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🧬 Biology
🌍 General Knowledge
➗ Math
Puzzles & Riddles
100

This green pigment in plants absorbs sunlight.



chlorophyll


100


  1. The largest planet in our solar system.




  1. Jupiter


100


  1. The result of 7 × 8.



  1. 56


100


  1. I’m full of keys but can’t open locks.



  1. A piano (or keyboard)


200


  1. The part of a cell called the “powerhouse.”



  1. Mitochondria


200


  1. The country with the Great Wall.


china

200


  1. The square root of 144.


12

200


  1. The more you take, the more you leave behind.


foot steps

300
  • The molecule that carries genetic information.



  1. DNA


300


  1. The author of Romeo and Juliet.



  1. William Shakespeare


300


  1. The perimeter of a square with side length 5


20

300


  1. What has hands but can’t clap?



  1. A clock 


400


  1. The system that includes the heart and blood vessels.



  1. Circulatory system


400


  1. The capital of Japan.



  1. Tokyo


400


  1. The area of a triangle with base 10 and height 6.


30

400


  1. What gets wetter the more it dries?



  1. A towel


500


  1. Tiny air sacs in the lungs where oxygen enters blood.



  1. Alveoli


500


  1. The ocean west of California.



  1. Pacific Ocean


500


  1. The value of π (pi) rounded to two decimals.



  1. 3.14


500


  1. What has one eye but cannot see?



  1. A needle