Durante el 2° período académico, los estudiantes de 7° de un colegio de Armenia estudiaron los diferentes tejidos vegetales e hicieron un experimento con una planta de fríjol. Para el experimento, regaron con agua únicamente las hojas superiores de la planta, impidiendo por completo la caída de agua a la tierra en la maceta. Al cabo de 1 mes arrancaron la planta de raíz para estudiar esta zona y se dieron cuenta de que, si bien la tierra estuvo completamente seca durante todo el mes, las raíces se habían mantenido bien hidratadas. ¿Qué tejido podría explicar los resultados observados por los estudiantes de 7°?

What is a sex-linked genetic disorder that disrupts the blood's ability to clot? a. achondroplasia b. huntington's disease c. hemophilia d. albinism

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.

Recently, crops of vegetables such as lettuce and green onions have been contaminated, while they are still on the farm, with bacteria that cause food poisoning. how will science influence the way the government responds to prevent an increase in food-borne diseases? because science has shown that lettuce and green onions are not nutritionally valuable, the government may pass laws that ban the sale of lettuce and green onions. because science has shown that there is no way to prevent bacterial contamination, the government may pass laws that punish businesses that buy lettuce and green onions. because science has shown that the washing of hands prevent the spread of infectious diseases among people, the government may pass laws that require hand washing by everyone who handles food. because science has shown there are ways to find the source of the contamination, the government may pass laws that require farm practices that reduce the contamination of lettuce and green onions.