Life Sciences Grade 11 March Test 2023 Paper & Memo

) KWAZULU-NATAL PROVINCE EDUCATION REPUBLIC OF SOUTH AFRICA NATIONAL SENIOR CERTIFICATE MARKS: 50 TIME: 1 hour This question paper consists of 10 pages.

Downloaded from hlayiso.com Downloaded from Stanmorephysics.com Life sciences Grade 11 N March 2023 Common Test INSTRUCTIONS AND INFORMATION Read the following instructions carefully before answering the questions. 1. Answer Attthe questions. 2. Write ALE;the answers in the ANSWER BOOK. 3. Start the answers to each question at the top of a NEW page. 4. Number the answers correctly according to the numbering system used in this question paper. 5. Present your answers according to the instructions of each question. 6. Do ALL drawings in pencil and label them in blue or black ink. 7. Draw diagrams, tables or flow charts only when asked to do so. 8. The diagrams in this question paper are NOT necessarily drawn to scale. 9. Do NOT use graph paper. 10. You may use a non-programmable calculator, protractor and a compass. 11. Write neatly and legibly. Ce en eee

Downloaded from hlayiso.com Life scientevetgared from S tanjgor ephy sics.com March 2023 Common Test SECTION A QUESTION 1 1.1 Various options are provided as possible answers to the following questions. Choose theyanswer and write only the letter (A to D) next to the question number (21.1 to 1.1.3) in the ANSWER BOOK, for example 1.1.4 D. 205) 1.1.1 Moss plants live in moist/ damp conditions because... water is needed for fertilisation moss plants have conducting tissues moss plants produce spores water is not needed for fertilisation DOB 1.1.2 Pathogen that cause rabies... @® Virus B Protozoan C Bacterium D_sVirus 1.1.3. The phylum Porifera which includes sponges is the least advanced of multicellular animals Which of the following is/are true for phylum Porifera? (i) Coelomate x 4 (ii) | Asymmetrical (iii) | No cephalisation (iv) Diploblastic x 4 A (i) and (ii) ra (i), (ii), (iii) and (v) (ii) and (iii) D (ii) and (iv) (3x2) (6) Copyright reserved Please turn over

Downloaded from hlayiso.com Downloaded from Stanmorephysics.com Life sciences Grade 11 NSC March 2023 Common Test 1.2 Give the correct biological term for each of the following descriptions. Write only the term next to the question number (1.2.1 to 1.2.4) in the ANSWER BOOK. 1.2.1 RAesphylum of all animals with a vertebral column in adults 1.2.2 |The transfer of pollen from an anther to the stigma 14.2.3. The type of reproduction in plants that produces offspring’s with identical genetic composition hols (3x1) (3) 1.3 Indicate whether each of the descriptions in COLUMN | applies to A ONLY, B ONLY, BOTH A AND B or NONE of the items in COLUMN II. Write A only, B only, both A and B or none next to the question number (1.3.1 to 1.3.5) in the ANSWER BOOK. COLUMN | COLUNN II 1.3.1 Allanimals in this phylum are sessile | A: Porifera Cee, B: Annelida 1.3.2 Animals with a radial symmetry / A: Arthropoda Ro? |B: Chordata (2 x 2) (4) Dianna turn quer

1.4 The diagram below shows one of the phyla you studied. 1.4.1 1.4.2 Copyright reserved Downloaded from hlayiso.com Life sciddeopvGfaiadted From Stanworephysics.com March 2023 Common Test Identify the kingdom to which the above organism belongs Give the LETTER and NAME of the part that: (a) anchors fungus to substrate (b) provides branched horizontal covering on substrate (c) produces mature spores TOTAL SECTION A Please turn over (1) (2) (2) (2) (7) 20

Life sci Qalgaded from Stanfror ephy: Sics. com Downloaded from hlayiso.com March 2023 Common Test SECTION B QUESTION 2 2.1 The diagram_below represents a flower. 2.1.1 Name the agent of pollination for the above flower 2.1.2 List THREE characteristics of the flower that makes it adapted for the agent mentioned in QUESTION 2.1.1 2.1.3 Name ONE advantage of asexual reproduction in plants 2.1.4 Explain why seedless vascular plants are able to grow taller than non-vascular plants 2.1.5. Give TWO adaptation of angiosperms that makes them survive on Convriaht reserved land Please turn over (1) (3) (1) (2) (2) (9)

