Guard cells are responsible for closing and opening the lenticellular maculation.

What is the term used when humans breed better farm animals or plants over many generations by saving only the best varieties for breeding.

What is the term used when humans breed better farm animals or plants over many generations by saving only the best varieties for breeding.

A ______ includes all the organisms inhabiting a particular area.

Which answer choice below explains why red algae have their unique red color and how it helps them to live deep in the ocean.

Organisms reproduce following several patterns. Some organisms produce few offspring and provide parental care. Other organisms produce many offspring but provide little or no parental care. Which of the following organisms has the greatest risk of losing a population due to the death of only a few individuals?

What is the difference in reproduction between a blueberry bush and a pine tree?

1a. Vertebral column present – vertebrate 1b. Vertebral column absent go to (2) 2a. 3 or more body segments go to (3) 2b. 2 body segments go to (4) 3a. wings possible – insect 3b. no wings – millipede 4a. antennae absent – arachnid 4b. antennae present – crustacean According to the table and dichotomous key shown above, which of the following conclusions can be drawn about the organisms?

SLO 5 Under a microscope, the following eukaryotic single celled organisms were viewed. Some were photosynthetic and some were heterotrophic. All three organisms were in the same kingdom. They can be identified as what type of organisms?

The diffusion of water vapor from a plant is called ____.