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BIOLOGY XII > Animal Kingdom > Flashcards

Animal Kingdom Flashcards

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1
Q

Porifera(Habitat)

A

usually marine but few found in freshwater

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2
Q

Porifera(Symmetry)

A

Asymmetrical

Exception:- sycon and Leucosolenia have radial symm

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3
Q

What is the level of organisation in Poriferans?

A

Cellular level

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4
Q

Porifera(reproduction)

A

Sexual+Asexual

They are hermaphrodites

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5
Q

Porifera(Fertilization)

A

Internal and cross(Protogynous condn.)

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6
Q

What method of Asexual reproduction do poriferans exhibit?

A

Budding:-Exogenous(favourable condn.)
Endogenous(Gemmules containing
Archaeocytes in adverse condn.)

Fragmentation

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7
Q

Porifera(Larva)

A

Parenchymula larva-Leucosolenia
&
Amphiblastula larva-Sycon

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8
Q

Freshwater sponge

A

spongilla(porifera)

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9
Q

Bath sponge

A

Euspongia(porifera)

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10
Q

Venus flower basket,bridal gift in Japan

A

Euplectella(porifera)

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11
Q

smallest sponge

A

Leucsolenia(porifera)

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12
Q

Boring sponge (harmful to pearl industry)

A

Cliona

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13
Q

Cnidaria(habitat)

A

mostly marine , few freshwater(hydra)

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14
Q

Cnidaria(symmetry)

A

radially symmetrical

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15
Q

what is the level of organisation in Cnidaria?

A

Tissue level of organisation

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16
Q

what are the no. of germ layers in Cnidaria?

A

Diploblastic

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17
Q

Cnidaria(Digestion)

A

incomplete digestion(blind sac type)

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18
Q

Example of polyp forms cnidarians

A

Hydra , adamsia

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19
Q

Example of medusa form in cnidarians

A

Aurelia(jelly fish)

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20
Q

What is metagenesis in coelenterates?

A

Coelenterates existing in both forms exhibit alternation of generation
i.e.polyp forms the medusa asexually and medusa produces the polyp sexually

eg.Obelia and Physalia

21
Q

Nervous sys contains _______ neurons

A

Apolar

22
Q

Cnidaria(Larva)

A

Larva of Obelia-Planula

Larva of Aurelia-Ephyra

23
Q

Portugese man of war

A

Physalia (coelenterata)

24
Q

Sea-anemone

A

Adamsia (coelenterata)

25
Q

Sea fan

A

Gorgonia (coelenterata)

26
Q

Brain coral

A

Meandrina (coelenterata)

27
Q

Sea pen / Sea feather

A

Pennatula (coelenterata)

28
Q

Ctenophora fertilization is internal/external?

A

external and indirect

29
Q

Does cternophora reproduce asexually?

A

NO

30
Q

Excretion and osmoregulation in platyhelminthes is carried out by

A

flame cells

31
Q

well developed muscular pharynx is observed in

A

Aschelminthes

32
Q

Hookworm other name

A

Ancylostoma(Aschelminthes)

33
Q

Excretion and osmoregulation in Annelids is carried out by

A

Nephridia

34
Q

Nereis is dioecious or monoecious?

A

Dioecious

35
Q

Second largest animal phylum

A

Mollusca

36
Q

mouth on the ventral side and anus on the dorsal side is +nt in which phylum?

A

Echinodermata

37
Q

excretory system is absent in which phylum?

A

Echinodermata

38
Q

structure in hemichordata similar to notochord

A

stomochord +nt in collar region

39
Q

circulatory system of hemichordates is

A

open type

40
Q

hemichordates respire through

A

gills

41
Q

Excretory organ of hemichordates

A

proboscis gland

42
Q

protochordates are exclusively__(habitat)

A

marine

43
Q

teeth are modified placoid scales that are backwardly directed in

A

Chondrichthyes

44
Q

Does Chondrichthyes have air bladder

A

No

due to absence of air bladder they have to swim constantly to avoid sinking

45
Q

Number of chambers in heart of Chondrichthyes

A

2
one auricle
one ventricle

46
Q

6-15 pairs of gill slits for respiration are +nt in

A

cyclostomata

47
Q

In males pelvic fin bears claspers in

A

Chondrichthyes

48
Q

Chondrichthyes is ____operculum and Osteichthyes is ________operculum

A

Chondrichthyes is _without___operculum and Osteichthyes is ____with____operculum

49
Q

ctenoid scales +nt in

A

Osteichthyes

BIOLOGY XII (18 decks)

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