Download and practise with this ZIMSEC O-Level Biology Paper 1 June 2020 question paper. Useful for exam revision, past paper practice, and preparation in Zimbabwe.
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This is the ZIMSEC O-Level Biology question paper for Paper 1 from June 2020. Use it for exam practice under timed conditions. The paper code is 4025/1. Time allowed: 1 hour.
# ZIMBABWE SCHOOL EXAMINATIONS COUNCIL <br> General Certificate of Education Ordinary Level
**BIOLOGY**<br>**PAPER 1 Multiple Choice**
**JUNE 2020 SESSION**
1 hour
Additional materials:
Multiple Choice answer sheet
Soft clean eraser
Soft pencil (type B or HB is recommended)
Mathematical tables/ Electronic calculator (optional)
TIME 1 hour
### INSTRUCTIONS TO CANDIDATES
Do not open this booklet until you are told to do so.
Write your name, Centre number and candidate number on the answer sheet in the spaces provided unless this has already been done for you.
There are forty questions in this paper. Answer all questions. For each question, there are four possible answers, \(\mathbf{A}, \mathbf{B}, \mathbf{C}\) and \(\mathbf{D}\). Choose the one you consider correct and record your choice in soft pencil on the separate answer sheet.
Read very carefully the instructions on the answer sheet.
### INFORMATION FOR CANDIDATES
Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet.
## Question 1
In case of a fire in the laboratory, learners should
A run out of the laboratory.
B shout to warn others.
C use windows as exits.
D leave in a single file.
## Question 2
The diagrams show some warning symbols used in a laboratory. Which symbol, \(\mathbf{A}, \mathbf{B}, \mathbf{C}\) or \(\mathbf{D}\), warns of hot surfaces?
## Question 3
The branch of Biology associated with brewing is
A botany.
B biotechnology.
C cytology.
D zoology.
## Question 4
The diagram shows the structure of a monossacharide.
<img class="imgSvg" id = "mqshchhm4spnketrq1j" src="https://ocr.unopasa.com/p/ocr_assets/3648e9846b973dc18c863bb558b7072e0a1a50732bc98b57968852721c921e98.svg"/>
The monossacharide is
A galactose.
B fructose.
C glucose.
D lactose.
## Question 5
Which is not a use of water in living organisms?
A catalyst
B habitat
C reagent
D solvent
## Question 6
Animals store carbohydrates in the form of
A starch.
B sucrose.
C glucose.
D glycogen.
## Question 7
Which part of a plant cell is freely permeable?
A cell wall
B cell membrane
C cytoplasm
D vacuole
## Question 8
The diagram shows a sperm cell.
Which part, \(\mathbf{A}, \mathbf{B}, \mathbf{C}\) or \(\mathbf{D}\), produces the most energy?
## Question 9
Which statement about enzymes is not true?
A enzymes are protein in nature
B enzymes are substrate specific
C enzymes work best at optimum temperatures
D enzymes are broken down after the reaction
## Question 10
Some plant stems are negatively geotropic. This means they grow
A towards gravity.
B towards light.
C away from gravity.
D away from light.
## Question 11
The diagram is a summary of the fate of products of photosynthesis.
X represents
A glycogen.
B glycerol.
C glucagon.
D glucose.
## Question 12
The leaves of a plant were exposed to radioactive carbon dioxide during daylight. Which part of the stem, \(\mathbf{A}, \mathbf{B}, \mathbf{C}\) or \(\mathbf{D}\), would contain radioactive carbon?
## Question 13
After fertilisation in plants, the ovary
A remains unchanged.
B becomes the seed.
C becomes the fruit.
D shrivels and falls.
## Question 14
Which mineral deficiency causes chlorosis in plants?
A manganese
B nitrogen
C phosphorus
D potassium
## Question 15
Which condition would cause a plant to wilt most rapidly?
A low humidity
B low light intensity
C low temperature
D low wind speed
## Question 16
The diagram shows a section of a dicotyledonous seed. Which part, \(\mathbf{A}, \mathbf{B}, \mathbf{C}\) or \(\mathbf{D}\), develops into the root?
## Question 17
The role of rennin in digestion is to
A emulsify fats.
B neutralise acids.
C destroy bacteria.
D clot milk protein.
## Question 18
The diagram shows a summary of carbohydrate metabolism.
Which hormone is responsible for regulating process \(\mathbf{X}\) ?
A insulin
B glycagon
C thyroxine
D adrenaline
## Question 19
The diagram shows the human female reproductive system. In which part, \(\mathbf{A}, \mathbf{B}, \mathbf{C}\) or \(\mathbf{D}\), does fertilisation occur?
## Question 20
The kidney is not responsible for
A urine formation.
B urea formation.
C pH regulation.
D reabsorption.
## Question 21
The diagram illustrates the human circulatory system.
The arrows labelled \(\mathbf{V}\) and \(\mathbf{W}\) represent the
A aorta and vena cava respectively.
B vena cava and aorta respectively.
C pulmonary artery and pulmonary vein respectively.
D pulmonary vein and pulmonary artery respectively.
## Question 22
The graphs show change in blood glucose concentration against time. Which graph, \(\mathbf{A}, \mathbf{B}, \mathbf{C}\) or \(\mathbf{D}\), is likely to represent …