photoperiod affects reproduction in seasonal breeders, both plants and animals. explain

Dear Student.
Please find below the solution to the asked query.
Photoperiod affects reproductio in seasonal breeders, both plants and animals. In animals photoperiod affects the seasonal breeder through changes in melatonin secretion by the pineal gland. The reproductive axis is controlled by melatonin which is secreted at night only and therefore relays day length to the body.  Photoperiod also affects testis size which ultimately causes causes gonad regression. Animals generally reproduce during spring and summer to take advantage of the warmer temperatures. 
In plants photoperiod directly affects flowering by regulating the secretion of florigen and vernalin. Plants flower in response to the relative lengths of day and night.‚Äč Plants produce pollen when pollinators will be active and help in transfer of pollens. 

Hope this information will clear your doubts about the topic.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.

  • 50
What are you looking for?