Invertebrates
- Without spinal column
- Multicellular
- Eukaryotic
- Motile
- Mode of nutrition: ingesting food (either on plants or other living things)
Examples: Protozoa, Annelids, Mollusks, Echinoderms, Crustaceans, Arachnids and Insects
Characteristics:
Characteristics:
Mollusks
-Have a soft limbless body (bilaterally symmetrical)
-Have a soft limbless body (bilaterally symmetrical)
-Cold blooded
Protozoa
-Single-celled eukaryotes
-Reproduce by splitting in half
Annelids
-Their body is segmented both internally and externally
-Have long cylindrical body
Arachnids
-Have a hardened exoskeleton
-Have paired jointed appendages
Insects
-Have 3 body parts
-All insects grow from eggs
Crustaceans
- All have gills
- Excretory organs are near the antennae or maxillae (the jaw or jawbone)
Echinoderms
- All marine
- Known as spiny-skinned animals
Source:
http://www.scienceclarified.com/images/uesc_06_img0326.jpg
Key Characteristics of Invertebrates
-Invertebrates do not have a backbone
-Invertebrates do not have a cranium
Examples:
-Sponges
-Jellyfish
-Corals
-Flukes
-Tapeworms
Done by: Stacey, Naveena, Gwen and Michelle
Key Characteristics of Invertebrates
-Invertebrates do not have a backbone
-Invertebrates do not have a cranium
Examples:
-Sponges
-Jellyfish
-Corals
-Flukes
-Tapeworms
Done by: Stacey, Naveena, Gwen and Michelle
1. I have learnt that Invertebrates do not have a spinal column, and neither do they have a cranium.
ReplyDelete2. I have discovered that invertebrates do not have an internal skeleton made of bone, instead, they have a fluid-filled, hydrostatic skeleton. Others have a hard outer shell.
I have learnt that invertebrates do not have a spinal column and a cranium. Invertebrates are also eukaryotic and motile. Their mode of nutrition is by ingesting food either on plants or other living things.
ReplyDeleteI have discovered that many invertebrates have a fluid-filled, hydrostatic skeleton, like the jelly fish or worm. Others have a hard outer shell, like insects and crustaceans. There are many types of invertebrates. The most common invertebrates include the protozoa, annelids, echinoderms, mollusks and arthropods.
~Jia Le
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ReplyDeleteI have learnt that arachnids (spiders) are invertebrates.
ReplyDeleteI have discovered that invertebrates make up 95% of all the animal species.
I have learnt that most animals are invertebrates and that insects take up most of the population living things. I also learnt the the human population is just a small fraction compared to the world. I also learnt that all crustaceans have gills to breathe.
ReplyDeleteFrom this reading I have learnt there are different types of vertebrates.
ReplyDeleteFor example there are mollusks, protozoa, annelids, arachnids, insects, crustaceans and echinoderms.
I have also learnt that invertebrates do not have a cranium.
I have discovered that there are 97 invertebrates to every 3 vertebrates.
Rayner
I learnt that invertebrates have no spinal column and an example is corals, jellyfish and octopus.
ReplyDeleteI discovered that the simplest invertebrates and simplest animals are sponges ( which are animals which live in marine and freshwater habitats).
I have learnt that invertebrates have no spinal cords and has segmented bodies.
ReplyDeleteI discovered that invertebrates take up 95% of the whole worl.
I have learnt that insects, despite their straight exoskeletons, do not have backbones.
ReplyDeleteInvertebrates like ants have do not a cranium to protect their brains.
I have learnt the the spinal column hold the spinal cord.
I discovered that, if the evolution theory is true, all life had originated from simple life under water.
I have learnt that crustaceans are called spiny-skinned animals.
ReplyDeleteI have discovered worms which are invertebrates, don't have rigid skeletons, instead, they use something like hydraulic pressure.
I have learnt that the excretory organs of a crustacean are near the antennae or maxillae (the jaw or jawbone).
ReplyDeleteI have discovered that invertebrate are often studied within the fossil discipline called invertebrate paleontology.
I have learnt that invertebrates occupy 98% of all living things.
ReplyDeletei have discovered that invertebrates cannot adapt as fast as other living things.