--- title: Babies: eggs, live birth, pouches and parents — a lesson of Mova's school · trees and pragmatics description: «Babies: eggs, live birth, pouches and parents», a lesson of the biology course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Animals have babies in three main ways: they lay eggs that hatch outside, they give birth to live young that grew inside the --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/49-babies/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/) / Babies: eggs, live birth, pouches and… # Babies: eggs, live birth, pouches and parents Lesson 49 of the biology course of Mova's primary school: 16 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/biology/49-babies/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/0/) — Animals have babies in three main ways: they lay eggs that hatch outside, they give birth to live young that grew inside the mother, or, like kangaroos, they give birth to tiny babies that finish growing in a pouch. - [2](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/2/) — If your school has an incubator, watch a chick peck its way out with the tiny hard tip on its beak after about 21 days: it is the same egg you could have had for breakfast, but with a rooster in the farmyard. - [3](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/3/) — Cartoons give every baby a mum who does all the work and a stork that brings it; in real life the seahorse dad carries the eggs, the cuckoo mum tricks other birds into raising her chick, and the crocodile mum carries her babies gently in her jaws. - [4](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/4/) — A red kangaroo is born after only about 33 days, the size of a jellybean, crawls into its mother's pouch to drink milk, and stays there about 8 months. - [5](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/5/) — An emperor penguin father keeps the egg on his feet under a fold of belly skin for about 2 months of Antarctic winter, eating nothing, while the mother feeds at sea. - [6](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/6/) — In seahorses the mother puts her eggs into a pouch on the father's belly, and after a few weeks he pushes out the babies, sometimes hundreds or even over a thousand. - [7](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/7/) — A chicken egg takes about 21 days to hatch if kept warm; the chick cracks the shell with a hard tip on its beak called the egg tooth, and supermarket eggs never hatch because no rooster was there. - [8](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/8/) — Cuckoos lay their eggs in other birds' nests; the cuckoo chick pushes the other eggs out, and its loud begging, which sounds like a whole nest of hungry chicks, makes the foster parents, such as reed warblers, feed a chick much bigger than themselves. - [9](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/9/) — An elephant carries her baby for about 22 months, longer than any other land animal, because a big animal with a big brain needs a long time to grow; the calf weighs about 100 kg and is looked after by its mother, aunts, sisters and grandmothers. - [10](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/10/) — A newborn blue whale is about 7 metres long and drinks very rich milk, often quoted at about 380 litres a day; whale babies are born live under water, usually tail first. - [11](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/11/) — A sea turtle lays about 100 eggs in the sand at night and never sees her babies; after about two months the hatchlings dig out and head for the brightest horizon, which on a natural beach is the sea. - [12](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/12/) — In sea turtles and crocodiles the warmth of the nest decides whether babies become male or female, and bright lights on beaches can lead turtle hatchlings the wrong way. - [13](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/13/) — A mother crocodile digs open her nest when the babies squeak inside the eggs, carries them gently to the water in her mouth and guards them for weeks or months. - [14](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/14/) — A giraffe is born with a drop of about 1.5 to 2 metres to the ground, is already about 1.8 metres tall, and usually stands within about an hour; the drop helps break the birth sac and start the baby breathing. - [15](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/15/) — The adder, Britain's only venomous snake, gives birth to live young, each in a thin skin it breaks out of at once; a mother keeping eggs inside can warm them by basking, and some sharks also give birth to live young. - [16](https://md.mova.elamur.ai/free/en/corpora/school/biology/49-babies/16/) — A newborn human baby has about 270 to 300 bones and pieces of cartilage, many of which fuse to leave 206 in an adult, and human babies need their parents for many years. - ← previous: [Life cycles and metamorphosis: frog, butterfly, ladybird](https://md.mova.elamur.ai/free/en/corpora/school/biology/48-life-cycles-metamorphosis/) - next →: [How animals talk](https://md.mova.elamur.ai/free/en/corpora/school/biology/50-how-animals-talk/) - ↑ back to [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/)