Jean listed the steps involved in the life cycle of a gymnosperm.1 - The pollen gets stuck in a sticky liquid.2 - Sperm from the pollen fertilize the egg in the ovule.3 - The ovule develops into a seed.4 - When mature, the seeds are dispersed.Which step is missing?
Answer
A
Before step 3, the ovule develops cones.
B
Just after step 3, the ovule develops cones.
C
Before step 1, wind carries pollen from the male to the female cones.
D
Just after step 1, wind carries pollen from the male to the female cones.
Explanation
Wind carries pollen from the male cones to the female cones before the pollen reaches and sticks to a sticky liquid. The sperm then fertilize the egg in the ovule, and the ovule develops into a seed that is later dispersed. So the missing step is “Before step 1, wind carries pollen from the male to the female cones.”
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