In sexual reproduction, cells divide by meiosis to form gametes - AQA - GCSE Biology: Combined Science - Question 4 - 2020 - Paper 2
Question 4
In sexual reproduction, cells divide by meiosis to form gametes.
Which two statements are true for cell division by meiosis?
Tick (✓) two boxes.
Daughter cells ha... show full transcript
Worked Solution & Example Answer:In sexual reproduction, cells divide by meiosis to form gametes - AQA - GCSE Biology: Combined Science - Question 4 - 2020 - Paper 2
Step 1
Which two statements are true for cell division by meiosis?
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Answer
✓ Four daughter cells are formed.
✓ The parent cell divides twice.
Step 2
Label the endocrine glands on Figure 3.
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Answer
Thyroid gland (located at the front of the neck), Adrenal gland (on top of the kidneys), Ovary (located in the pelvic region).
Step 3
Complete Table 2.
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Answer
Hormone
Name of gland which releases hormone
Target organ of hormone
Luteinising hormone (LH)
Pituitary gland
Ovary
Adrenaline
Adrenal gland
Heart / lungs / liver
Glucagon
Pancreas
Liver / muscle
Step 4
Suggest two advantages for garden centres of growing geraniums by asexual reproduction compared with sexual reproduction.
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Answer
Only need 1 parent plant.
Will produce many genetically identical plants.
Step 5
Suggest two disadvantages for garden centres of growing geraniums by asexual reproduction compared with sexual reproduction.
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Answer
Will all be susceptible to the same diseases / pathogens.
No genetic variety for new colors / characteristics to offer customers.
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