Activity of text interpretation, aimed at students in the fifth year of elementary school, about the teeth of rodents and the beak of birds. Why do they grow nonstop? Let's find out? So, read the text carefully! Then answer the various interpretative questions proposed!
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The answer is simple: to make everyday tasks easier. Like this? Follow the agouti's example. To feed, she needs to break open the very hard shell of her favorite dish, Brazil nuts. Performing this and other tasks, your front teeth – the incisors – wear out a lot. Because these teeth are even made to gnaw, gnaw, and gnaw on the hardest surfaces as quickly as they are worn down, they grow nonstop. In addition, the front of these teeth has a layer of reinforced enamel. The back is much softer and works like pliers.
These ingenious adaptations allowed rodents the skills of digging, climbing, cutting branches and hard seeds. The North American beaver is another example of a strong-toothed rodent: these animals are able to cut down trees and build small dams using only their powerful incisors. Thus, they can rebuild the environment around them, similar to humans.
rodents, OK! But do birds' beaks grow nonstop too? They grow, yes! Birds' beaks are mainly formed by a special type of bone called a pneumatic. Pneumatic bones are much lighter than the bones found in us, mammals, and other animals. All this lightness is needed to provide balance during the flight. The beak bones are covered with a layer made of keratin, the same material that makes up our nails. This cover is known by researchers as a ranfoteca and serves to protect, give shape and color to the beak. It continually grows at a very slow pace. However, as the nozzle is constantly used for feeding and various other functions, this cover will wear out and its growth compensates for this wear.
Macaws, parrots and parakeets are among the animals that have one of the highest beak growth rates among all birds. These birds feed mainly on hard seeds and often use their beaks as hands, which move between the branches of trees.
Salvatore Siciliano and Luciano M. Lime.
“Ciência Hoje das Crianças” magazine. Edition 262.
Available in: .
Question 1 - Identify the purpose of the text:
( ) explain something.
( ) tell a story.
( ) make a recommendation.
Question 2 - In the passage “To eat, she needs to open the very hard skin of her favorite dish, Brazil nuts.”, the authors of the text refer to:
Question 3 - In "How these teeth were even made to gnaw, gnaw and gnaw the hardest surfaces as quickly as they are worn away, they grow non-stop.”, the fact underlined:
( ) is the cause of another.
( ) is the condition of another.
( ) is the consequence of another.
Question 4 – In the excerpt “[…] they are able to cut trees and build small dams using only their powerful incisors.”, the authors reveal skills:
( ) of the agouti.
( ) of North American beavers.
( ) of macaws, parrots and parakeets.
Question 5 - Below, underline the term that indicates mode:
“So they can rebuild the environment around them […]”
Question 6 – In the segment “The bones of the beak are covered by a layer formed of keratin […]”, the authors of the text:
( ) opine.
( ) narrate.
( ) describe.
Question 7 – In the fragment "All this lightness is necessary for provide balance during the flight.”, the highlighted word establishes a relationship of:
( ) direction.
( ) destiny.
( ) goal.
Per Denyse Lage Fonseca
Graduated in Languages and specialist in distance education.
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