Life Science 2023 Paper1 November SECTION A 1.1

1.1
Various options are provided as possible answers to the following questions.
Choose the answer and write only the letter (A–D) next to the question
numbers (1.1.1 to 1.1.10) in the ANSWER BOOK, e.g. 1.1.11 D.
This is how your instructions will be in the exam. For this exam practice, just select the correct answer.
1.1.1
Which ONE of the following parts controls the amount of light
entering the eye by influencing the size of the pupil?

1.1.2
The function of the umbilical vein is to transport …

1.1.3
The diagram below represents the events that occur during the
homeostatic control of blood glucose.

Which ONE of the following represents gland X and hormone Y?

1.1.4
Which ONE of the following is CORRECT regarding the
homeostatic control of the carbon dioxide concentration in the
blood?

1.1.5
The plant hormones that can be used to kill broad-leaved weeds
are …

1.1.6
A girl looking at a car moving away from her is able to focus on the
letters on the number plate.
Which ONE of the following changes occurred in her eyes?

1.1.7
One of the characteristics of a sperm that causes it to move faster
is the …

1.1.8
In a person suffering from long-sightedness, …

1.1.9
The graph below shows the results of an investigation done to
determine the effect of light intensity on the size of the pupil.

Which ONE of the following statements is a conclusion that can be
made from the results?

1.1.10
The following is a list of events that occur in the female body:
(i) Puberty
(ii) Ovulation
(iii) Development of the corpus luteum
(iv) Oogenesis
(v) Thickening of the endometrium
Which ONE of the following is a combination of events that are
influenced by LH (luteinising hormone)?