Gardening quiz

More questions about Gardening

These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.

1. 1 Easy

   Which plant can grow a foot a day and cover a whole garden?

   Answer: Kudzu

   Why: First shown at Philadelphia's 1876 world's fair, kudzu became the porch vine, then a government erosion cure with 100 million seedlings.

2. 2 Medium

   What happens inside a garden pot when gravel lines the bottom?

   Answer: It usually lets more water drain away

   Why: A 2025 PLOS ONE experiment found drainage layers almost never held more water, and 60 mm of coarse sand drained best of all.

3. 3 Hard

   Through which leaf structures do plants discharge guttation droplets?

   Answer: Hydathodes

   Why: Unlike stomata, hydathodes are open vascular terminals that cannot shut, letting excess root pressure bleed out directly.

4. 4 Easy

   Which stage describes a dormant plant seed sprouting into a new seedling?

   Answer: Germination

   Why: Some seeds require physical scratching or cold temperatures to break dormancy before sprouting.

5. 5 Medium

   How does baking soda spray help control rose fungus?

   Answer: Prevents new spore germination

   Why: Most people think baking soda kills active black spot infections, but it only creates an alkaline surface that blocks new spore growth.

6. 6 Hard

   What process nicks hard seed coats so water can enter for sprouting?

   Answer: Scarification

   Why: Scarification weakens the water-impermeable seed coat of plants like sweet peas so moisture reaches the dormant embryo.