Science Biology Question??!!?

If you can please help me answer the following questions i would greatly appriciate it.



1. Name the parts of a flower as well as their function.



2. What are the stages of Mitosis, and what happens in each stage



3. Define internal and external fertilization and give examples of organisms that reproduce by each method.



4. What are some benefits and draw backs of Sexual Reproduction, and Asexual Reproduction?

Science Biology Question??!!?
im REALLY not trying to be like mean or anything, but mitosis is hard to understand and grasp if you're not actually reading it and looking at pictures on your own.



try this.. its interactive and will definitely help you understand it

http://www.cellsalive.com/mitosis.htm







internal fertilization- Fertilization of the egg within the body of the female. [reptiles, birds, mammals]



external fertilization - External fertilization is a form of fertilization in which a sperm cell is united with an egg cell external to the body of the female.

-occurs mostly in wet environments and requires both the male and the female to release their gametes into their surroundings

[fish, amphibians]









didn't answer everything, but i hope that helps a little
Reply:1. Name the parts of a flower as well as their function.



Pistil - includes stigma and style and ovary with ovule, female reproductive organ

Stigma - attracts pollen

Style - supports stigma

Ovary with ovule - contains egg that will be fertilised

Stamen - includes anther and filament, male reproductive organ

Anther - produces pollen (with sperm)

Filament - supports anther



3. Define internal and external fertilization and give examples of organisms that reproduce by each method.



Internal fertilisation is the process whereby the egg is fertilised inside the female. External fertilisation is the process whereby the egg is fertilised outside the female body. Example of internal fertilisation are humans and mammals. Examples of external are some species of fish; the female lays eggs in the water and the male deposits sperm on them.



4. What are some benefits and draw backs of Sexual Reproduction, and Asexual Reproduction?



Asexual reproduction is fast, efficient. The offspring are uniform and identical to each other; it allows the species to survive through numbers alone. Asexual reproduction allows organisms to multiply rapidly (like bacteria).



Sexual reproduction is a sign of a more complex species. Because the offspring are not identical to the parent, they can adapt better to a particular environment. It also allows organisms to survive through variation and adaptation.



Drawbacks are what each lacks in comparison to the other method of reproduction.
Reply:Root - get nutrients from soil

Stem - transport nutrients

Petal - attract insects

Pistol - reproductive organ

Stamen - reproductive



Interphase

Prophase

Mesaphase

Anaphase

Telophase

http://www.biology.arizona.edu/cell_bio/...



Checkout that website or just type in mitosis in google - its too long to describe each on here.



internal fertilization I would assume is what mammals do, external is like what salmon do, or plants, happens outside of the parent organism.



Sexual reporduction:

Pro - mixing of DNA to allow for different genes

Con - need a second member of the species to reproduce

Asexual reproduction:

Pro - dont need another beign to reproduce

Con - all offspring are exact replicas of the parent - any damaging gene will be passed on to all offspring.





Hope that helps!!!