Examlex
Which one of the following is a subatomic particle closely related to the positron?
Seed Coat
The protective outer layer of a seed that encloses its embryo and nutrient stores.
Dioecious
Referring to a plant species having male and female reproductive structures on separate individuals.
Motile Sperm
Sperm cells that are capable of movement, typically through flagella, to reach and fertilize an egg cell.
Monoecious
Describing plants that have both male and female reproductive organs on the same individual, allowing self-pollination.
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