 2.1(b) / Verduidelik jou antwoord op 2.1(b) (2)
2.2 What structure is represented in the diagram? / Watter struktuur word in die
diagram voorgestel? (1)
2.3 Give the name for structure 1. / Identifiseer struktuur 1. (1)
2.4 Where does one find the structure/organ (in the diagram) on a plant? / Waar word
die struktuur/orgaan (in die diagram) op 'n plant aangetref? (1)
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Question / Vraag 3
3. Study the following diagrams and then answer the questions that follow. /
Bestudeer die volgende diagramme en beantwoord die volgende vrae.
3.1 What is represented here in diagram 3? / Wat word hier voorgestel in diagram 3?(2)
3.2.1 What is represented by the number 3 in Diagram 3 ? / Wat word voorgestel deur
nommer 3 in Diagram 3 ? (1)
3.2.2 Give 2 functions of structure (number) 3./ Gee 2 funksies van struktuur (nommer) 3.
(2)
3.3 What is structure 2 ? / Wat is struktuur 2 ? (1)
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QUESTION / Vraag 4
1
3
2
Diagram 3
An investigation was conducted to show the effects of increasing light intensity on the rate
of photosynthesis of a plant placed in two different concentrations of carbon dioxide. The
results are recorded in the table below. / 'n Ondersoek was gedoen om die effek van
toenemende ligintensiteit op fotosintese tempo van 'n plant in twee verskillende
konsentrasies van koolstofdioksied te bepaal.

Light Intensity / Lig
intensiteit
(arbitrary units)
(arbitrêre eenhede)
Production rate of carbohydrates during
photosynthesis (mg.hour -1 )
Produksie tempo van koolstofdioksied tydens
fotosintese (mg per uur)
In 0,05% CO2 In 0,15% CO2
1 0,9 1,5
2 1,5 2,3
3 2,0 3,1
4 2,3 3,9
5 2,4 4,3
6 2,4 4,3
7 2,4 4,3
4.1 Construct a line-graph of the production rate of carbohydrates (mg.hour -1 ),
plotting both lines (in 0,05% and 0,15% CO2) on the same set of axes. / Teken 'n
lyngrafiek van die koolstofdioksied produksie tempo (mg per uur). Teken beide lyne
(in 0,05% en 0,15%) op dieselfde assestelsel. (7)
4.2 At what light intensity does the plant reach its maximum rate of photosynthesis? /
Teen watter ligintensiteit bereik die plant sy maksimum fotosintese tempo? (1)
4.3 At what light intensity was the production rate at it’s lowest? / By watter ligintensiteit
was die produksie tempo die laagste? (1)
4.4 The rate of carbohydrate production, in both concentrations of CO2 (0,05% and 0,15%)
remained constant at light intensities of 5, 6 and 7 arbitrary units. Suggest ONE
possible explanation for this phenomenon. / Die produksie tempo van koolstofdioksied,
in beide CO2 konsentrasies bly konstant by ligintensiteite van 5, 6 en 7 arbritrêre
eenhede. Noem een moontlike verklkaring vir die verskynsel. (1)
4.5 What is the advantage to a plant of a higher carbon dioxide concentration? / Wat is die
voordeel vir die plant van 'n hoër CO2 konsentrasie? (1)
Question / Vraag 5
5.1 Root hairs are adapted for their function. Give three adaptations of a root hair
that helps it to absorb water. / Wortelhare is aangepas om hul funksie te kan
verrig. Noem drie aanpassings van 'n wortelhaar wat help vir waterabsorpsie.
(3)
5.2 What do we call the process with which water moves into the root hair? / Wat
word die prose genoem waarmee 'n wortelhaar water opneem. (1)
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Total / Totaal = 40
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