Unit 5 Part 1

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Dioecious

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Voacbulary words on the phylum porifera and cnidarian

Biology

12th

27 Terms

1

Dioecious

has only one sex per individual; they either produce sperm or eggs

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2

Monoecious

(sponges) both sexes occur in the same individual

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3

Pinacocytes

the outside covering; cells that line the outser surface of the porifera

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4

Porocytes

where water enters the sponge; these cells regulate water circulation

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5

Mesohyl

jellylike layer of cells under pinacocytes

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6

Mesenchyme cells

(amoeboid cells) they function for reproduction, transportation, and storing food

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7

Choanocytes

cells that line the inner chamber and has flagellum (tail) to wave water around, creates water currents, and filters out food particles

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8

spicules

needle like spikes

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9

spongin

fibrous material made of collagen

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10

ascon

vase like body form of sponges

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11

sycon

body form where walls appear folded in

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12

leucon

body form with an extensively branched canal system

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13

gemmules (sponge)

resistant capsules containing amoeboid cells

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14

epidermis

outer layer of the body wall

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15

gastrodermis

inner layer of the body wall

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16

mesoglea

the jelly like material between the epidermis and the gastrodermis

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17

cnidocytes

stinging cells that are made of either epidermal of gastrodermal cells; they produce cnida

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18

cnida

fluid filled capsules containing hollowed tube that has toxins in it

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19

nematocysts

a type of cnida used in food gathering and defense that delivers paralyzing toxin

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20

polyp

the body form in which cnidarians are asexual, the mouth is surrounded by tentacles, and the aboral end is attached to the substrate

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21

medusa

the free swimming body stage, shaped like an inverted bowl, and typically the reproductive phase

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22

gastrovascular cavity

the fake body cavity that aids in digestion, exchanges gases, and discharges gametes and waste

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23

planula

a free swimming larvae that is formed from the blastula in the life cycle

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24

gastrozoid

polyps that are in charge of feeding

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25

gonozoid

polyps that are in charge of reproduction

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26

comb rows

rows of cillia that comb jellies use for movement

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27

colloblasts

cells that are used to capture prey

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