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1.1Various options are given as possible answers to the following questions. Choose the answer and write only the letter (A to D\ next to the question number (1.1.1 to
1.1.10\the ANSWER BOOK, for example 1.1.11 D. Spermatogenesis Oogenesis Ejaculation Ovulation
1.1.2The part of the central nervous system that pro tects the human body from serious injur ies when a person steps barefoot on
1.1When a person runs race sweat ing helps to
1.1Which ONE of the following is the correct sequence in which impulses are transmitted in a reflex action
1.1.5Which ONE of the follo wing is a function of adrenalin
1.1.1Which ONE of the following processes is responsible for the production of male gametes? Life Sciences/P1 DBE/November 2015 NSC Copyright reserved
1.1The following structures are part of the male reproductive ystem (i\
1.1In seahorses the female deposits the eggs into a pouch in the male
1.1What is the independent variable in th investigation above
1.1The following factors were consider ed during the investigation: (i\ Age of the
1.110 ising temperatures on Earth s a result of the enhanced greenhouse effect ha
1.2Give the correct biological term for each of the following descriptions. Write only the term next to the question number (1.2.1 to
1.2in the ANSWER BOOK
1.2.7The part of the brain that controls the heart rate The maintenan ce of
1.3Indicate whether each of the descriptions in COLUMN I applies to A ONLY ONLY
1.3Requires the production of a large number of gametes to ensure survival of the species
1.3.2type of development in birds where the young are incapable of moving and feeding themselves
1.3.3A plant defence mechanism against pathogens Chemicals Thorns
1.3.4A gland which produce substances that are transported to target organs
1.3.5Used by plants to reduce the chances of being fed upon by herbivores Chemicals
1.4Each diagram below represent parts of the human eye.
1.4.1Give the LETTER and NAME of the part that: (a\ (b\ (c\ Contracts to change the shape of the lens Controls the amount of light that enters the eye Is protected by the conjunctiva (2\
1.4.3Study DIAGRAM and DIAGRAM . What process is responsible for the
1.5.5Wh at growth movement is represented in the diagram? Identify the stimulus labelled
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2.1The diagram below represents a part of the human ear.
2.1.1Identify part (a\ (b\ (c\
2.1Explain the result if part is blocked. (4
2.1Describe how part , the semi circular canals play
2.2The diagram below illustrates a phase in eiosis.
2.2.1Identify part: (a\ (b\ (c\ (1\ (1\
2.2.4Identify the phase illustrated above
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2.3An investigation was conducted to determine the diameter of healthy follicle in a human ovary during the menstrual cycle. A sample consisting of 50 women aged between 20 and 25
2.3.2Name TWO step that were considered during the planning of this investigation. The following results were obtained
2.4The diagram below represents the central nervous system in human.
2.4.1Identify part (a\ (b\ (c\ (1\
2.4.2State THREE functions of part (3\ (6\
2.5Describe the structure and the functioning of the autonomic nervous system. (4\ [40] Life Sciences/P140
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3.1Describe how the human body restores the carbon dioxide concentration in the blood when it rises above normal levels. (6\
3.2An investigation was conducted to compare the glucose concentration in the blood of two people, Mo and Thabiso before and after
3.2.1
3.2.2 Provide a suitable title for this graph By h ow much did Thabiso
3.2.3How long did it take Mo s blood glucose concentration level to return to its original level after in gesting the glucose solution? (1\
3.2.4(a\ (b\ Who (Thab is o or Mo\as diabetes mellitus? Give ONE observable reason for your answer to QUESTION
3.2.4(a\ (1\ (1\
3.2Explain the changes in Mo s glucose level during period (4\ (11\
3.3Read the extract below. HUNTING WILDLIFE FOR FOOD An organisation Trade Records Analysis of Fauna and Flora in Commerce (TRAFFIC\
3.3.5What is the illegal hunting and killing of animals called State ONE way in which humans destroy wildlife habitats
3.4Read the extract below. FOOD SECURITY IN SOUTH AFRICA One of the challenges in South Africa is access to food by the poor. n 2009 Statistics SA conducted a
3.4.5What is meant by food security Suggest ONE reason why food prices in rural areas are usually higher than food prices in urban areas. State TWO ways in which household farming could reduce
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