SECTION A
QUESTION 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.
1.1.1 Liquid portion of blood is known as:
A Plasma
B Hemoglobin
C Serum
D Lymph
1.1.2 Role of decomposers in an ecosystem is to…
A produce energy from sunlight
B break down dead organisms and recycle nutrients
C consume other organisms for energy
D compete for resources with other organisms
1.1.3 In the binomial system of nomenclature, the two names given to an
organism represent its:
A Phylum and Class
B Family and Order
C Species and Genus
D Genus and Species
1.1.4 What is the significance of the Cambrian explosion?
A Marks the extinction of dinosaurs.
B Time when humans evolved.
C Sudden appearance of most major animal groups.
D Formation of the supercontinent Pangaea.
2
© 2024 Tutorme LS. All rights reserved.
, 1.1.5 Fossils found in deeper layers of sedimentary rock are typically:
A Younger than fossils found in upper layers
B Older than fossils found in upper layers
C Same age as fossils found in upper layers
D Unrelated to fossils in upper layers
1.1.6 Which of the following vessels carries oxygenated blood?
A Pulmonary artery
B Right ventricle
C Pulmonary vein
D Vena cava
1.1.7 What is the correct sequence of taxonomic ranks from highest to lowest?
A Kingdom, Phylum, Class, Order, Family, Genus, Species
B Species, Genus, Family, Order, Class, Phylum, Kingdom
C Kingdom, Class, Phylum, Order, Genus, Species, Family
D Phylum, Kingdom, Class, Family, Genus, Order, Species
1.1.8 In the carbon cycle, which of the following processes returns carbon
dioxide to the atmosphere?
A Photosynthesis and decomposition.
B Nitrogen fixation and denitrification.
C Eutrophication and transpiration.
D Respiration and combustion.
1.1.9 Which kingdom includes organisms that are multicellular, heterotrophic,
and lack cell walls?
A Plantae
B Fungi
C Protista
D Animalia
3
© 2024 Tutorme LS. All rights reserved.
, 1.1.10 If the bicuspid and tricuspid valves fail to close properly, what would be
the most likely consequence?
A Blood would flow from the ventricles back into the atria during
ventricular systole.
B Blood would be unable to enter the ventricles from the atria.
C Blood would not be able to flow from the heart to the lungs.
D Heart would pump more blood than usual, leading to high blood
pressure.
(10 x 2) (20)
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 1.2.10) in your ANSWER
BOOK.
1.2.1 Organisms that lack a nucleus and does not contain organelles
1.2.2 Blood vessels where diffusion of substances occur
1.2.3 Kingdom that contains single-celled organisms that are prokaryotic
1.2.4 Process that changes liquid water into water vapour
1.2.5 Division of the Earth’s history into a series of time intervals
1.2.6 Variations that exist between individuals within a species
1.2.7 Heart chambers that receive blood
1.2.8 Animals that are able to regulate their body temperature
1.2.9 Super continent that exist 250 million years ago
(10 x 1) (10)
4
© 2024 Tutorme LS. All rights reserved.
QUESTION 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.
1.1.1 Liquid portion of blood is known as:
A Plasma
B Hemoglobin
C Serum
D Lymph
1.1.2 Role of decomposers in an ecosystem is to…
A produce energy from sunlight
B break down dead organisms and recycle nutrients
C consume other organisms for energy
D compete for resources with other organisms
1.1.3 In the binomial system of nomenclature, the two names given to an
organism represent its:
A Phylum and Class
B Family and Order
C Species and Genus
D Genus and Species
1.1.4 What is the significance of the Cambrian explosion?
A Marks the extinction of dinosaurs.
B Time when humans evolved.
C Sudden appearance of most major animal groups.
D Formation of the supercontinent Pangaea.
2
© 2024 Tutorme LS. All rights reserved.
, 1.1.5 Fossils found in deeper layers of sedimentary rock are typically:
A Younger than fossils found in upper layers
B Older than fossils found in upper layers
C Same age as fossils found in upper layers
D Unrelated to fossils in upper layers
1.1.6 Which of the following vessels carries oxygenated blood?
A Pulmonary artery
B Right ventricle
C Pulmonary vein
D Vena cava
1.1.7 What is the correct sequence of taxonomic ranks from highest to lowest?
A Kingdom, Phylum, Class, Order, Family, Genus, Species
B Species, Genus, Family, Order, Class, Phylum, Kingdom
C Kingdom, Class, Phylum, Order, Genus, Species, Family
D Phylum, Kingdom, Class, Family, Genus, Order, Species
1.1.8 In the carbon cycle, which of the following processes returns carbon
dioxide to the atmosphere?
A Photosynthesis and decomposition.
B Nitrogen fixation and denitrification.
C Eutrophication and transpiration.
D Respiration and combustion.
1.1.9 Which kingdom includes organisms that are multicellular, heterotrophic,
and lack cell walls?
A Plantae
B Fungi
C Protista
D Animalia
3
© 2024 Tutorme LS. All rights reserved.
, 1.1.10 If the bicuspid and tricuspid valves fail to close properly, what would be
the most likely consequence?
A Blood would flow from the ventricles back into the atria during
ventricular systole.
B Blood would be unable to enter the ventricles from the atria.
C Blood would not be able to flow from the heart to the lungs.
D Heart would pump more blood than usual, leading to high blood
pressure.
(10 x 2) (20)
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 1.2.10) in your ANSWER
BOOK.
1.2.1 Organisms that lack a nucleus and does not contain organelles
1.2.2 Blood vessels where diffusion of substances occur
1.2.3 Kingdom that contains single-celled organisms that are prokaryotic
1.2.4 Process that changes liquid water into water vapour
1.2.5 Division of the Earth’s history into a series of time intervals
1.2.6 Variations that exist between individuals within a species
1.2.7 Heart chambers that receive blood
1.2.8 Animals that are able to regulate their body temperature
1.2.9 Super continent that exist 250 million years ago
(10 x 1) (10)
4
© 2024 Tutorme LS. All rights reserved.
