Examlex
The pairing of bases of a strand of DNA is obligatory. If a strand of DNA were composed of the base sequence of ATCG, what would be the obligatory sequence of its opposing base pairs?
Stomata
Small pores located on the surface of leaves and stems, enabling the exchange of gases between the plant and the surrounding atmosphere.
Guard Cells
Specialized cells in the epidermis of leaves, stems, and other organs that regulate gas exchange and water loss by controlling the size of stoma openings.
Vascular Bundle
Multistranded bundle of xylem, phloem, and sclerenchyma fibers running through a stem or leaf.
Endodermal
Relating to the innermost layer of the three primary germ layers in the embryo, giving rise to the gastrointestinal tract, liver, and lungs.
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