c) (i) Draw a labelled diagram of the human male reproductive system and its associated glands - Leaving Cert Biology - Question 14 - 2015
Question 14
c) (i) Draw a labelled diagram of the human male reproductive system and its associated glands.
(ii) Put X on the diagram where meiosis occurs.
(iii) Give a function... show full transcript
Worked Solution & Example Answer:c) (i) Draw a labelled diagram of the human male reproductive system and its associated glands - Leaving Cert Biology - Question 14 - 2015
Step 1
Draw a labelled diagram of the human male reproductive system and its associated glands.
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Answer
The diagram should clearly depict the following structures:
Testis
Prostate gland (or seminal vesicles)
Epididymis
Sperm duct
Urethra
Penis
Labels must indicate each of these components accurately.
Step 2
Put X on the diagram where meiosis occurs.
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Answer
Meiosis occurs in the testis, specifically in the seminiferous tubules where sperm production takes place. X should be marked within the testis.
Step 3
Give a function of one named gland.
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Answer
One named gland is the prostate gland. Its function is to produce fluid that nourishes and transports sperm, contributing to semen.
Step 4
Suggest why a sperm cell needs so many mitochondria.
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Answer
Sperm cells require a substantial amount of energy to swim long distances to reach and fertilize the egg. Mitochondria are the organelles responsible for generating ATP, which provides the necessary energy for motility.
Step 5
Mitochondria are inherited exclusively from the mother. Suggest why this is the case.
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Mitochondria are passed down through the cytoplasm of the egg during fertilization. Since the sperm contributes only its nucleus to the egg, the sperm's mitochondria typically do not enter the egg, resulting in maternal inheritance of mitochondria.
Step 6
State the survival times of the egg and sperm in the female body.
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Answer
The survival time of the egg is approximately 12 to 48 hours after ovulation, while sperm can survive up to 0 to 7 days within the female reproductive tract.
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