... Dioecious with sperm
or eggs produced in 2
or more gonads in
Larval stage =
7th grade ch.1 animals test
... 75. What is the term for asexual reproduction in sponges? Explain how the new individual forms.
76. One type of coral, called a soft coral, does not produce a hard skeleton. Would soft corals to build coral reefs?
Explain why or why not.
77. Suppose you find a worm in the soil. How can you tell whic ...
factors influencing recruitment strategies
... Price (2007) defines strategic recruitment as identification of real recruitment needs and
fulfilling those needs. The organization‟s human resource needs are tied to the overall
business plan. The needs are in terms of numbers, quality, specialized skills and talents in
every area of the organizati ...
Remember:There may be sub-groups and supra-groups
Depletion and Social Reproduction
... services that are supplied to units other than their producers, or intended to be so
supplied, including the production of goods or services used up in the process of
producing such goods or services” (SNA 2008, 98; our italics). This production relies
on social reproduction (and we argue depletion) ...
Social semantics: how useful has group selection been?
... not only correct and a potentially useful tool (it can be
useful to look at things from multiple perspectives), but
that it often leads to considerable confusion (West et al.,
2007b). In contrast, the kin selection approach is easy to
both use and apply to real biological cases (West et al.,
Criticism and a First Selectionist Metamodel for the Growth of
... The creation of this dissertation parallels its own topic: a continuous process of
trial and error. The ability to run trials requires freedom of thought, the will to
question any supposed acquired knowledge, the confidence to propose novel
ideas, and the recognition of change and diversity. Additio ...
The Homeopathy of Kin Selection
... behavior directed to relatives. Since it is a propensity to favor kin over non-kin and close kin over distant kin, van den
Berghe also calls it nepotism. Indeed, the intensity of kin
selection is proportional to the coefficient of relatedness
(of the donor and the recipient of the altruistic act). R ...
Charles Darwin Meets Amoeba economicus: Why Natural Selection
... The idea that organisms are rational, called the “Organismus economicus” hypothesis,
stands in stark contrast to the old-fashioned idea of organisms as programmed or self-operating
machines, which shall be named the “Organismus automaton” hypothesis. If the Organismus
automaton hypothesis is, at lea ...
... swimmers and surfers who accidentally brush up against it in the water.
Full Text - UoN Repository
... concur with these authors and contend that Balanced Scorecards Strategy considers financial
indicators as one of the critical measures o f firm performance. Strategies are forward looking,
designed to be accomplished several years into the future. Steiner (1979) contends that formal
strategic planni ...
Running head: The evolutionary genetics of personality
... the phenotype is potentially visible to natural selection, though to varying degrees. Of course,
those rare mutations that actually increase fitness will tend to spread through the population,
driving adaptive evolution. Selection is most obvious against mutations that lead to
premature death or ste ...
Household Strategies: their conceptual relevance and analytical
... practices of households and at the way in which economic relationships are socially embedded
(Granovetter 1985). In other words, this involves using a more substantivist or anthropological
approach to the issue in research. Such practices are governed not so much by formal as by
informal rules and ...
Interacting Phenotypes and the Evolutionary Process. II. Selection
... estimates of the force of social selection that can be used
to model the evolution of interacting phenotypes when
combined with the appropriate genetic model.
Social selection can be viewed as one component in the
partitioning of selection (Arnold and Wade 1984a, 1984b;
Frank 1997). When the charact ...
Weatherhead, P.J. and Blouin-Demers, G
... slower mass growth and reduced RCM of reproductive females. A rigid
transmitter in the body cavity and a flexible antenna running under the skin could
affect a snake's constricting ability, although the transmitters were always less
than 3.8% of a snake's SVL. Second, the cost of transporting transm ...
Adaptive Dynamics with Interaction Structure.
... network topology. Models have also been studied in which
the state includes individuals’ ages, developmental stages,
memories of past events, and/or states of health, as well
as the environmental conditions each of them experiences.
An IBEG model must incorporate a scheme for designating when game i ...
Chapter 26: Sponges, Cnidarians, Flatworms, and Roundworms
... not develop endoderm or mesoderm,
so they do not have cells organized
However, the cells of a sponge are
organized. If you took a living
sponge and put it through a sieve,
you would witness a rather remarkable event. Not only would you see
the sponge’s many cells alive and separated ou ...
Morphological traits: predictable responses to macrohabitats
... potential to offer a general understanding of species turnover in response to environmental
change (Gibb & Parr, 2013). Therefore, understanding the function of species through a
trait method may advance ecological knowledge.
Species possess a large range of functional traits, including behavioural, ...
... Form and Function
Encystment and Excystment
Unicellular forms amazingly successful in
extremely harsh conditions
Related to the ability to form cysts
Dormant forms that shut down metabolism
and have a resistant external covering (secreted
by Golgi apparatus)
Encystment is not found in Parameci ...
Natural and sexual selection in a monogamous historical human
... sets the upper bound on the force of sexual selection that can act
on any phenotypic character and can be measured as the variance in relative mating success, i.e., the variance in absolute
number of mates divided by the square of the mean number of
mates (27). In our sample, it can be computed dire ...
... Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
EEB 4275 (Invertebrate Zoology)
... body cavity configuration (acoelomate vs. blastocoelomate vs. eucoelomate), bilateria vs. radiata, protostome vs.
deuterostome; level of organization: cell, tissue, organ/organ system etc., general habitat (e.g. freeliving/parasitic;
marine, etc.), solitary/colonial, etc. You should have some idea o ...
Life history theory
Life history theory is a theory of biological evolution that seeks to explain aspects of organisms' anatomy and behavior by reference to the way that their life histories - including their reproductive development and behaviors, life span and post-reproductive behavior - have been shaped by natural selection. These events, notably juvenile development, age of sexual maturity, first reproduction, number of offspring and level of parental investment, senescence and death, depend on the physical and ecological environment of the organism. Organisms have evolved a great variety of life histories, from Pacific salmon, which produce thousands of eggs at one time and then die, to human beings, who produce a few offspring over the course of decades. The theory depends on principles of evolutionary biology and ecology and is widely used in other areas of science.