INSIKAZI CIRCUIT
GRADE 12
LIFE SCIENCES PRE TRIAL
PAPER ONE
AUGUST 2021
MARKS: 150
TIME: 2h30 minutes
This question paper consists 16 of pages.
Copyright reserved Please turn over
,Life Sciences/ Grade 12 2 INSIKAZI/AUGUST 2021
NSC
INSTRUCTIONS AND INFORMATION
Read the following instructions carefully before answering the questions.
1. Answer ALL the questions.
2. Write ALL 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 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 must use a non-programmable calculator, protractor and a compass,
where necessary.
11. Write neatly and legibly.
Copyright reserved
, Life Sciences/ Grade 12 3 INSIKAZI/AUGUST 2021
NSC
SECTION A
QUESTION 1
1.1 Various options are provided as possible answers to the following questions.
Choose the correct answer and write only the letter (A to D) next to the
question number (1.1.1 to 1.1.9) in the ANSWER BOOK, for example 1.1.4 D.
1.1.1 The part of the female reproductive system where fertilisation takes
place is called the …
A vagina.
B ovary.
C Fallopian tube.
D cervix.
1.1.2 Which part of the male reproductive system secretes testosterone?
A Cowper's glands
B Prostate gland
C Testis
D Epididymis
1.1.3 Which ONE of the following refers to development in some birds
where the eggs hatch outside the body and the young are born
immobile and totally dependent on its parents?
A Vivipary and precocial development
B Ovipary and altricial development
C Vivipary and altricial development
D Ovipary and precocial development
1.1.4 A function of the placenta is to …
A transport waste from mother to foetus.
B form the chorion.
C secrete progesterone.
D secrete the fluid that surrounds the foetus.
1.1.5 During periods when the temperature is low, …
A the thyroxin levels are expected to be low.
B sweating increases.
C the blood vessels to the skin dilate.
D the ADH levels are expected to be low.
Copyright reserved
GRADE 12
LIFE SCIENCES PRE TRIAL
PAPER ONE
AUGUST 2021
MARKS: 150
TIME: 2h30 minutes
This question paper consists 16 of pages.
Copyright reserved Please turn over
,Life Sciences/ Grade 12 2 INSIKAZI/AUGUST 2021
NSC
INSTRUCTIONS AND INFORMATION
Read the following instructions carefully before answering the questions.
1. Answer ALL the questions.
2. Write ALL 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 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 must use a non-programmable calculator, protractor and a compass,
where necessary.
11. Write neatly and legibly.
Copyright reserved
, Life Sciences/ Grade 12 3 INSIKAZI/AUGUST 2021
NSC
SECTION A
QUESTION 1
1.1 Various options are provided as possible answers to the following questions.
Choose the correct answer and write only the letter (A to D) next to the
question number (1.1.1 to 1.1.9) in the ANSWER BOOK, for example 1.1.4 D.
1.1.1 The part of the female reproductive system where fertilisation takes
place is called the …
A vagina.
B ovary.
C Fallopian tube.
D cervix.
1.1.2 Which part of the male reproductive system secretes testosterone?
A Cowper's glands
B Prostate gland
C Testis
D Epididymis
1.1.3 Which ONE of the following refers to development in some birds
where the eggs hatch outside the body and the young are born
immobile and totally dependent on its parents?
A Vivipary and precocial development
B Ovipary and altricial development
C Vivipary and altricial development
D Ovipary and precocial development
1.1.4 A function of the placenta is to …
A transport waste from mother to foetus.
B form the chorion.
C secrete progesterone.
D secrete the fluid that surrounds the foetus.
1.1.5 During periods when the temperature is low, …
A the thyroxin levels are expected to be low.
B sweating increases.
C the blood vessels to the skin dilate.
D the ADH levels are expected to be low.
Copyright reserved
