Structure. As a plant’s reproductive part, a flower contains a stamen (male flower part) or pistil (female flower part), or both, plus accessory parts such as sepals, petals, and nectar glands (Figure 19). The stamen is the male reproductive organ.
Do all flowers have both male and female reproductive structures?
Flowers, such as roses or lilies, have both male and female parts called “perfects.” Some flowers, such as those found on cucumbers or melons, have all male or all female parts but not a combination of both. These types of flowers are called “imperfect.”
Do perfect flowers have male and female parts?
Perfect flowers contain both the male reproductive structures (stamen) and female reproductive structures (pistil).
How do you know if a flower is male or female?
Tap the flower over white paper, and look for yellow or white pollen residue on the paper. … Pollen consists of the male reproductive cells and is typically yellow. Pollen, which is used to fertilize a female flower’s ovules, indicates a male flower.
How do you know if a flower is perfect or imperfect?
Plants may have flowers that are complete or incomplete. If a flower has sepals, petals, pis- tils, and stamens, it is a complete flower. If a flower is missing one of those, it is an incom- plete flower. Imperfect flowers are always incomplete, but incomplete flowers may or may not be imperfect.
Is Sunflower an incomplete flower?
The sunflower is not a single flower at all, but a whole bouquet. Examine it closely and you will find that there are perhaps a hundred or more small flowers packed together in a structure known as a head. On the outside of the head is a series of greenish bracts called phyllaries (little leaves).