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
The USDA has been following hormone use in the cattle industry since the 1950s. The hormone is given to the cattle in pouches inserted into the ear. The hormone enters the bloodstream of the animal very slowly, and according to the USDA the hormones never enter the human food chain. According to the USDA the use of growth
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.
In a lab we looked at the effects of different temperatures on the rate of oxygen consumption and nitrogen excretion in the goldfish. we found that oxygen consumption and nitrogen excretion both increased as the temperature increased. What are some reasons for these increses in oxygen consumption and nitrugen excretion with in
Is it fair (correct) to state that environmental temperature exerts more significant effects on oxygen consumption and ammonia excretion in poikilotherms than endotherm animals? Why?
List the levels of organization of the body, in order of incresing complexity, beginning with the cell.
What physiological states or traits (eg. feeding, exercise, aestivation) may affect the nitrogen excretion rate and oxygen consumption in the goldfish?
Is oxygen consumption the ideal indicator for the metabolic rate in all animals under all circumstances? why or why not?
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
I'm having trouble understanding the Assimilation and Production Efficiencies for Endotherms and Ectotherms. How do you determine which has the most efficiency?
Please only take this problem if your answer can not be complete and understandable. Thank you! Describe the storage and release of triglycerides of adipose cells on a molecular level, and describe the hormonal control of this process.
Please see the attached problem for specifics. Thank you
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?
I am doing a seminar on the adaptation of the bird respiratory system to flight, but I am having some trouble finding journals that are useful to me. I need to find a minimum of 3 primary resources. I was just wondering if someone could help me find some.
This job aims to discuss the impact the mammalian grade of organization has had on the evolution of the biosphere.
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
You find that out of 20 of red wolves released, 18 survive, and out of 10 brown wolves released, 4 survive. What is the relative fitness of red and brown wolves? I have the fitness of the red wolves (favored genotype?) as 1, but I keep getting a negative number for the brown wolves' fitness.
155 wolves 65% are red wolves 35% are brown wolves -- all carry brow allele 48% of red wolves carry recessive brown allele What is the probability that a wolf carries brown allele? These areas are encompassed.
What is the taxinomical classification of the coquerel's sifaka (lemur)? Ideas and links are given.
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
What the three primary vesicles in the amphibian brain and what are their primary functions?