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?

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.

interphase

the period of cell growth when the cell synthesizes new molecules and organelles. the cell is not dividing and it constitutes the majority of the time spent in the cell cycle

prophase

changes occur in the nucleus and cytoplasm. the chromatin condenses to form structures (sister chromatids) visible with a light microscope and the mitotic spindle begins to form, but the nucleus is still in tact

prometaphase

the nuclear envelope fragments and the spindle microtubules attach to the kinetochores of the sister chromatids

metaphase

all the cell's duplicated chromosomes are lined up at an imaginary plane equidistant between the poles of the mitotic spindle

anaphase

begins when sister chromatids separate from each other and ending when a complete set of daughter chromosomes arrives at each of the two poles of the cell

telophase

the daughter nuclei form at the two poles of a cell

cytokinesis

the division of a cytoplasm to form two separate daughter cells. usually occurs during telophase during mitosis. this and mitosis make up to mitotic (m) phase of the cell cycle