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asked ago in Biology & Microbiology by
1. During gastrulation, muscle cells and connective tissues are formed from the endoderm.
2. Sand dollars, a kind of marine echinoderm, release their gametes into the surrounding water to be fertilized through spawning, producing large numbers of offspring. They do not care for their young, many of which are eaten by predators. Therefore, this organism exhibits a type III survivorship curve.
3. A graph of a typical exponential growth curve will be J-shaped, as exhibited in the early growth pattern of bacteria.
4. The chance of survival of an individual sparrow during an unusually hot summer is independent of that species’ population density.
5. Economic development in a country can change its population’s age structure to a conical shape.
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answered ago by
 
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1. False
This statement is false. During gastrulation, muscle cells and connective tissues are formed from the mesoderm.
2. True
This statement is true. Because sand dollars produce large numbers of offspring, but do not care for or protect their young from predation, they exhibit a type III survivorship curve, where mortality is higher in their young.
3. True
This statement is true. A graph of a typical exponential growth curve is J-shaped, as exhibited in the early growth pattern of bacteria.
4. False
This statement is true. The chance of survival of an individual sparrow during an unusually hot summer is independent of that species’ population density.
5. True
This statement is true. Economic development in a country can change its population’s age structure to a conical shape.
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answered ago by
Thank you, are you on the expert forum?
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answered ago by
Big help and thanks.
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