The correct options are
A Flowers do not produce scent or nectar.
C The stamens are long and protrude out of the flowers to be exposed to the wind
Anemophilous or wind-pollinated plants have following characteristics:
1. The flowers are usually small and unattractive.
2. They do not produce scent or nectar
3. The anthers produce large quantity of pollen grains
4. The stamens are long and protrude out of the flowers to be exposed to the wind.
5. The anthers are large and highly flexible so that they can be easily moved with the wind.
6. Pollen grains are smooth, light and dry to be able to get carried away with the wind.
7. Stigmas are comparatively large and feathery to trap the pollen grains.
Examples: Maize, rice, grasses, sugarcane etc