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What are the stages of development?
Unfertilized egg, fertilized egg, early clevage, late clevage, blastula, gastrula, larva
UFELBGL
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During the cleavage stages the overall size of the zygote
(increases/decreases/remains the same) as it
divides into numerous smaller cells called _______.
remains the same, blastomeres
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Cell differentiation begins during the ______ stage.
gastrula
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During the _____ stage 3 germ layers are formed. What are the names of the three layers?
- Gastrula
- Ectoderm, endoderm, mesoderm
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Name at least one tissue/organ/system
that is derived from each of these germ layers.
ECTODERM- NERVOUS SYSTEM, EPIDERMIS
- ENDODERM- INNER
- LINING OF DIGESTIVE SYSTEM
- MESODERM- SKELETON,
- MUSCLES, CIRCULATORY SYSTEM, AND OTHERS
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The starfish gastrula develops into a
free-moving ____ which then undergoes the
process of _____ into an adult.
larva, gastrula
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A population's _____ _____ is an intrinsic factor that tends to increase population growth.
biotic potential
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______ ______ is an extrinsic factor that tends to reduce the growth rate of the population.
Environmental resistance
-
Give some examples of density-independent factors that affect population size.
weather condition, natural disasters: fire, flood, hurricane, tornado
-
Small populations are affected (more than/less than/ the same as) large populations by density-dependent factors that affect population size.
less than
-
Give some examples of density-dependent factors that affect population size.
predation, competition (for food, space, mates, etc.), disease
-
What is carrying capacity?
Maximum population size that can be sustained in a given environment
-
The difference between the carrying capacities of the two populations of paramecia was due to _______ __ ____ ______.
differences in food supply
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What is symbiosis?
Living together in close association
-
-
-
-
Give 2 examples of mutualism
- Anemones/zooxanthellae,
- paramecia/zoochlorellae, lichens, and others
-
Give 2 examples of commensalism
- Barnacles on
- mollusk shell, barnacles on whales
-
Give some examples of ectoparasites
flea, tick, leech
-
Give some examples of endoparasites
tapeworm, roundworm
-
The relationship between the sea anemone and the zooxanthellae can be described as (mutualistic/commensalistic/parasitic).
mutualistic
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How did the bleached anemones differ from the non-bleached anemones?
pollution, changes in temperature (global warming)
-
What is a simulation?
A model that allows us to reconstruct a natural situation to better understand its components
-
Which characteristic of the prey items was responsible for the differential succes of the predator in the different habitats?
color
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What is a generalist predator?
Can utilize a wide variety of resources
-
What is a specialist predator?
Can utilize one or a few types of resources
-
How might factors such as specialization and competition affect the rate at which a predator can collect prey items?
Should slow down the rate of foraging
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When the predator had "red vision" and the orange prey were toxic, what role did mimicry play in determining the types of prety items taken?
Those prety that resembled (mimicked) orange (red and yellow) should be most avoided
-
What are the six kingdoms of life?
bacteria, achaea, protista, plantae, fungi, animalia
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