The ray florets of a sunflower are often sterile, meaning they:
Do not attract pollinators
Do not perform photosynthesis
Do not produce seeds
Do not have a structure
Related Questions
Presence of persistent calyx is a feature of family
Solanaceae
Gramineae
Malvaceae
Compositae
Perianth is the condition in which
Only sepals are present
Only petals are present
Both sepals and petals are present
Neither sepals nor petals are present
Aggregate fruit is found in
Ananas sativus
Annona squamosa
Artocarpus integrifolia
Pyrus malus
Proximal end of the filament of stamen is attached to the:
Thalamus or petal
Stigma
Style
Ovary
Which of these flowers can be cut into multiple planes of symmetry?
Daisy
Orchid
Snapdragon
Bird of Paradise
Type of aestivation shown by Pisum is
Imbricate
Vexillary
Twisted
Quincuncial
Which of these is NOT a feature of free-central placentation?
Ovules attached to a central column
Unilocular ovary
Multilocular ovary
Found in Caryophyllaceae
Which one of the following statements is correct with reference to Amentum?
The peduncle is fleshy and bears unisexual flowers and the flowers open in basipetal manner
The peduncle is condensed and bears bisexual flowers and the flowers open in a centripetal manner
The peduncle is weak, drooping and bear unisexual flowers and the flowers open in an acropetal manner
The peduncle grows indefinitely and bears bisexual flowers and flowers open in basipetal manner
Placentation is parietal in the ovary of
Argemone
Mustard
Dianthus
1 & 2
Bract is a modified
leaf
stem
root
flower
