write a short note on the following,stamen ,carpel
Answers
Answer:
The stamen (plural stamina or stamens) is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium.
Stamens can also be adnate (fused or joined from more than one whorl):
epipetalous: adnate to the corolla
epiphyllous: adnate to undifferentiated tepals (as in many Liliaceae)
They can have different lengths from each other:
didymous: two equal pairs
didynamous: occurring in two pairs, a long pair and a shorter pair
tetradynamous: occurring as a set of six stamens with four long and two shorter ones
or respective to the rest of the flower (perianth):
exserted: extending beyond the corolla
included: not extending beyond the corolla
They may be arranged in one of two different patterns:
spiral; or
whorled: one or more discrete whorls (series)
They may be arranged, with respect to the petals:
diplostemonous: in two whorls, the outer alternating with the petals, while the inner is opposite the petals.
haplostemenous: having a single series of stamens, equal in number to the proper number of petals and alternating with them
obdiplostemonous: in two whorls, with twice the number of stamens as petals, the outer opposite the petals, inner opposite the sepals, e.g. Simaroubacea
Connective
Explanation:
Carpel, One of the leaflike, seed-bearing structures that constitute the innermost whorl of a flower. ... One or more carpels make up the pistil. Fertilization of an egg within a carpel by a pollen grain from another flower results in seed development within the carpel.