1. The condition in which the male reproductive organs (stamens) of a flower mature before the female ones (carpels), thereby ensuring that self-fertilization does not occur. Examples of protandrous flowers are ivy and rosebay willowherb. Compare protogyny; homogamy. What is a Protandry in biology? 1 : a state in hermaphroditicRead More →
When pollination occurs, pollen moves from the male parts to the female parts. Pollen grains land on the stigma and a tiny tube grows from it and down the style into the ovary. The fertilized ovule becomes the seed and the ovary becomes the fruit. How do pollination agents transferRead More →
Disadvantages of cross pollination: Pollination may fail due to distance barrier. Flowers have to totally depend on the external agencies for pollination. More wastage of pollen. It may introduce some undesirable characters. What happens when you cross pollinate? Cross pollination is when one plant pollinates a plant of another variety.Read More →
An example of protandry is clownfish. In hermaphrodites, sperms are produced before eggs, for example, earthworms and crustaceans. It also promotes cross-fertilization and prevents self-pollination. Some examples are mint, salvia, legumes, ivy, etc. How does Protandry promote cross pollination? Temporal separation of male and female phases in hermaphrodite flowers (dichogamy)Read More →