Biology
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Cell Structure and Organization
SubtopicCell Structure and Organization under Biology for Grade 8 IGCSE.
Preview questions (no answers)
- 1.
Which of the following is a function of the cell membrane?
A.Making food by photosynthesis
B.Controlling the movement of substances into the cell
C.Providing a rigid structure
D.Storing all the cell's waste
- 2.
Which cell type is irregular in shape and can change shape easily?
A.Palisade cell
B.Root hair cell
C.Animal cell
D.Bacterial cell
- 3.
In the hierarchy of organization, which comes directly after tissue?
A.Cell
B.Organ
C.Organ system
D.Organism
Download the worksheet for Biology - Cell Structure and Organization to practice offline. It includes additional chapter-level practice questions.
Photosynthesis and Plant Growth
SubtopicPhotosynthesis and Plant Growth under Biology for Grade 8 IGCSE.
Preview questions (no answers)
- 1.
During the day, which gas is a plant most likely taking in for photosynthesis?
A.Oxygen
B.Carbon dioxide
C.Nitrogen
D.Argon
- 2.
What provides the carbon atoms found in a glucose molecule produced by a plant?
A.Water
B.Soil nutrients
C.Carbon dioxide
D.Sunlight
- 3.
Which of these is a correct description of the palisade mesophyll cells?
A.Tightly packed and full of chloroplasts
B.Loosely packed with many air spaces
C.Circular and containing no nucleus
D.Located at the very bottom of the leaf
Download the worksheet for Biology - Photosynthesis and Plant Growth to practice offline. It includes additional chapter-level practice questions.
Human Reproduction and Puberty
SubtopicHuman Reproduction and Puberty under Biology for Grade 8 IGCSE.
Preview questions (no answers)
- 1.
What is the purpose of the muscular walls of the uterus?
A.To produce eggs
B.To contract and push the baby out during birth
C.To filter the mother's blood
D.To produce testosterone
- 2.
Which organ is responsible for producing the female sex cells?
A.Uterus
B.Ovary
C.Cervix
D.Vagina
- 3.
In the menstrual cycle, if day 1 is the start of the period, on which day approximately does an egg get released?
A.Day 1
B.Day 7
C.Day 14
D.Day 28
Download the worksheet for Biology - Human Reproduction and Puberty to practice offline. It includes additional chapter-level practice questions.
Inheritance and DNA
SubtopicInheritance and DNA under Biology for Grade 8 IGCSE.
Preview questions (no answers)
- 1.
Which molecule is the main component of chromosomes?
A.Glucose
B.DNA
C.Hemoglobin
D.Insulin
- 2.
How many pairs of chromosomes does a typical human cell contain?
A.46 pairs
B.23 pairs
C.12 pairs
D.2 pairs
- 3.
Which of these traits cannot be passed down to offspring?
A.Curly hair
B.Green eyes
C.A broken arm
D.Skin color
Download the worksheet for Biology - Inheritance and DNA to practice offline. It includes additional chapter-level practice questions.
Ecosystems, Food Webs, and Adaptation
SubtopicEcosystems, Food Webs, and Adaptation under Biology for Grade 8 IGCSE.
Preview questions (no answers)
- 1.
Which of the following describes the term 'interdependence' in an ecosystem?
A.Organisms living completely alone
B.Organisms relying on each other for survival
C.The study of rocks and soil
D.The way the sun creates light
- 2.
What do we call a consumer that eats only meat?
A.Herbivore
B.Carnivore
C.Omnivore
D.Producer
- 3.
Webbed feet are an adaptation most commonly found in animals that live in which environment?
A.Deserts
B.High mountains
C.Aquatic or wetland environments
D.Deep caves
Download the worksheet for Biology - Ecosystems, Food Webs, and Adaptation to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
Which of these is a major cause of liver cirrhosis?
A.Excessive sugar intake
B.Lack of exercise
C.Long-term alcohol abuse
D.High salt intake
- 2.
Which of the following is an example of a non-communicable disease?
A.Diabetes
B.Chickenpox
C.Measles
D.The common cold
- 3.
The immune system is the body's defense against:
A.Nutrient deficiencies
B.Infectious diseases
C.Physical injuries
D.Inherited disorders
Download the worksheet for Biology - Health and Disease to practice offline. It includes additional chapter-level practice questions.