Science Block 2 Unit 1 L2

Block 2

Living things and the environment.

Lesson 2

How do animals reproduce?

Amphibian

Vertebrate that can live both on land and in water and is mostly oviparous.

Bird

Vertebrate that has feathers, a beak, no teeth, wings and lays eggs.

Egg

Embryo

The oval or round object with a shell that a female animal lays.

Unborn but developing child or animal.

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Fish

Parent

Fertilization

Vertebrate that lives in water, breathes through gills and has fins.

The process of starting biological reproduction by insemination or pollination.

Mother or father

Mammal

Gestation

The period of development of a fetus; pregnancy .

Vertebrate that gives birth to fully formed young and breastfeeds them.

Hatch

Offspring

To come out of an egg and be born.

Descendants of a person or animal.

Male

Female

Person or animal that produces sperm.

Person or animal that produces babies or eggs.

Oviparous

Viviparous

Type of animal that lays eggs; amphibians, birds, most insects, fish, and reptiles are oviparous.

Type of animal that gives birth to fully formed young.

Vertebrate

Invertebrate

An animal that has a backbone.

An animal without a backbone

Reptile

Vertebrate that is mainly oviparous and has scales.

Shell

The hard outer covering of an egg.