Cells are the building units of life - the ... the female part of the flower which collects pollen grains. During plant reproduction, pollen grains need to move to the stigma of a flower.

The film explains the process of plant reproduction, covering both asexual and sexual methods. Asexual reproduction is demonstrated through simple organisms like algae, where cell division leads ...

View Full Profile. Learn about our Editorial Policies. In the flowering plant world, reproduction means an intricate succession of events. It begins when a pollen grain that carries the sperm cells ...

Take the evolution of sex, for instance. To make the move from asexual to sexual reproduction, nature took a system by which parent cells reproduced simply by dividing (asexual reproduction ...