Birds descended form (#33) ____ that ran around on two legs some 160 million years ago. All birds have (#34) ______ that insulate and help get the bird aloft. Generally, birds have a greatly enlarged (#35) ____ to which flight muscles are attached. Bird bones contain (#36) ____ _____, and air flows through sacs, not into and o
Fill In the Blank: Use the below terms to complete the following paragraph. Four major features distinguish the embryos of chordates from those of all other animals: a hollow dorsal (#4) _______ _________, a(n) (#5) __________ with slits in its wall, a(n) (#6) _________, and a tail that extends past the anus at least during
There are three major classes of Cephalopods. Which of the following is a Cephalopod? a. Squid b. Conch c. Clam d. Snail Which type of Cnidarian body plan is less motile? a. larvae b. worm c. Polyp d. medusa What moves the Gastric Mill? A. wings B. tendons C. ligaments D. muscles What are th
All of the following adaptations have contributed to the success of the insects EXCEPT a. specialized sensory organs b. wings c. small body size d. aquatic habitat A water-vascular system is characteristic of the a. arthropods b. annelids c. chordates d. echinoderms Which of the following is not a member of the ph
The organs of excretion in flatworms are a. nephridia. b. contractile vacuoles. c. Malpighian tubules d. protonephridia. Animals that are hermaphroditic usually a. fertilize their own eggs. b. cross-fertilize. c. donate eggs to other individuals d. all of these A scolex is a. the anterior attachment organ of a t
Matching. Choose the most appropriate answer for each. 1a. ___ placozoa 1b. ___ annelids 1c. ___ arthropods 1d. ___ chordates 1e. ___ cnidarians 1f. ___ echinoderms 1g. ___ flatworms 1h. ___ rotifers 1i. ___mollusks 1j. ___ roundworms 1k. ___ sponges A. Trichoplax B. Vertebrates C. Planarians, flukes, tapeworms
Hi, I have created a study guide for my biology final exam coming up. Please choose which is the correct answer for each question. Thank you. 1. Natural selection is the process by which a) the age of selected fossils is calculated. b) organisms with traits well-suited to their environment survive and reproduce more. c)
What is it outside of the cells that causes the intracellular recordings to vary?
Would you expect ALL mammalian neurons to have functional NMDA receptors? Please explain your answers. I am looking for any feedback you can provide. I am happy to receive any feedback you may offer on this topic. Thanks much!
I am recording intracellularly from the neocortex of a mouse. If I place my electrode on one set of pyramidal neurons (Layer 2) and add fenfluramine (a serotonin uptake blocker), whithin 5 minutes the neurons produce GREATER amount of action potentials. But when I place fenfluramine while recording from another set of pyramida
The main purpose of analyzing a sample of wild canary song is to become familiar with song dialect pattern of geographic variation, identify dialect boundaries objectively, and gather some evidence of whetheror not dialect memberslikely have intimate social interactions.i have already got and analyzed rolls of sonograms of songs
What is the temperature coefficient? What is the appropriate equation for the temperature coefficient? Why is it relevant to animal physiology? What does it tell us about ectotherm metabolic rate and temperature?
What is the the pureraris thunbergian (VINE) KUDZU of I am requesting the classification schme of KUDZU: KINGDOM, Phylum, Class, Order, Family, Genus, and Species
1. Think about an arthropod such as an ant, and a vertebrate such as a lizard. what functions do the skeletons of there animals have in common? do they have a common structure? Explain. 2. Why do you think that spongry bone has an outer layer od compact bone? 3. Think about the possibible movements of your lower arms
I have to explain in detail the advantages of why animals live socially in groups and the advantages.
I'm conducting an experiment entitled the "Effect of volume on Carassius auratus growth". However, I'm uncertain of how often and how much to feed the gold fish. My experimental setup consists of a ten gallon tub (30 X 20 inches, about 6 inches deep) with five individual containers within, approximately filling a volume of 2 lit
Please help!!!! I need to know how to do this and I need a complete example of what is written below. I am lost trying to do this!!!! Please do not take this if you can not give me a complete detail answer for this question. It needs to be complete, and I need to be able to get a true understanding of what is involved in this. T
Some marine animals drink salt water, they excrete the extra salt through glands that produce a salty liquid. what transport process must be involved in moving the salt from the blood and into the gland? does this require energy?
Individual chi square questions 1. The data below was gathered in the Animal Behaviour lab. In this case, 5 zebra danios were placed in a container in compartment A of the aquarium and 5 goldfish were placed in a container in section C of the aquarium. The test fish, in this set of data was a zebra danio. Does this fish displ
Aerobic efficiency and fitness can be estimated using the following formula: INDEX = (Duration of exercise in seconds) x100 = 2(sum of first 3 pulse counts in recovery) Norms below 55 = poor 55-64 = low average 65-79 = average 80-89= good 90+= excellent
Behaviors of physiological adaptations that allow a small desert mammal to survive severe drought conditions include all of the following except: The absence of sweat glands Inactivity during the day The production of nearly dry feces The use of water derived from the metabolism of food The excretion of ammonia i
Is the cerebellum in the pigeon larger or smaller than that of the shark?
Discuss one way in which each of the mantle, the foot and the shell have diverged in the oyster, terrestrial slug and squid since these taxa shared a common ancestor. For each change that you mention, briefly indicate how this change reflects the different lifestyles of the oyster, slug and cephalopod.
What is the reproductive mechanism that allows for an offspring to inherit a trait that is expressed in neither parent?