Lab 8: Invertebrate Anatomy Flashcards Preview

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Flashcards in Lab 8: Invertebrate Anatomy Deck (26):
1

Which two phyla encompass much of the morphological, ecological, and species diversity within the clade Bilateria.

Mollusca and Arthropoda

2

Two phyla (Mollusca and Arthropoda) encompass much of the morphological, ecological, and species diversity within the clade __________.

Bilateria

3

Mouth develops from the blastopore.

Protostome

4

Mollusca and Arthropoda are __________ groups.

Protostome

5

Mollusca and Arthropoda have very different __________ and __________ systems.

Musculoskeletal and circulatory

6

The Mollusca belong to the __________.

Lophotrochozoa

7

The Arthropoda belong to the __________.

Ecdysozoa

8

Mollusca comes from the Latin "molluscus" meaning:

Soft

9

A __________ covers the internal organs of Cephalopods.

Mantle

10

The shell has been __________ and __________ in the squid.

Reduced, internalized

11

The __________ __________ has been modified in cephalopods into the tentacles, parts of the head, and a muscular excurrent siphon.

Muscular foot

12

Arthropoda comes from the Greek arthropod meaning __________ __________.

"Jointed feet"

13

Arthropods have hard __________.

Exoskeletons

14

Today's lab will examine the __________.

Crayfish

15

Branched.

Biramous

16

Crustaceans are known for their serially __________, __________ appendages that have been extensively modified to perform specialized tasks.

Homologous, biramous

17

__________ are the only Arthropods with 2 pairs of antennae.

Crustaceans

18

Squid also have a separate __________ __________ which lies directly between the gills.

Systemic heart

19

The __________ and __________ comprise the squid's skeleton.

Gladius, cranium

20

The __________ is the long, translucent, plastic-like structure that runs the length of the body and supports the mantle and internal organs.

Gladius

21

Looks like a long, dark tube that opens near the funnel.

Ink sac

22

Running parallel to the ink sac is the __________ which ends at the __________.

Intestine, anus

23

The large white mass located at the posterior end of the mantle.

Caecum

24

The __________ lies anterior to the caecum and contains visible folds; it looks like a piece of chewing gum.

Stomach

25

Structures within an organism exhibit __________ __________ if the structures are repeated and have similar developmental organs.

Serial homology

26

Walking legs

Periopods