12. (a) (i) Name the two main types of reproduction - Leaving Cert Biology - Question 12 - 2012
Question 12
12. (a) (i) Name the two main types of reproduction.
(ii) Explain the term fertilisation.
(b) The flower is the organ of reproduction in many plants.
(i) What... show full transcript
Worked Solution & Example Answer:12. (a) (i) Name the two main types of reproduction - Leaving Cert Biology - Question 12 - 2012
Step 1
Name the two main types of reproduction.
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Answer
The two main types of reproduction are Sexual reproduction and Asexual reproduction.
Step 2
Explain the term fertilisation.
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Answer
Fertilisation refers to the fusion of gametes, which ultimately leads to the formation of a zygote.
Step 3
What part of the flower produces pollen?
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Answer
The anther, which is part of the stamen, produces pollen.
Step 4
After fertilisation, what part of the flower becomes the fruit?
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After fertilisation, the ovary (also known as the carpell) of the flower develops into the fruit.
Step 5
Give two methods of seed dispersal in plants.
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Two methods of seed dispersal in plants are wind dispersal and animal dispersal.
Step 6
Why is it necessary for plants to disperse their seeds?
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It is necessary for plants to disperse their seeds to avoid competition for resources and to access suitable conditions for growth.
Step 7
What is the advantage of dormancy to seeds?
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The advantage of dormancy to seeds is that it allows them to survive adverse environmental conditions until the conditions are favorable for germination.
Step 8
Give three conditions necessary for seeds to germinate.
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Three conditions necessary for seeds to germinate are: adequate water supply, suitable temperature, and the presence of oxygen.
Step 9
Name the parts labelled A, B and C.
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Part A is the Head, Part B is the Nucleus, and Part C is the Tail.
Step 10
What is the function of the midpiece of the sperm?
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The function of the midpiece of the sperm is to provide respiration or to produce energy for motility.
Step 11
Name the hormone responsible for sperm production.
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The hormone responsible for sperm production is Testosterone.
Step 12
Give one cause of infertility in men.
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One cause of infertility in men is low sperm counts.
Step 13
Explain the term contraception.
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Contraception refers to the prevention of fertilisation or the prevention of pregnancy.
Step 14
Name two methods of contraception.
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Two methods of contraception include natural methods and mechanical methods.
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