Several lineages of reptiles evolved from a common ancestral stem reptile, each adapting to different ways of life.

Which of the following circumstances would cause exponential growth to move into a logistic growth phase?

Some plants are not photosynthetic and must depend upon bacteria in their root nodules for nutrients.

All of the below are plant root function EXCEPT

Which of the following statements is NOT correct about the arrangement of tissues in the eudicot root?

The main components of soil are

The Pr → Pfr conversion cycle is known to control various growth functions in plants. Which of the following functions does the cycle NOT control?

Which of the following statements best describes a herbaceous eudicot stem?

Consider the possibility that we discover a gene that regulates both the amount of root hairs and where root hairs grow on a root tip. Since the surface area provided by root hairs is so critical to their uptake of water and nutrients, expanding their growth area seems a great advantage. However, which of these might be a problem?

The transpiration rate in plants is increased by all of the below factors EXCEPT