Flower Quiz
Questions: 16 · 10 minutes
1. A plant germinates, flowers, produces seeds, and dies within one growing season. How is its life cycle classified?
Evergreen
Biennial
Perennial
Annual
2. A rose produces abundant leafy growth but unusually few flowers after repeated use of a high-nitrogen fertilizer. What is the most likely explanation?
The fertilizer caused the flowers to be pollinated too early
The plant converted its flower buds directly into roots
Excess nitrogen favored vegetative growth over flowering
Nitrogen prevented the leaves from producing chlorophyll
3. Which structures commonly surround and protect a flower while it is still a bud?
Filaments
Stigmas
Sepals
Ovules
4. A pale flower opens at night and releases a strong, sweet scent after dusk. Which pollinator is this combination especially likely to attract?
Hummingbird
Wind
Moth
Butterfly active in full sun
5. Cut flowers begin wilting even though their vase still contains water. Which explanation most directly concerns water transport?
The vase water is preventing the petals from transpiring
The flowers were not pollinated before being cut
Blocked or dried stem vessels are limiting water uptake
The cut stems can no longer detect gravity
6. Which flower structure is adapted to receive pollen?
Anther
Stigma
Ovary
Sepal
7. During a controlled flower cross, a gardener removes the anthers before they release pollen. What is the main purpose of this step?
To prevent self-pollination before selected pollen is added
To increase nectar production for pollinators
To change the inherited color of the petals directly
To make the ovules germinate sooner
8. Why can removing faded flowers, or deadheading, encourage some ornamental plants to bloom again?
It increases the amount of oxygen entering through the roots
It can reduce investment in seed production and redirect resources
It makes pollen move faster between the remaining flowers
It changes the genetic color of the next flowers
9. Which planting plan is most likely to provide pollinators with flower resources across a long growing season?
Combine species with overlapping early, middle, and late bloom periods
Plant one variety that produces a single brief flush of flowers
Choose plants only by blossom size, regardless of flowering time
Concentrate on foliage plants and add one flowering species
10. What is the primary biological role of a flower in an angiosperm?
To enable reproduction that can lead to seed formation
To perform most of the plant's photosynthesis
To store water for dry periods
To anchor the plant in the soil
11. A sunflower looks like one large flower from a distance. Botanically, what are you actually seeing?
One simple flower with unusually numerous stamens
A single flower whose petals have separated into layers
A ring of unopened buds around one central flower
A flower head composed of many small florets
12. Colorful petals most commonly help a flower by doing what?
Producing the plant's pollen grains
Protecting the roots from sunlight
Absorbing minerals directly from the air
Attracting animals that may transfer pollen
13. A tulip survives underground between growing seasons primarily through which type of storage organ?
Bulb
Tuber
Rhizome
Corm
14. A compatible pollen grain lands on a stigma and germinates. What structure then grows toward an ovule and carries the sperm cells?
Filament
Pollen tube
Sepal vein
Petal margin
15. You have brought home a bouquet of cut flowers. Which first step best supports water uptake and vase life?
Put the bouquet in a sunny window to increase photosynthesis
Recut the stems and place them in a clean vase with fresh water
Add a concentrated dose of garden fertilizer to the vase
Leave every leaf submerged so it can absorb more water
16. A garden flower goes dormant in winter but regrows from the same established root system for several years. Which term best describes it?
Annual
Ephemeral
Biennial
Perennial