![]() ![]() ![]() You can tell the difference between toad spawn and frogspawn by the shape of the eggs, toad spawn is long pearl-like ribbons of eggs rather than large clumps that forms with frogspawn. These animals look very different as babies than their parents do (which is one way that frogs snakes differ ). Metamorphosis is a big word that means changing from one form into another. Which of the following hormones controls metamorphosis in a frog Adrenaline Insulin Oxytocin Thyroxine Correct option: Correct option: This hormone. It is found just below the surface of shallow, still water, usually amongst dense vegetation to give the eggs some protection. Other animals (including beetles, frogs, and butterflies) go through a process called metamorphosis. The female lays hundreds of eggs to increase the chances that more will survive to adulthood, as they are vulnerable to a number of predators, only around one in 50 eggs make it.įrogspawn appears in ponds in early spring when the weather is just starting to get warmer and the days lighter. The males fertilise the eggs by spraying them with sperm. When mating, a male will attach himself to a female and they will remain attached for up to 24 hours while eggs are laid and fertilised. Freshly laid eggs are small and compact but as soon as they enter the pond they start soaking up water until they swell up to their full size.įrogs will often return to the pond where they born and will repeat this journey year after year. AT metamorphosis and the transition from a purely aquatic to semitcrrcstrial life, frog tadpoles undergo profound biochemical changes. Alongside this process, lungs form to allow the young frog to breathe above water. The tails gradually are absorbed into the body. Each one is covered with a jelly-like casing, which keeps the eggs moist and also binds them together to protect the tiny tadpoles within. After about 16 weeks from when tadpoles hatch, the legs begin to form, followed by the arms. It all starts with hundreds of tiny black eggs, which bunch together in large clumps.
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