What does a population graph with a j curve show? a. exponential growth b. life span c. survivorship data d. logistic growth

Ans.

A population graph with J-shape growth curve represents exponential growth (growth without limits), in which growth rate becomes faster and faster as the population grows in number or size. In exponential growth, growth rate is directly proportional to the population size or number.

Exponential growth occurs in an environment, where unlimited resources are present for a population as there will be no competition to limit the population growth.

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