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Lab Zoología > Porifera > Flashcards

Porifera Flashcards

1
Q

What is the phylum of porifers?

A

Porifera

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2
Q

Are porifers multicellular or unicellular?

A

Multicellular

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3
Q

Do porifers have tissues and organs?

A

No, they lack tissues and organs

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4
Q

What is the main body structure of porifers?

A

Porous body with numerous pores

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5
Q

What is the function of the pores in porifers?

A

To allow water to flow through and filter food particles

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6
Q

What is the name of the specialized cells in porifers responsible for filtering food particles?

A

Choanocytes

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7
Q

What is the skeleton of porifers made of?

A

Calcium carbonate or silica

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8
Q

How do porifers reproduce asexually?

A

Through budding or fragmentation

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9
Q

Do porifers have a nervous system?

A

No, they lack a nervous system

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10
Q

What is the name of the larvae stage in porifers?

A

Parenchymula

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11
Q

Do porifers have a digestive system?

A

No, they lack a true digestive system

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12
Q

What is the common name for porifers?

A

Sponges

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13
Q

What is the primary habitat of porifers?

A

Marine environments

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14
Q

What is the process by which porifers filter food particles from water called?

A

Filter feeding

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15
Q

What is the function of spicules in porifers?

A

Provide structural support and deter predators

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16
Q

What is the body symmetry of porifers?

A

Asymmetrical

17
Q

Do porifers have a circulatory system?

A

No, they lack a circulatory system

18
Q

What is the name of the outer layer of cells in porifers?

A

Pinacoderm

19
Q

What is the process by which porifers expel waste called?

A

Exocytosis

20
Q

What is the function of amoebocytes in porifers?

A

Transport nutrients and produce skeletal elements

21
Q

Are porifers sessile or motile?

A

Sessile

22
Q

What is the scientific name for the opening in porifers through which water exits?

A

Osculum

23
Q

Do porifers have a respiratory system?

A

No, they lack a respiratory system

24
Q

What is the process by which porifers maintain osmotic balance with the environment called?

A

Osmoregulation

25
Q

What is the name of the phagocytic cells in porifers responsible for digestion?

A

Archaeocytes

26
Q

Coanocitos

A

células con un flagelo que generan corrientes de agua y atrapan partículas de alimento

27
Q

Pinacocitos

A

forman una capa externa que cubre el cuerpo de la esponja.

28
Q

Amebocitos

A

transportan nutrientes y participan en la digestión

29
Q

Porocitos

A

células tubulares que forman los poros (ósculos) por donde entra el agua.

30
Q

Ciclo de vida de esponja

A

fase larval móvil (anfiblastula o parenquímula) que se desplaza por el agua antes de asentarse en un lugar y desarrollarse en una esponja adulta sésil.

31
Q

Alimentación de esponjas

A

Las esponjas son filtradoras. El agua, que contiene partículas de alimento como plancton y materia orgánica, entra por los poros (óstios), pasa por el atrio o espongocele, donde los coanocitos atrapan las partículas, y sale por el ósculo.

32
Q

Asconoide

A

la organización más simple, con una cavidad central (espongocele) grande y poros simples.

33
Q

Siconoide

A

tienen un cuerpo más complejo, con pliegues en la pared corporal para aumentar la superficie de filtración.

34
Q

Leuconoide

A

el tipo más complejo, con un sistema de cámaras de filtración interconectadas y un mayor número de ósculos.

35
Q

Clases de poríferas

A

Calcárea, Hexactinélidas y Demospongiea

36
Q

es la clase más diversa, tienen espículas de sílice o espongina, o ambas.

A

Demospongiae

37
Q

tienen espículas de sílice y presentan forma de vidrio.

A

Hexactinellida

38
Q

es la clase más diversa, tienen espículas de sílice o espongina, o ambas.

A

Demospongiae

Lab Zoología (3 decks)

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