Lesson 5c. Radiate Animals

Question 1

Radiate animals include two phylum

Answer 1

Phylum cnidaria
Phylum ctenophora

Question 2

Phyla characterized by radial or biradial symmetry and their body are arranged around a central axis

Answer 2

Radiate animals

Question 3

Body can be divided into mirrored halves only along 2 planes through central axis

Answer 3

Biradial symmetry

Question 4

Both have two well-developed germ layers

Answer 4

Endoderm and ectoderm

Question 5

Internal body cavity with a single opening (mouth and anus)

Answer 5

Gastrovascular cavity

Question 6

Simplest form of true nerve cells

Answer 6

Protoneurons

Question 7

They have the simplest form of sense organs

Answer 7

Radiates

Question 8

Maintain equilibrium and ocelli

Answer 8

Statocysts

Question 9

Radiates can move by ____ or _____

Answer 9

Muscular contractions
Ciliary comb plates

Question 10

3 classes of phylum Cnidaria

Answer 10

Class hydrozoa
Class scyphozoa
Class anthozoa

Question 11

All are aquatic and radial symmetry, sessile or floating

Answer 11

Phylum Cnidaria

Question 12

Type of body form that is tubular body with tentacles
Ex: hydra

Answer 12

Polyp

Question 13

Type of body form that is bell shaped and free swimming
Ex: jellyfish

Answer 13

Medusa

Question 14

This has representatives like hydra, obelia, Portuguese man-of-war

Answer 14

Class hydrozoa

Question 15

Class hydrozoa: a medusa form has a ______( ring of tissue that is found at the base of the tentacles)

Answer 15

Velum

Question 16

They are freshwater hydrozoa, sessile polyps, lives underside of aquatic leaves, 16 species found in North America

Answer 16

Hydra

Question 17

Length of 25-30 mm with cylindrical tube with stalk like end and an attachment end

Answer 17

Hydra

Question 18

Attachment end that contains gland cells to allow adhesion

Answer 18

Basal disk

Question 19

It has 6-10 tentacles that are hollow and extendable and contain nematocyst (stinging cells)

Answer 19

Hydra

Question 20

Outer layer or epidermis; contains 5 types of cells

Answer 20

Ectoderm

Question 21

Cell that is responsible for muscular contractions

Answer 21

Epitheliomuscular cells

Question 22

Undifferentiated stem cells that become most other types of cells

Answer 22

Interstitial cells

Question 23

Cell that secretes an adhesive substance that aids in the attachment process

Answer 23

Gland cells

Question 24

Cell that contain nematocyst

Answer 24

Cnidocytes

Question 25

Cell with multipolar neurons

Answer 25

Nerve cells

Question 26

Gastrodermis; inner layer that contains muscular, gland, and interstitial cells

Answer 26

Endoderm

Question 27

Jelly-like substance found b/w ectoderm and endoderm

Answer 27

Mesoglea

Question 28

Floats and moves by somersaulting motion

Answer 28

Locomotion of hydra

Question 29

When disturbed, it will contract and form a small ball

Answer 29

Response of hydra

Question 30

It has no brain, through budding or regeneration, occurs when temporary gonads develop in the autumn

Answer 30

Hydra

Question 31

It means cup animal

Answer 31

Scyphozoa

Question 32

Representative of class scyphozoa

Answer 32

Jellyfish (aurelia)

Question 33

_____ is for sexual reproduction. Zygote develops into a ____ which swims around and then settles to form the ____

Answer 33

Medusa form Planula larva Polyp form

Question 34

It has Tentacles of the medusa have nematocysts that give humans painful stings

Answer 34

Jellyfish

Question 35

All jellyfish contain a

Answer 35

Toxin

Question 36

Considered to be more dangerous

Answer 36

Box jellies

Question 37

Considered most deadly of the jellyfish

Answer 37

Irukandji

Question 38

1 cm³ (largest) , many are 5mm or less They are in Australia's coast

Answer 38

Irukandji

Question 39

Means flower animal

Answer 39

Class anthozoa

Question 40

Representative: sea anemone, coral

Answer 40

Class anthozoa

Question 41

Class that Lack medusa stage All marine (deep and shallow water) Solitary/colonial

Answer 41

Anthozoa

Question 42

Contain large gastrovascular cavity that is separated by division called

Answer 42

Septa

Question 43

Inward projections of the body wall

Answer 43

Septa

Question 44

Polyps of sea anemone are _____ and ___ than hydrozoan polyps

Answer 44

Larger Heavier

Question 45

Attach to shells, rocks, or timber by pedal discs. Some in mud/sand

Answer 45

Sea anemone

Question 46

Sea A: what surrounds the flat oral disc

Answer 46

Crown of tentacles

Question 47

Sea a: this leads into a pharynx

Answer 47

Slit-shaped mouth

Question 48

Sea a: it is divided into six pairs of primary septa

Answer 48

Gastrovascular cavity

Question 49

Sea anemone have ___ that protects them from triggering nematocyst

Answer 49

Skin mucus

Question 50

Display only the polyp body form Has large economic value

Answer 50

Corals

Question 51

Suffering from global warming and high concentrations of carbon dioxide

Answer 51

Coral reefs

Question 52

What remains when coral dies? Produce coral reefs and can also be used to create Jewelry?

Answer 52

Hard skeleton Skeleton

Question 53

5 characteristics of ctenophora

Answer 53

Marine found in warm waters Formed from 8 rows of comblike plate in locomotion Radial and biradial symmetry Endoderm, ectoderm, mesoglea between No nematocyst, have colloblasts

Question 54

Adhesive cells that are used to capture prey

Answer 54

Colloblasts

Question 55

Class that Has tentacles that may or may not have sheaths into which they retract

Answer 55

Class tentacula

Question 56

Some have flattened tentacles for creeping

Answer 56

Class tentacula

Question 57

Body is 1.5-2 cm and has sense organ called _____ near the mouth opening

Answer 57

Class tentacula Statocyst

Question 58

8 equally spaced bands called_____ Long fused cilia called ______ - movement: wavelike beating of cilia

Answer 58

Comb rows Comb plate

Question 59

It has two tentacles (very long and extensible) , the surface of the tentacles are covered with colloblasts (glue cells)

Answer 59

Class tentacula

Question 60

Gastrovascular system of class tentacula consists of

Answer 60

Mouth, pharynx, stomach, gastrovascular canals

Question 61

Digestion of class tentacula is both _____ Undigested waste leaves the body through ____

Answer 61

Extracellular and intracellular 2 anal canals

Question 62

This both occurs through the body surface in class tentacula

Answer 62

Respiration and excretion

Question 63

Representative of class tentacula

Answer 63

Representative: Pleurobrachia