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B3d Divide and Rule
1. Structure of a sperm cell is adapted to its function:
small s................ and t................
n................ carries genes
produced in large numbers to increase chance of f................ .
Structure of an egg cell is adapted to its function:
large size as contains f................ source (for the…

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(ii) Some sperm cells have more mitochondria than others.
Would you expect sperm cells with more mitochondria than
others to have a greater chance of fertilising an egg? Explain
your answer.
Would they have a greater chance of fertilising an egg? _

Explanation _

_






(b) The diagram shows…

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Continue the line to show how a boy's mass changes between the ages of 10 and 20
years.

6. On this same axes above show how the master of the treaty would change over the
years if it hadn't been trimmed and if the growing conditions have been good.

7.…

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(i) Which diagram describes meiosis?
Choose A, B, C or D.
......................................................................................................................................
(ii) Which diagram describes mitosis?
Choose A, B, C or D.

...................................................................................................................................................
.


9. describe how new cauliflower plants can be grown by tissue culture:
a. choose suitable cauliflower with a d................ characteristics
b. Cut out very s................…

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