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MIDTERMS > Protozoa > Flashcards

Protozoa Flashcards

1
Q

Protozoa is derived from two words _______ and ___

A

Protos and zoon

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2
Q

_______ are unicellular organisms

A

Protozoa

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3
Q

Protozoa is the ______ form of animal life

A

Lowest

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4
Q

Protozoa contain how many phyla?

A

3

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5
Q

Name the 3 Phyla of protozoa

A

Phylum Sarcomastigophora, Phylum Ciliophora and Phylum Apicomplexa

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6
Q

2 subphylum of Phylum Sarcomastigophora

A

Subphylum Sarcodina and Subphylum Mastigophora

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7
Q

It is also called Phylum Microspora

A

Phylum Apicomplexa

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8
Q

Motile from, Vegetative stage, Reproductive powers, feeding stage, cannot survive long outside the host

A

Trophozoite

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9
Q

The resting stage, nonmotile stage, has thick protective wall, Infective stage

A

Cyst

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10
Q

conversion of trophozoites to cysts

A

Encystation

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11
Q

Encystation occurs in the ______ part of the intestine when the environment becomes unacceptable for continued trophozoite multiplication

A

Distal

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12
Q

Conditions that may trigger encystation:

A

Amoeba overpopulation, pH change, Food supply, and Available oxygen

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13
Q

Excystaion is the morphologic conversion from the _____ form to the ______ form

A

cyst to trophozoite

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14
Q

Replication occurs in ________ stage

A

Tropozoite

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15
Q

Excystation is accomplished by multiplication of the nucleus via ______________

A

Binary Fission

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16
Q

2 Types of reproduction

A

Asexual and sexual

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17
Q

2 types of fission under asexual

A

Binary and Multiple

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18
Q

divides into two of more or less equal parts

A

Binary Fission

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19
Q

It is the Protozoan’s most common way of reproduction

A

Binary Fission

20
Q

Plane of Division

A

AR,FL,CT

21
Q

Sequence of Division

A

O>N>C

22
Q

In multiple fission, the nucleus and other essential organelles divide repeatedly followed by _____ (cytoplasmic division)

A

Cytokinesis

23
Q

Large number of daughter cells are produced almost simultaneously

A

Multiple fission

24
Q

Multiple fission is the way of reproduction for _______________

A

Apicomplexa (Plasmodium)

25
Q

What ruptures and liberates daughter cells when the multiplication is completed in schizogony?

A

Schizont/Meronts

26
Q

Daughter cells in Schizogony are called?

A

Merozoites

27
Q

Liberated daughter cells (merozoites) initiates another phase of:

A

Merogony and Gametogony

28
Q

More asexual reproducing merozoites

A

Merigony

29
Q

Gamete formation

A

Gametogony

30
Q

Schizogony, Endopolyogeny and Sporogony are under?

A

Multiple fission

31
Q

It is sometimes considered a form of internal budding

A

Endopolyogeny

32
Q

Endopolyogeny and Schizigony differ only in the __________________ relative to the mother cell

A

Location of daughter cells

33
Q

In Endopolyogeny, Daughter cells form in the _____________ rather than at the periphery

A

Center of the mother cell

34
Q

Endodyogeny

A

Endopolyogeny

35
Q

Meiosis immediately after the union of gametes

A

Sporogony

36
Q

Products of sporogony

A

Sporozoites in resistant oocysts

37
Q

Syngamy and Conjugation are under

A

Sexual

38
Q

Syngamy involves the union of

A

Union of entire cells (e.g., gametes)

39
Q

Sexually differentiated cells are called?

A

Gametes

40
Q

Gametes unite permanently and ____________ of nuclear material takes place

A

Complete fission

41
Q

Resulting product of syngamy

A

Zygote

42
Q

What produces (Female) Macrogametes and (Male) Microgametes

A

Gametocyets or Gamonts

43
Q

Gametocytes or gamonts are formed by

A

Gametogony

44
Q

Ciliates’ way of reproduction

A

Conjugation

45
Q

It is distinguishable from syngamy in that conjugation involves _________ and _____

A

Nuclear exchange and union

46
Q

Specialized sexual mechanism

A

Conjugation

MIDTERMS (2 decks)

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