A Comparison between Asexual and Sexual Reproduction

5942 Words Sep 26th, 2010 24 Pages
Reproduction Research Assignment Sac 5

PART 1 : Asexual vs. Sexual Reproduction [ 4 marks ]
- Discuss the differences between, and the advantages and disadvantages of sexual and asexual reproduction :

SEXUAL REPRODUCTION
Sexual Reproduction is the formation of a new organism from two parents usually, and involves the joining of gametes [ e.g. sperm, pollen, egg] to form a single cell called a zygote [ or fertilised egg ]. The offspring are similar, but not identical to the parents. Sexually Reproductive organisms include mammals, most reptiles, and flowering plants. ADVANTAGES
There is greater genetic variation of the offspring and therefore, greater chance of survival in changing environments. Asexual Reproduction is the process by
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The sperm she receives is stored in a little pouch connected to the genital tract and closed off by a muscular valve. Whether or not she chooses to release the sperm to fertilise her eggs, and create female bees is her choice. Otherwise, only male drones are hatched.

PART 2 : Structure And Function [ 6 marks ]
- This section must include 3 labelled diagrams of the human male reproductive system, female reproductive system and the reproductive system of a flower.

PARTS OF THE MALE REPRODUCTIVE SYSTEM

TESTIS -
There are two testes situated in a sac called the scrotum. Due to the testes needing an optimum temperature for sperm production, the sac is located outside the body. This is because the core body temperature is far too warm to keep producing healthy sperm. EPIDIDYMIS -
This stores the large numbers of sperm until they are ejaculated out through the penis. In these two ducts, sperm complete their maturation. SPERM DUCT/VAS DEFERENS –
The sperm duct, or vas deferens transport sperm from the testes to the urethra. SEMEN-PRODUCING GLANDS -
Semen is the fluid produced to protect the sperm from dehydration and the acidic environment of the female vagina after sexual intercourse. Semen allows the sperm to swim more easily. URETHRA -
This is the tube that normally carries urine from the urinary bladder. When semen containing sperm is ejaculated, it also travels out through the urethra, but the
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