The hypothalamus detects fluctuations in temperature. The receptors on it are known as thermoreceptors. Skin also possesses thermoreceptors which can detect the temperature of the external environment. This information is relayed to the hypothalamus which can in turn transmit nerve pulses for corrective mechanisms to occur. If you are HOT, sweating and vasodilation occurs. If you are COLD, vasoconstriction and shivering occur. In extreme cold, blood flow to extremities decreases in order to protect internal organs. This is an example of:

What is unique about adult amphibians’ respiratory system?

________use chemicals from the environment (like deep-sea vents) to make their food.

On a tree, where would the vascular tissue be found?

Purple loosestrife is a beautiful, long-stemmed wetlands species brought to the United States from Europe as an ornamental plant. In the U.S. it has no predators and out competes another species of wetland grass, Cattails, which is a valuable resource for many species. This is an example of:

__________________ is a process in angiosperm plants in which two sperm are required to fertilize the contents of the embryo sac.

What order of mammals lay amniotic eggs?

Which of these animals are parasitic flat worms?

On the epidermis of a leaf are small holes that allow CO2 in and O2 out called:

You are studying during the summer session at a field site in the western United States. During your studies, you have stumbled upon a creature that is unfamiliar to you and does not allow for easy classification. As you grapple with whether or not this creature is an animal you must reconsider the characteristics of animals. Which of the following statements supports that your novel creature is an animal?