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2021 Megaquiz!

By David, 1 January 2021 Quiz

Here’s our megaquiz for the year! Below are 10 questions picked from every quiz we wrote in 2020. If you want more questions, just hit refresh and we’ll grab you another 10. Good luck!


Well done! You have some real science smarts!

Oh no! Why not try again by refreshing the page – you’ll get different questions!

#1. What dies during apoptosis?

Apoptosis is the body’s way of removing unwanted cells.

#2. The kakapo is a famous flightless bird from New Zealand, but what type of bird is it?

The kakapo is the only species of flightless parrot in the world.

#3. Which of the following pet birds is NOT native to Australia?

Canaries come from, and are named after, the Canary Islands off the coast of Africa.

#4. Where would you find a mangrove forest?

Mangroves are shrubs and trees that grow in shallow water on the coast.

#5. What is the heaviest species of bird alive today?

Ostriches can weigh more than 140 kilograms!

#6. Turritopsis dohrnii is an animal that turns back into a baby when it gets too old, but what kind of animal is it?

Turritopsis dohrnii is commonly known as the immortal jellyfish, and it can turn back into a polyp when it gets too old.

#7. How many different types of bitter taste receptors are there in humans?

There are 25 different human bitter receptors recorded in the bitterDB database. But not all humans have all 25 receptors!

#8. How many northern white rhinos are alive today?

There are only two northern white rhinos left, named Najin and Fatu, and both are female.

#9. What would you use to treat a case of myopia?

Myopia is another name for short-sightedness.

#10. Which is bigger – Pluto or the Moon?

The Moon is bigger. It’s about 3500 kilometres across, while Pluto is only 2400 kilometres wide.

Was I right?

If you’re after more fun science for kids, subscribe to Double Helix magazine!


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  1. Hey, I got 9 right, missed moons of Pluto, but you gave me an 8/10. Looks like you program did not account for the extra 5 question, just the first five since I aced the last 5.

    1. Hi Terry,
      Thanks for the feedback! Sadly, the quiz changes every time you load it, so I can’t get the same bug to appear. But let us know if it happens again, and I’ll dig a bit deeper.

      If you want another quiz, just press f5 on the quiz page to refresh the page.

  2. Hi David,
    I thought there might be a larger problem, though very minro,` and you would get a number of responses so I wanted to be first. :-} All is good.

    Thank you


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