GROWTH DEVELOPMENT CHILD
GROWTH AND DEVELOPMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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By performing a special courtship dance
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By giving small gifts to the female
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By making its external colors much brighter
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By releasing its sperm and eggs at the same time
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Detailed explanation-1: -Under this theory, starfish shed their arms in order to increase the range of egg dispersion and thus increase the possibility of eggs being fertilized by neighboring male starfish. The host starfish then regenerates the lost arm through unidirectional regeneration.
Detailed explanation-2: -Spawning Aggregations in Starfish During spawning, starfish come together, forming groups called spawning aggregations. This increases the probability of the sperm and egg interacting and fertilization occurring.
Detailed explanation-3: -Starfish exhibit an asexual mode of reproduction through binary fission and regeneration. Starfish is a bisexual organism and undergoes regeneration as a method for asexual reproduction. In binary fission, the parent organism’s cell divides exactly into two genetically identical daughter cells.
Detailed explanation-4: -Starfish sexually reproduce by a process called spawning, with many individuals releasing great quantities of eggs or sperm into the water from their sexual organs, located in their arms.
Detailed explanation-5: -Male and female sea stars release their gametes through gonopores, located on the top (dorsal aspect) of the animal (Figure 2), and fertilization occurs externally in the seawater. Investigators can therefore spawn the animals individually in the lab, collect eggs and sperm, and fertilize en masse.