Mollusks and Arthropod

TM
by Teacher MAS0 views·Updated Apr 7, 2021
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  1. Hi, my little Einstein.
  2. So today we're going to talk up.
  3. We're going to continue talking about the invertebrate groups.
  4. Where are we?
  5. Have Alex and Arthropods.
  6. So this group, this is kind of weird.
  7. So mullets are the second largest groups in the filing
  8. group. Them invertebrate groups.
  9. Majority of these animals live in the water.
  10. There's some of them that lives on land.
  11. So, for example, we have an octopus right here.
  12. There are squishy.
  13. They don't have any bones in them, and they just
  14. weird. These are the metallics.
  15. So let's take a look.
  16. So, for example, snail is part of the Mullets group
  17. as well, so you can see this little small right
  18. here. It's really cute.
  19. It has different parts of its body.
  20. We have a mantle, we have a shell and we
  21. have a critical mass.
  22. Now, these are the snails, the Octopus or slugs and
  23. all these.
  24. They're very soft bodies and squishy and all their invertebrates.
  25. So and that's why this question.
  26. They have no bones.
  27. The mantle is like their skin.
  28. Okay? It covers the whole body, and it's the skin
  29. all around the entire body.
  30. So it's like our skin the shell is what protects
  31. it. The shell is what protects their bodies.
  32. Because they're so soft and they have no bones, they
  33. can take up any shape.
  34. Also, the Vesco mask means it's everything inside their body,
  35. their stomach there, all the organs inside their stomach, their
  36. lungs. If they have lungs inside of a majority of
  37. them, don't.
  38. It's anything organs inside their bodies, their digestive systems, all
  39. of that.
  40. So that's why there are weird and squishy.
  41. So So we have these slugs or snails were on
  42. the bottom of their bodies.
  43. Is their their foot, their muscles as their foot.
  44. Okay, they don't have real feat like us.
  45. So these muscular foot, it helps them move around.
  46. It helps them basically walk or slug around with.
  47. The Octopus is in this squid.
  48. They have tentacles.
  49. They have eight tentacles, even more tentacles.
  50. And this is like their feet.
  51. This is what helps them.
  52. For example, swim around the octopus and the, uh, the
  53. squid they help it swim around might help it feel
  54. what's around them and all.
  55. So the snails have little feet or they say, feet
  56. on the bottom of their bodies.
  57. Guests bottom of their bodies.
  58. It helps them move.
  59. While the octopuses and squids they have tentacles to help
  60. them swim.
  61. If you ever seen them swim, it's really weird.
  62. They swim and also feel what's around them.
  63. So let's take a look.
  64. What else are the mullets?
  65. So we have clams, squids, oysters, cutter, fishes, slugs, snails.
  66. Majority of them are on water.
  67. Mm. There's some on land like slugs and snails.
  68. Those are on land, but majority of them are on
  69. water. You ever had clams or oysters are so good?
  70. Try that.
  71. You guys are gonna be like you, baby.
  72. It's okay Now.
  73. The arthropods arthropods are the gross ones.
  74. This is the largest group in the filing group.
  75. Okay, these are the spiders and the insects and the
  76. bugs and the creepy ones.
  77. Now, these are invertebrates because they have no bones into
  78. their body.
  79. But they have something called an exoskeleton exoskeleton.
  80. It means a hard skeleton or a hard shell on
  81. the outside of their body.
  82. This shell or this exoskeleton.
  83. Okay, they grow.
  84. They shed and grow new ones about 4 to 5
  85. times maybe a week or a month or anything like
  86. that in their lifetime.
  87. They keep growing a new one and it breaks and
  88. it starts shutting.
  89. And then they grow a new one, and then they
  90. shed and everything that keeps repeating over and over.
  91. So arthropods, spiders and the bees and the bugs and
  92. all that.
  93. They don't have any bones, but they are at.
  94. So skeletons, they have a their skeleton is on the
  95. outside their bones or this hard shell is on the
  96. outside. So, for example, we got a beautiful be right
  97. here. Okay, Now, in fact, they have three parts of
  98. their bodies.
  99. They have ahead, they have a far act, and then
  100. they had the abdominal mint.
  101. Okay, so here's a head.
  102. These are the four X.
  103. Okay. And then that's his abdomen.
  104. That part.
  105. So you see three different parts of his body.
  106. Yeah. Now each spider, insect or B and all that.
  107. They have different types of different amounts of legs and
  108. arms and all that.
  109. They also have antennas.
  110. Now, his antenna, it helps him sense or feel what's
  111. around him.
  112. There's also some animals, some insects.
  113. They only have two parts of their body.
  114. This is called a, uh to follow ra Suffer.
  115. Laura Thoren.
  116. It's very complicated.
  117. It is when the head and the authorities are together.
  118. So it's when this part of the B is together.
  119. It's connected together, so he only has two parts.
  120. So, for example, we have this little grasshopper.
  121. That's weird.
  122. Okay, so you see how big his antennas are.
  123. This antennas are is like his sentence, or like his
  124. nose. Okay.
  125. He can detect if there's different smells around him.
  126. He has centers.
  127. It's basically like a sensor.
  128. It can detect movement.
  129. It can detect sound.
  130. It can detect if there's chemicals coming somewhere around him.
  131. It literally tells the animals these animals what's going on
  132. around them.
  133. So they have these big antennas, tells them what's going
  134. on to record.
  135. And then this is my creepy one.
  136. I don't like these.
  137. Then we have spiders and scorpions.
  138. They creep me out.
  139. Okay. The spiders and scorpions are in the are tied.
  140. Donna, I don't It's Latin.
  141. Okay. These spiders and scorpions, they're found everywhere.
  142. Spiders and okay, Okay.
  143. I'm not just these are found everywhere and anywhere now,
  144. they only have two parts of the body.
  145. Okay, so remember how I told you the head into
  146. our exes together.
  147. So they have only two parts of the body and
  148. they have the first.
  149. Okay, so this is weird.
  150. They have the first pair of legs.
  151. So that's his head down there and his first pair
  152. of legs.
  153. That's like his antenna.
  154. Because he doesn't have any antenna.
  155. They don't have antennas.
  156. So his first pair of legs, that's what he senses
  157. and touches and fields, and he uses it to see
  158. what's going.
  159. He uses his these pairs of leg as his feelers,
  160. where it's a touch and sense.
  161. What's going on around him, The rest of those legs.
  162. The rest of those legs are there for walking and
  163. crawling and running and all that.
  164. So the first pair is for his head or his
  165. sensing. It's like his antennae because he doesn't have any.
  166. These are creepy.
  167. I'm gonna go now.
  168. This is the last group, and these are the same.
  169. The insect.
  170. These are the Crusaders.
  171. These are the ones that just exploited.
  172. But they live in land in the water, so they
  173. don't have lungs like spiders and all that.
  174. They got gills.
  175. They have gills.
  176. These are crabs.
  177. These are lobsters.
  178. These are shrimps where they live in the water.
  179. They got gills.
  180. They have two antennas.
  181. But some of them, if you can look at the
  182. picture. It's very small Antennas.
  183. Those antennas that helps them as well.
  184. Now their eyes are not in the front like ours.
  185. Their eyes on the side.
  186. They use these eyes on the side to see if
  187. their predator is around them.
  188. They get literally a more a white eyesight than we
  189. do. Like they have more variety as us.
  190. They can see on the side and all that.
  191. This group lives in the water.
  192. So again, this is the crabs, the lobsters, the shrimp
  193. and all these I hope you enjoyed.
  194. This wasn't.
  195. If you have any questions, please email your teacher.
  196. Thank you.