4 Draw and describe the different types of stamen based on the position of anther.
a 3 mark ques
Answers
Answer:
anther is the male part of plant
Answer :-
The reproductive structure (plural stamina or stamens) is that the pollen-producing sex organ of a flower. together the stamens type the gametoecium.
Different types of gametoecium found of flowers are :
✯On the premise of Cohesion :
• Monoadelphous: Stamens is also united by suggests that of their filament in one bundle with free anthers.
Eg:-----> China rose, lady's finger.
• Diadelphous : once the filaments are united into 2 bundles and therefore the anthers stay free.
Eg. -----> bean, gram
• Polyadelphous : once the filaments are united into quite 2 bundles however anthers are free.
Eg. ----> Lemon, castor.
• Syngenesious: once anthers are united however filaments are free.
Eg. ----> flower
• Synandrous : once anthers also as filament of stamens are united throughout the complete length.
Eg.----> Members of family Cucurbitaceae family
✯ On the premise of length and attachment of stamens :
• Didynamous : four stamens , 2 outer little and a couple of inner Long.
Eg.---> asterid dicot genus, Salvia
•Tetradynamous: six stamens, a pair of outer little and four Inner long.
Eg. ----> Mustard , Radish
• Heterostemony : Stamens are of various length.
Eg. ----> Cassia.
Stamen function
The primary operate of the reproductive structure is spore production. As mentioned on top of, the reproductive structure contains microsporangia inside specialised compartments termed spore sacs. A sporangium contains a extremely alimental lining housing diploid spore cells. These diploid cells then bear meiosis and become haploid spores. when the haploid cells multiply via cellular division, they're termed associate immature gametophyte, or spore grain. The spore grains are then free from specialised openings within the reproductive structure to facilitate impregnation. impregnation happens by dissemination via the wind, also as pollinating insects or birds.