what is sturcture of a composite flower?
The main characteristic of the Asteracea is the composite
or compound nature of their flowers, or more properly
their "inflorescences". An inflorescence is an arrangement
of flowers in a cluster. What we would call an
individual "flower" on an aster or sunflower is, in fact, a
dense cluster of many tiny flowers, called "florets". Look
closely at an aster, daisy, sunflower or any other member
of the Asteracea and you can see the individual florets.
Most of the florets, that form the centre or disc of
the "flower", are tubular in shape and have no petals.
Around the edge of the "flower" are florets which have a
single petal attached to their outer edge. This array of
single-petalled florets encircling the other densely packed
florets appears to us to be a single "flower". The whole
inflorescence sits in a cup-like structure called an
involucre, which is a whorl of bracts (scaly, leaf-like
structures) below the "flower".
| Is This Answer Correct ? | 1 Yes | 1 No |
What are the Ramulina reticulate ?
Telome theory ?
what is the fruit of a tulip?
What is quiscent centre?
Explain electrophoresis?
What are the characteristic features of Kaloxylon?
Explain about Reproduction ?
why and what mechanism involve for heliotropism (the response of head towards sun) in sunflower.?
At present which is highly evolved? Is is trees, shrubs or herbs? Why?
What reactions cause safranin to stain plant tissues red?
Are large plants able to move at all ?
Give two of examples of Modern agriculture implements ?