Chapter 12 Invertebrates

Chapter 12- Invertebrates ___ are organisms in Kingdom ___ that do not have a ____ They don’t have any ___ at all Some have an ___, or ____ that is used instead of bones Most land invertebrates ___ Some ocean invertebrates ____

Types of Invertebrates ___ – The simplest ___ – Live in ___ – They ____ from the water that surrounds them – They are ___, which means they do not ___ and stay attached to ___

Sponges Sponges have ____, but do not have ___ Their cells make up an _____________ wall, with a hollow center Sponges eat by using tiny ___ on their cells to move ____ in and out

Sponges Sponges reproduce ___ The buds ___ and ___ to the ocean floor Some sponges can reproduce ___, however, by releasing __________ into the water to fertilize with other gametes The fertilized cells become ____, an immature form of an organism

Types of Invertebrates ________ – Ex: ________________ – Lives in _____ – Have a _______ for a mouth surrounded by ___ – This _____ both takes in food and eliminates waste

Cnidarians Feed on small _________ Most are _____ for most of their lives, but some can move around ______ on cnidarians have the ability to _____, which allows for them to _________and protect themselves from predators Each stinging cell has a __________, a capsule that colds a _______

Cnidarians The________ that make up a cnidarian’s body are ________ Tissues are ________ around a central opening where ________ and waste is released Basic muscle cells around the________ of the body allow for ________ Cnidarians can reproduce ________ and ________. Some use ________.

Jellyfish reproduction Jellyfish have an interesting life cycle Jellyfish ________ land on the ________ and attach to rocks As it grows, it turns into a________, which develops ________________ that stack up Tiny jellyfish that newly detach from the ocean floor are called ________ When they turn into________, they look more like jellyfish

Do Now 5/8 What do you know about worms? List at least 3 things

Types of Invertebrates ________ Soft, ________ and a distinct head – Some live ________ other animals – Others live in ________ or on land

Worms ________ have bodies divided into individual compartments – Example: ________ Their organs are organized into ________ like ours They have a ________, ________, nervous system, and ________ No distinct ________________ – a worm carries both types of gametes

Worms ________ are worms with the simplest bodies – Some are so small that they move due to ________ on their bodies, not muscles – They eat by ________ through their skin and live as parasites – Ex: ______ ________ are important ________ and are slightly more ________ than flatworms – Have a __________________________________ – Ex: nematodes

Types of Invertebrates __________ – Ex: ___________________ – Have a ________ that allows them to move and hunt for food – Some live on__________and others live in _________

Mollusks ________________ are considered ________, which means they have tentacles (but more advanced than cnidarians) Very ________ due to a developed nervous system and brain Have eyes, mouths, and complex organ systems

Mollusks Clams are considered ________, which means they have a ______________________ They eat by ________ and use gills to ________ from the water to “breathe” Snails are considered ________, which means they can move on their ________ Have ________ and can consume plants and algae

Types of Invertebrates _____________ – Ex: ________________ – ________ for defense – Live in water – Have a ________ for taking in food

Types of Invertebrates _________________ – Ex: ______________ – ________ covered by hard outer skeleton (________ ) – Found on _____________________ – Have legs – ________

Arthropods Exoskeleton has _______ to allow organism to move It doesn’t grow, so organisms will _____, or shed their________ so a new one can develop They have well-developed body systems, including a ________ No blood vessels, so blood moves freely Can be ________, which means they reproduce ________

Arthropods Insects have ________ attached to the middle segment (or ________ ) of the organism There are over ________ insect species Insects are ________, which means they are ________ Their mouths are adapted to the kind of food they take in – ___________________

Insects Insects undergo________, which means they undergo three stages from ________ to ________ (developing body) to ________ Arachnids are arthropods that have ________ – They are not insects Some can be ________ (ticks), but some can be ________ (spiders)