1. Vascular tissue that transports water in leaves connects directly to meristems in the root tip pistils in the flower root hairs in t...

1. After several days near a window, a house plant began to grow toward the window. This growth pattern occurred because auxins prevent t...

1. Corals reproduce by forming multicellular outgrowths from the body wall that detach and develop into independent organisms. Which statem...

1. An example of a mutagenic agent is an amine acetylcholine ultraviolet light sulfer dioxide

1. According to the heterotroph hypothesis, which gas was added to the environment by the first heterotrophs? nitrogen oxygen carbon di...

1. Which activity is necessary for the survival of a species of amoeba but not necessary for the survival of an individual member of that s...