Variation and Selection
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Variation and mutation
SubtopicVariation and mutation under Variation and Selection for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
Which type of reproduction leads to more variation in the offspring?
A.Asexual reproduction
B.Sexual reproduction
C.Binary fission
D.Budding
- 2.
Which of these is a likely cause of a mutation?
A.Gamma rays
B.Vitamin C
C.Nitrogen gas
D.Pure water
- 3.
A gene mutation is a change in the base sequence of:
A.Protein
B.DNA
C.Carbohydrate
D.Lipid
Download the worksheet for Variation and Selection - Variation and mutation to practice offline. It includes additional chapter-level practice questions.
Adaptive features
SubtopicAdaptive features under Variation and Selection for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
Why do some deep-sea fish have the ability to produce their own light (bioluminescence)?
A.To stay warm in the cold water
B.To attract prey or mates in the total darkness
C.To help them swim faster
D.To see through the muddy water
- 2.
Which of these features helps a frog survive in a habitat that occasionally dries up?
A.The ability to burrow into the mud and become inactive (estivation)
B.Having bright green skin
C.Laying thousands of eggs at a time
D.Having long back legs for jumping
- 3.
What adaptation allows some seeds, like those of a dandelion, to be dispersed over long distances?
A.A heavy, protective shell
B.A tasty fruit coating
C.Lightweight structures like 'parachutes' for wind travel
D.Hooks that attach to animal fur
Download the worksheet for Variation and Selection - Adaptive features to practice offline. It includes additional chapter-level practice questions.
Selection (Natural and Artificial)
SubtopicSelection (Natural and Artificial) under Variation and Selection for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
Which of these is an example of artificial selection in dogs?
A.Wolves hunting in packs
B.Breeding Labradors for their friendly nature
C.Wild dogs developing thick fur for winter
D.Puppies growing larger as they age
- 2.
How do advantageous alleles get passed on to the next generation?
A.By breathing on other individuals
B.Through reproduction
C.Through the soil
D.By eating the same food
- 3.
Why are some organisms in a population more likely to survive than others in the wild?
A.They have been trained by their parents
B.They possess alleles that give them a survival advantage
C.They choose to be faster or stronger
D.They are the oldest members of the group
Download the worksheet for Variation and Selection - Selection (Natural and Artificial) to practice offline. It includes additional chapter-level practice questions.