Primary 4
Name:_________________________ Date:_______________


Comprehension (5.3)

Read the passage and answer the questions.

The Insect World

Insects are the most successful life-form on Earth. More than half of
all life on our planet belongs to insects. Insects have more than one million
different species. This is much more than all other species of animals and
plants put together. Insects have been on this planet for more than 350
million years. Even before the appearance of dinosaurs.
The millions of insects are grouped and named using a system that
was invented by a Swede, Carl Linnaeus, about 250 years ago. This
naming system uses Latin names so that it can be understood anywhere
on Earth. The basic insect class is the species. Several species make a
genus, several genuses make a family. Higher up the grouping of family
comes the order, then the class and finally the phylum. All insects within
the same species can mate and reproduce.
Most insects have two kinds of eyes. The simple eyes which can only
sense the presence of light. The compound eyes which have thousands of
lenses and the ability to receive thousands of different images.
Many small creatures like bugs, spiders, ticks and centipedes are
often mistaken for insects. These look like insects but they are different.
The easiest to spot an insect is to count the body parts and legs. Insects
have three body parts and six legs.

1. How many species of insects are there?
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2. Who invented the insect naming system and when?
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3. What is the language used for naming insects? Why was this language chosen?
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4. Name three small creatures that are often mistaken as insects?
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5. How would you spot an insect?
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