Question

Summer sleep of cold- blooded animals is called as
(a) Hibernation
(b) Neoteny
(c) Aestivation
(d) Paedogenesis

Answer 1

This is a strategy used mainly by desert and tropical animals to urge through extremely hot and dry weather. To survive, animals probe the bottom where they continue to be idle and funky.

Complete step by step answer:
Aestivation is a way in which they decrease their metabolic activity, save energy, conserve water in their bodies and protect themselves from dying thanks to intense heat and dryness.
Examples:
- Snail: Some creatures that are aestivating can rapidly return to their normal condition when there's a requirement to. Certain snail species can return to their original state after only ten minutes of estivation. However, some animals are capable of estivation for long periods of your time
- Lungfish can aestivate for as long as three years by coating itself with mucus that preserves the moisture inside its cocoon when it's dormant. Lungfish is additionally a primitive fish that also has lungs so it can breathe without water.
So, the correct answer is ‘Aestivation.’

Additional Information:
- A hibernating animal will enter into a really ‘deep sleep’ during winter. While during a state of true hibernation, the animal will appear to be dead.
- Most animals aren't capable of hibernating because they lack the quantity of fat. Animals that hibernate are also placed on another sort of fat called “brown fat”.
- The stored fat is going to be used when the temperature gets colder within the winter.
- Hibernation isn't an endless process. Some animals may awaken from hibernation to eat and drink.
- Bears aren’t true hibernators. They're more like light hibernators. Rather than hibernating, bears enter what's called a torpor. The biggest difference between torpor and hibernation is that in torpor the animal is definitely awoken. Bears enter torpor during the winter months as long as they sleep in cold areas. During their torpor, they don’t eat or drink for about 6 months on the average.
- The delay or slowness of physiological development of an organism is known as neoteny or juvenilization.
- Paedogenesis also known as progenesis is the acceleration of sexual development and the reproduction occurs usually without fertilization.

Note:
- Bats enter a real hibernation, meaning they're in such a deep sleep that they'll appear to be dead.
- A bat's pulse drops from 400 to 25 beats per minute, and its breathing slows so that it'd not take a breath for up to an hour. Bats hibernate within the cavities of huge trees, caves, old mine shafts, and old wells. Hibernates alone or in a group.
- Dolphins estivate, or sleep, within the summer. They will sleep standing up or bedded down on the bottom. Bottle- nosed dolphins sleep during the night, floating a few feet under the water.
- Hedgehogs also enter estivation when the weather is basically hot. Estivation is like hibernation, apart from it takes place during weather, rather than weather. Other animals that use this system include crabs, lemurs, crocodiles, and desert hedgehogs.