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Hi, we are Pablo Valdorato,

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Alba Mateos,

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Gloria González,

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Jorge López,

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and we are going to talk about the invertebrates.

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Inside the invertebrates we have the arthropods.

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They are invertebrates with a bilateral symmetry

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and a body with an exoskeleton that is like a shell.

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Inside the arthropods we have the insects,

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the arachnids,

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the crustaceans,

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And we are going to talk about the insects

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They are mandibulated arthropods

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They have a head, a thorax, an abdomen

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And some of them have wounds

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Why are insects important?

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They are important for the environment

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For example, the bees

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The bees help us for pollination

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And to reproduce the plants

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What are insects like?

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Insects are

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symmetric

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They have a titular exoskeleton

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a three part body

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the head, the thorax

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and abdomen and sometimes

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they have wings

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The insects

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They may be found in nearly all environments

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although only a small number

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of species reside

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nos oceanos.

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Os arteropodes

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poden ser divididos

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en aracnides,

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mediapodes,

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crustáceas

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e insectos.

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Outros

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exemplos

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de

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insectos

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son

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dragón

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fly,

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dragón

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beetle

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e

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dragón

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bob.

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Características

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Outros

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características

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Insectos

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grow in constiñid

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by the inelastic

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exoskeleton and development

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involved in a series of

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mollets.

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Nutrition of the insects.

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How is it?

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Insects are carnivores,

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can be also carnion eaters,

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parasites, or herbivores.

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Feeding and digestion.

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The digestive system

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consist on a tube

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and something like it

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extends from the mouth

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to the anus.

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It is divided

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into three regions,

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the estomodeo,

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mesentererón

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and protopdeo.

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Each of these regions

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can be subdivided

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into regions.

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There are valves

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and spinzers

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that regulate

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the passage of food

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from one to another.

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Respiratory system.

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They have a tracheal system

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that consists

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on air sacs

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que acumulan o ar,

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espiráculos

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que consisten

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en

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roxos

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que absorben o ar

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e tráquea.

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Como obtenen oxígeno?

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Obtenen oxígeno

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con espicules.

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O sistema circulatorio

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consiste, basicamente,

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on a tubular heart

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located in the pericardial cavity

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whose main function

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is to move the hemolim

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through the only blood case

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the dorsal aorta.

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How do they transport substances?

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Blood is pumped

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by muscular hearts into large open space

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between the tissues of the body

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circulated by vessels

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that will bring it back to the hearts.

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And finally, excretory system.

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dan presente

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un excretory system

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formado por

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so-called

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molfegri

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tubos

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que operan

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en conjunción

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con

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especialidades

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glándulas

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na pared

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do recto.

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Como perceben

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o estímulo?

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Perceben

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o estímulo

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através

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dos oídos,

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dos nervios

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e dos pés

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e

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dos áncenas

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e da pele.

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detectan

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algo

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que se come

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a terra

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através destas

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cuatro

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cosas.

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Como

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coordinan respostas?

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Coordinan respostas

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através do sistema nervioso.

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Provide

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a capacidade de

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coordinar.

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Interact

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The arthropods

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have a nervous system

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that means that the head

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says all the things

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and the body interprets

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Reproduction

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Do they have

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sexual reproduction

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or asexual reproduction

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They have

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sexual and asexual reproduction

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a sexual reproducción

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é via

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budding

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e a sexual reproducción é via gametes

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e eles son ovíparos

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que son os ovíparos

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a conclusión

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do nosso proxecto é

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que temos falado

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de moitos insectos

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e a reproducción

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a interacción

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e moitas cosas

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e encontramos as referencias

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E isto é todo, esperamos que vos guste.