Porcupine Quills and Their Features

The video explores the unique characteristics of the Landak Jawa, focusing on its quills, which can detach and regrow. An experiment demonstrates the quills' sharpness and adhesive properties, which have medical applications. The video also highlights the Landak Jawa's physical traits, such as its different number of toes on front and back feet, and its ability to swim due to its hollow quills.

What unique feature do the quills of the Javanese porcupine have?

• They glow in the dark.

• They are covered in poison.

• They are made of metal.

• They are hollow and have their own muscles.

How long does it take for a porcupine's quills to regrow after they fall off?

• Two to four weeks

• One week

• One month

• Six months

What items were used in the experiment to test the sharpness of the porcupine's quills?

• Apple, toothpick, and porcupine quill

• Orange, needle, and porcupine quill

• Orange, skewer, and porcupine quill

• Banana, skewer, and porcupine quill

What was the result when the porcupine quill was used in the experiment?

• It melted.

• It broke into pieces.

• It did not penetrate the meat.

• It made the meat stick to it.

What feature of the porcupine quill allows it to stick to objects?

• Its hollow structure

• Its sharp tip

• Its weight

• Its fine fibers at the tip

How is the porcupine quill's characteristic used in the medical field?

• To develop surgical scissors

• To make bandages

• To design stethoscopes

• To create needles that can close wounds perfectly after surgery

What is the difference in the number of toes between the front and back feet of the Javanese porcupine?

• Front feet have four toes, back feet have five

• Front feet have five toes, back feet have four

• Both front and back feet have five toes

• Both front and back feet have four toes

What does the porcupine use its sharp claws for?

• To climb trees

• To dig for food

• To defend itself

• To swim faster

Why can the porcupine's quills float on water?

• Because they are very light

• Because they are hollow

• Because they are made of wood

• Because they are filled with air

What is the English name for the Javanese porcupine?

• Java hedgehog

• Sunda porcupine

• Sunda pangolin

• Java squirrel