Answer:
Simply it states that the progress of development of an organism is a recapitulation of the organism's evolutionary history, and thus its progeny.
Explanation:
Hence based on this the stages of developments of an embryo are similar to developments stages seen in adult forms.Therefore it is can be stated as recapitulation of phylogeny by ontogeny . Thus the developmental stages observed in an embryo, are summary oft he adult forms of its progeny.Therefore, studying this developmental stages in an embryo is in effects studying the diversification of life on earth, and its history.
In summary the developmental stages of the embryo is a good method to detect the similarities between taxa, and findings from these can provide evidences that their is a common ancestry for all species of organism on earth.
Answer:
It pumps water out of the cell; as water enters the organism's cells via osmosis (diffusion of water), the contractile vacuole acts very much like a pump to allow water to exit the organism; without it the organism would die. Also, homeostasis is maintained in this manner; all it means is a condition of stability.
Large blue whales that are up to 30 meters long live primarily on krill that is/are only about 6 cm long.
Blue whales belong to the class of mammals. They are the largest animals on the Earth. They live in marine habitat. They can be more than 100 feet long. The weight of a single whale can be equal to 30 elephants. And they can live for as long as 80-90 years.
Krill are small animals belonging to the class of crustaceans. They are present in oceans. Krill are actually zooplanktons. They are majorly the food of whales. Krill are filter-feeders.
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Hi , the function of DNA is to give genetic instruction to organic beings.
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