IT TAKES TWO!!!Sexual Reproduction
TYPES OF SEXUAL REPRODUCTION Zygospores A reproductive part of a fungus or mould The hypha is a long branching filament
of the fungus The nuclei of two hyphae join to create a
zygospore When conditions are right (warmth,
moisture, etc.), the zygospore germinates and creates a new fungus.
Bacterial conjugation Bacteria are able to directly transfer
genetic material from one cell to another.
New characteristics may be created by the combination.
New cells with the changes will be created through binary fission
Sexual reproduction in plants Female part of the plant – pistil Pistil – stigma – where the pollen grains
land, style – the connecting tube from the stigma to the ovary, ovary – where the egg is located
Male part of the plant – stamen Stamen – filament – the support, anther
- the “bulb” that produces the pollen
When the pollen and egg unite, the fertilized egg is called a zygote.
When the zygote undergoes cell divisions, the multicellular organism is now called an embryo.
Self-pollination – both male and female parts are on the same plant
Cross-pollination – male and female parts are on separate plants.
Sexual Reproduction in Animals Also involve sex cells (sperm and egg).
Called gametes. Fertilization may occur inside (humans)
or outside (frogs) of the female Advantages?? Disadvantages??