Downloaded from hlayiso.com Life scieayGlaradted from Stannsorephysics.com March 2023 Common Test 2.2 Malaria causes over 400 000 deaths each year globally. 2.2.1 re the protozoan that causes malaria 2.2.2 {Name the vector that spreads malaria 2.2.3 List TWO symptoms experienced by people with malaria 2.2.4 Explain why malaria is only found in certain regions of Africa TOTAL QUESTION 2 Copyright reserved Please turn over (1) (1) (2) (2) (6) 15

Downloaded from hlayiso.com Downloaded from Starfnorephysics.com Life sciences Grade 11 QUESTION 3 March 2023 Common Test 3.1 Grade 11illearners conducted an investigation to determine the optimum temperatuiréifor growth of bread mould. The procedure for the investigation: FOUR plastic containers with lids were used Containers were labelled A, B, C and D A slice of bread was placed in each container 20ml of water was sprinkled over each slice. CONTAINER A: was placed in a fridge( cold) CONTAINER B: was placed in a cupboard (cool) CONTAINER C: was kept at room temperature (mild) CONTAINER D: was kept on a window sill (warm) Containers were left in their respective conditions for a week After a week the slices of bread were removed from the containers and placed next to each other. e Learners repeated their investigation twice The table below shows the results of the investigation Container Growth of bread mould (%) A 5 B 25 Cc 50 D 75 3.1.1 Identify the: (a) (b) Dependent variable Independent variable 3.1.2 Give ONE reason why the results at the end of this investigation may be considered reliable 3.1.3 State ONE factor that was kept constant during the inyestigation Canvriaht racaniad Please turn over (1) (4)

Downloaded from hlayiso.com Life scbheswiciercded from Stanserephysics.com March 2023 Common Test 3.2 Complete the table below showing comparison in characteristics of the FOUR plant groups. Writeggown only the number of the question and the answer. Characteristic | Bryophytes | Pteridophytes | 3.2.1 Angiosperms Vasculak—> No vascular | Has vascular | Has vascular | Has vascular tissues tissues tissues tissues tissues Leaves, stem 3.2.2 Has true roots, | Has true 3.2.3 and roots Stem and roots, stem leaves And leaves Seeds No seeds 3.2.4 Produces 3.2.5 cones with seeds Dependence Depends on | Depends on Does not 3.2.6 on water water for water for depend on fertilisation _| fertilisation Water for fertilisation Copyright reserved Please turn over (6)

Downloaded from hlayiso.com _ Downloaded from Stantorephysics.com Life sciences Grade 11 NSC March 2023 Common Test 3.3 The phylogenetic tree shows animal diversity Annelida Arthropod Chordata Porifera Cnidaria) Platyhelminthes S}BWOIB0D ayewojaooy A Ancestral protist (2) (1) 3.3.1 Identify TWO phyla with a coelom 3.3.2 | How many phyla are shown in the table above 3.3.3 Explain the advantage of having a through-gut (2) (5) TOTAL QUESTION 3 15 GRAND TOTAL 50 Canurinht racanied

Downloaded from hlayiso.com Downloaded from Stanmorephysics.com KWAZULU-NATAL PROVINCE EDUCATION REPUBLIC OF SOUTH AFRICA **Corrections to MEMO at End ** MARKS: 50 TIME: 1 hour This marking guideline consists of 5 pages

Downloaded from hlayiso.com Downloaded from Stanmorephysics.com 1 Life sciences grade 11 2023 SECTION A QUESTION 1.1 1. 1 1.1.3 1.2 1.2.1 1.2.2 1.2.3 1.3 1.3.1 1.3.2 1.4 1.4.1 1.4.2 Copyright reserved AVY Cvv Cvv Chordatav Pollination’ Asexual reproduction’ A only¥v NONEY Y Fungiv (a) Dv -rhizoidsv (b) Cv-stolonv (c) AY -sporangiumyY March Marking Guideline (3 x 2) (1X3) (2x 2) TOTAL MARKS SECTION A: please turn over (6) (3) (4) (1) (2) (2) (2) (7) 20

