Examlex
Some members of a species live in a cold environment.They spend much of their energy on maintaining body temperature and finding food, and they have few offspring.Members of the same species living in a more moderate environment allocate more of their energy to reproduction and have more offspring.The two species groups are illustrating the use of _______ to optimize their survival in different habitats.
Female Cones
Reproductive structures of certain plants like conifers, which produce seeds in contrast to male cones that produce pollen.
Megasporangia
Structures in plants that produce megaspores, which develop into female gametophytes.
Antheridia
Male reproductive structures in plants, algae, and fungi that produce and release sperm.
Integuments
Layers or coverings of an organism or organ, serving to protect or enclose, especially the outer layer of seeds or the skin of humans and animals.
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