Las hojas de la mimosa (Mimosa púdica) se pliegan al ser rozadas, incluso, por una gota de lluvia. ¿Por qué? Como esta planta es característica de climas áridos, de vientos muy secos y fuertes, una de la hipótesis que se sostiene es que así evitar la pérdida de agua. A veces, la respuesta de una planta consiste en un movimiento que dura un tiempo determinado y que no tiene relación con la orientación del estímulo, sino que este le sirve de señal para iniciar un movimiento. A- ¿Por qué te parece que se llaman mimosas? B- ¿te parece que puede ser una nastia o un tropismo? ¿En qué parte del texto se encuentra la información para responder a esta pregunta?

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

Astudent analyzed ears of corn that demonstrated two traits in the f2 kernels, purple or white colors and smooth on wrinkled shapes. a tabulation of 135 individual kernels gave the following results: purple and smooth = 75 white and smooth = 28 purple and wrinkled = 24 white and wrinkled = 8 what would be the only phenotype present in the f1 ger

Which of the following is the function of the nociceptors? a. detecting odors in the nose b. detecting painful stimuli c. detecting central body temperature d. detecting touch and pressure