Biological Sciences Level 7 Pre-Test (2)

Which of the following is a similarity between all living organisms?

• They all have a backbone.

• They all require energy to survive.

• They all have wings.

• They all live in water.

What is the primary purpose of a dichotomous key in biological classification?

• To measure the size of organisms.

• To identify and classify organisms.

• To determine the age of fossils.

• To track the migration patterns of animals.

Which of the following groups of organisms is classified as vertebrates?

• Insects

• Fish

• Molluscs

• Bacteria

Which of the following is a difference between plants and animals?

• Plants can move from place to place.

• Animals can perform photosynthesis.

• Plants have cell walls, animals do not.

• Animals have chloroplasts, plants do not.

What is the main advantage of using a dichotomous key?

• It provides detailed information about the habitat of organisms.

• It simplifies the process of identifying unknown organisms.

• It helps in measuring the growth rate of organisms.

• It tracks the evolutionary history of organisms.

Which of the following is an example of a homologous structure?

• The wings of a bat and the wings of a butterfly.

• The fins of a fish and the wings of a bird.

• The forelimbs of a human and the forelimbs of a cat.

• The eyes of a human and the eyes of an octopus.

Which of the following is NOT a characteristic used to classify organisms?

• Physical structure

• Genetic makeup

• Behavioural traits

• Colour preference

What is the main difference between prokaryotic and eukaryotic cells?

• Prokaryotic cells have a nucleus, eukaryotic cells do not.

• Eukaryotic cells have a nucleus, prokaryotic cells do not.

• Prokaryotic cells are larger than eukaryotic cells.

• Eukaryotic cells are always unicellular.

Which of the following best describes the term "biodiversity"?

• The number of different species in a given area.

• The total population of a single species.

• The genetic variation within a species.

• The number of ecosystems in a region.

Which of the following tools is commonly used to classify plants and animals?

• Microscope

• Dichotomous key

• Thermometer

• Barometer