In flatworms gas exchange, nutrient transport, etc. involves diffusion alone a blood vascular system a pseudocoelom a coelomic circulatory system

. Describe the likely origins of the fire ant. Describe two biological characteristics that enable them to thrive.

Compare the tilapia feeding in an extensive system to tilapia feeding in an intensive system.

All animals... (select all correct statements) are multicellular have true tissues are photoheterotrophs are unicellular are chemoheterotrophs are chemoautotrophs

The aquiferous system of a leucon sponge and the gastrovascular cavity of large anemones are both a series of water filled spaces that penetrate through the "body" structure of these respective organisms and are used to address many of the same basic needs (ie feeding, exchange, reproduction).  Your task in this assignment is to 1) identify one such need that is addressed by both these systems (ie same need being addressed by these two systems) making sure to point out similarities and/or differences in how this need is addressed by these two systems and 2) identify one unique use that each of these systems address (ie one use by the aquiferous system that is not a use of the GVC and vice versa).  As always make sure you utilize the comparative approach in your answer.

For the symbiotic relationship between termites and protozoa - the termite provides a favorable environment and the protozoa degrade cellulose, releasing nutrients for the termite. What is this is an example of? οιοο O protocooperation O commensalism O mutulaism O predation O competition

The digestive tract of these cloth moth larvae is a strongly reducing environment. Why is this beneficial to them

1) Electric eels are dependent on air breathing. They take up oxygen from the air that they gulp into their mouths and then blow back out. In what way are their mouths similar to gills? A) They both bring oxygen against its concentration gradient from the lower levels in the water or air to the higher levels in the blood. B) They both have large numbers of capillary beds very close to the skin. C) They both have large numbers of microvilli in their respiratory membrane to provide ATP for active transport of oxygen. D) ALL of these are correct. 2) Which of these accurately describes the buccopharyngeal pumping mechanism teleosts use to breathe? A) The volume of oral cavity is rapidly expanded with the mouth closed and the operculum open. B) The volume of the oral cavity is rapidly compressed with the mouth closed and the operculum open. C) Water from the surroundings is sucked into the gills during inspiration and blown back out during expiration. D) ALL of these are correct.

Which mechanism is responsible for bursting of marine fish when placed in tap water?

Describe the means by which the protists carry out their “basic functions”.