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Amazing Plant Records Quiz: Tallest Trees, Giant Flowers and More!

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Amazing Plant Records Quiz: Tallest Trees, Giant Flowers and More!

About this quiz

Plant records quiz: 25 questions about the tallest trees, biggest flowers, oldest seeds and most poisonous plants. 🌳

❓ IN THIS QUIZ

  • Which is the tallest kind of tree?
  • How heavy is the world's heaviest pumpkin?
  • One artist grafted a single tree to grow how many kinds of fruit?
  • How old was the oldest seed ever sprouted into a tree?

💬 How many did you get right? Tell us your score in the comments. Which plant record amazed you most?

How to play

  1. Read the question and look at the pictures.
  2. Pick your answer before the timer runs out (or switch the timer off).
  3. See if you were right and read the fun fact.
Answers and fun facts (spoilers!)
  1. Let's explore record-breaking plants! Which is the tallest kind of tree?
    Coast redwood
    The tallest known tree, a coast redwood nicknamed Hyperion, is about 116 m tall!
  2. Which kind of tree is the biggest by volume?
    Giant sequoia
    Giant sequoias are the most massive trees on Earth!
  3. Where is the tree with the thickest trunk in the world?
    Mexico
    The Árbol del Tule in Mexico has a trunk about 42 m (138 ft) around!
  4. Which kind of tree can live for nearly 5,000 years?
    Bristlecone pine
    Some bristlecone pines in California are over 4,800 years old, older than the pyramids!
  5. Which plant has the largest single flower?
    Rafflesia
    Rafflesia flowers grow up to 1 m wide and smell like rotting meat!
  6. Which plant has the biggest seed in the world?
    Coco de mer
    Coco de mer seeds can weigh 10 to 25 kg (22 to 55 lb)!
  7. Which plant has seeds that are among the most poisonous in the world?
    Castor oil plant
    Castor beans contain ricin, a deadly poison. Never eat seeds you don't know!
  8. Which plant can grow almost a meter in a single day?
    Bamboo
    Some bamboo has been seen growing up to 120 cm (47 in) in 24 hours!
  9. How heavy is the world's heaviest pumpkin?
    About 1,280 kg
    The record pumpkin, grown in the UK in 2025, weighed 1,278.8 kg (2,819 lb), heavier than a small car!
  10. Which plant catches and eats insects?
    Venus flytrap
    A Venus flytrap snaps shut when an insect touches its tiny trigger hairs!
  11. Which plant has floating leaves up to 3 m wide?
    Giant water lily
    Giant water lily pads in the Amazon can grow up to 3 m (10 ft) across!
  12. One artist grafted a single tree to grow how many kinds of fruit?
    40
    Sam Van Aken's 'Tree of 40 Fruit' grows peaches, plums, cherries and more on one tree!
  13. Which of these is a berry, according to botanists?
    Banana
    Botanically, bananas are berries, but strawberries and raspberries are not!
  14. Pando, one of the heaviest living things, is a forest of which tree, all from one root system?
    Aspen
    Pando in Utah looks like a forest, but it's one single aspen connected underground!
  15. Where does a cactus store water?
    Thick stem
    A cactus stem swells up to hold water, and its spines are actually leaves!
  16. Which plant folds its leaves when you touch it?
    Sensitive plant
    Mimosa pudica folds up in seconds, maybe to scare off hungry animals!
  17. Bamboo is actually a giant type of what?
    Grass
    Bamboo belongs to the grass family!
  18. Which plant has the smallest flowers in the world?
    Duckweed
    Wolffia, a kind of duckweed, has flowers smaller than a grain of sand!
  19. Coffee beans are actually the seeds of what?
    A cherry-like fruit
    Coffee beans grow inside red 'coffee cherries'!
  20. Vanilla comes from which kind of plant?
    Orchid
    Vanilla pods grow on a climbing orchid!
  21. Chocolate is made from seeds that grow where?
    In cacao pods
    Cacao pods grow right on the trunk of the cacao tree!
  22. Which plant grows one of the tallest flower spikes in the world?
    Titan arum
    The titan arum's flower spike can grow taller than a person, and it stinks too!
  23. Is a tomato a fruit or a vegetable, botanically?
    Fruit
    Tomatoes grow from flowers and have seeds, so botanists call them fruit!
  24. Which young flowers turn to follow the Sun across the sky?
    Sunflowers
    Young sunflowers track the Sun. Grown-up ones mostly face east!
  25. Final question! How old was the oldest seed ever sprouted into a tree?
    About 2,000 years
    In 2005, scientists sprouted a 2,000-year-old date palm seed, and it grew!