Science / Biology Glossary

Zone Of Elongation: Area in plant roots where recently produced cells grow and elongate prior to differentiation.

Zone Of Intolerance: The area outside the geographic range where a population is absent; grades into the zone of physiological stress.

Zone Of Physiological Stress: The area in a populations geographic range where members of population are rare due to physical and biological limiting factors.

Zygomycetes: One of the division of the fungi, characterized by the production of zygospores; includes the bread molds.

Zygospore: In fungi, a structure that forms from the diploid zygote created by the fusion of haploid hyphae of different mating types. After a period of dormancy, the zygospore forms sporangia, where m . . . View Full Definition

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