Downloaded from hlayiso.com Downloaded from Stanmorephysics.com 1 Life sciences grade 11 2023 SECTION B QUESTION 2 2.1 March Marking Guideline 2.1.2 | ollen grains are light, smooth and dry to allow them to floaty. = Anthers are attached to their filaments in such a way that they are easily moveable with windy. - Stigma is large, feathery and sticky to trap as much pollen grainsv. - Flowers do not have scent and do not have nectarv - Flowers do not have brightly coloured petalsv ( mark first THREE only) 2.1.3 - A large number of offspring’s are rapidly producedv - Offspring are genetically identical, if parent is well adapted to the environment, so will be the new plant. “ - New plants produced relatively quickly~ - Agents of pollination and seed dispersal not requiredv (mark any ONE correct answer) 2.1.4 -They have conducting tissuesY ( xylem and phloem) - plants are able to transport water and minerals to greater heightsv 2.1.5 - Leaves have cuticlev - Angiosperms have true leaves, stems and roots” - Embryo is enclosed in a seedv to prevent drying out - Has conducting tissuesv ( xylem and phloem) ( mark first TWO only) Copyright reserved please turn over (1) (3) (1) (2) (2) (9)

Downloaded from hlayiso.com Downloaded from Stanmorephysics.com 1 Life sciences grade 11 2023 March Marking Guideline 2.2 2.2.1 Plasmodiumv (1) (1) 2.2.2 Anophele mosquitoY 2.2.3 (2) - vomiting’ ( mark first TWO only) 2.2.4 Most African countries experience high temperaturesvY which allow (2) the Anopheles to thrivev /multiply easily (6) TOTAL QUESTION 2 (15) QUESTION 3 3.1 3.1.1 (a) growth of bread mouldY (1) (b) temperaturev (1) 3.1.2 Learners repeated the investigationY (1) 3.1.3 Amount of water sprinkled on each bread (20ml)” (1) (4) i Copyright reserved please turn over

3.2 3.3 Downloaded from hlayiso.com Downloaded from Stanmorephysics.com 1 Life sciences grade 11 2023 3.2.1 3.2.2 3.2.3 3.2.4 3.2.5 3.2.6 3.3.1 3.3.2 3.3.3 March Marking Guideline Gymnosperm ¥ lo true stems, leaves and roots (thallus)” e stems, leaves and rootsY | v No seeds Seed enclosed in a fruity Does not depend on water for fertilisation of gametesv - Annelida ¥ - Arthropoda v - Chordatav ( mark first TWO only) 6Y - Allows animals to consume food through the mouth and excrete waste through the anusY - Different regions in the digestive tract become specialisedv to improve efficiency” - Digestion is a continuous processY that can continue during ingestion and egestionY - Due to the presence of a coelomy food can move by peristalsis through the digestive tract, independently of the muscles in the body wallv ( mark any correct TWO) TOTAL QUESTION 3 TOTAL MARKS Copyright reserved please turn over (2) (5) 15 50

Downloaded from hlayiso.com Downloaded from Stanmorephysics.com LFSC MARCH TEST GRADE 11 2023 MEMORANDUM CORRECTIONS SECTION A nar QUESTION f, 11 ~4 al T =} ti, 1.1.2 AvVIC Rabies is caused by virus 1.2 1.2.3 Asexualv/vegetative reproduction SECTION B QUESTION 2 2.1 2.1.2 The requested learners to LIST the characteristics of the flower NOT explaining how they are adapted. - No scent or nectary - No brightly coloured petals and small - large antherV - produce enormous/large amount of polleny - lack calyx and corollay - stigmas are long and feathery - borne on flexible stalksV - Pollen grains are light, smooth and dryV (MARK THE FIRST THREE) 2.2 2.2.2 Female Anopheles mosquitoV 2.2.4 African countries have high/warm temperaturesv/humid/moist which allow the Anopheles to thrivev/multiply easily. ions/high rainfall QUESTION 3 o— 3.1 3.1.2 The investigation was repeated twiceV