yes
A sunflower is a unisexual flower. Flowers that are unisexual have either stamens and no pistils or pistils with no stamens.
It depends on the type of flower and condition of gynoecium. In a pentamerous flower with apocarpus condition, there may be as many as five pistils but in syncarpous condition there will be only one united structure of all the five pistils.
Yes, there are flowers without pistils. E.g the flower of lemon however, most of flowers have pistils.
Complete flower
gynoecium
The amount of pistils or a rose depends on the variety of a rose. Most roses have several pistils. The pistil is the female reproductive part of a flower.
A sunflower is a unisexual flower. Flowers that are unisexual have either stamens and no pistils or pistils with no stamens.
Zinnias typically have a varying number of pistils depending on the specific species and variety, but generally, they possess multiple pistils within each flower head. Each flower usually contains one pistil, which is the female reproductive part of the flower, but since zinnias have compound flower heads made up of many individual flowers, the total number of pistils can be quite high. Overall, you can expect each flower head to have a cluster of pistils corresponding to the number of individual flowers it contains.
pistils
Yes, there are flowers without pistils. E.g the flower of lemon however, most of flowers have pistils.
Datura plant has two pistils (carpels) in its flower. Both these pistils are united to form one ovary.
sepals, petals, stamens and pistils.