SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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in a soft shell
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in a cocoon
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in a nest for protection
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in a hard shell
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Detailed explanation-1: -Within the egg, a young earthworm develops until it is ready to hatch. The egg is encased in an egg casing called a cocoon. The number of eggs within one cocoon can vary between species, ranging between 1 and 20 from earthworm species in the family Lumbricidae (but most species have just 1).
Detailed explanation-2: -When mating, another worm and I join together with heads pointing in opposite directions. Sperm is passed from one worm to the other and stored in sacs. Then a cocoon forms on each of us on our clitellum. As we back out of the narrowing cocoons, eggs and sperm are deposited in the cocoon.
Detailed explanation-3: -Worms can produce anywhere between 3 and 80 cocoons each year and can continue to produce cocoons as long as their is a sperm supply. However, the species who reside deeper underground will produce less since they’re protected and can hatch without disturbance.
Detailed explanation-4: -After 30 days, and when conditions are right (temperatures of 65℉ to 85℉), the baby worms hatch. Each cocoon contains from 1-20 baby worms, but the average is 4-6.