Zoology Lab Practicum #1 Flashcards

1
Q

if the light rays from an object enter the eye at a small angle, than the object will cover a __________ portion of the back of the eye.

A

smaller

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2
Q

the closer you move an object to your eye, the _________ the angle of light from the object entering your eye. Therefore, the object appears to be ___________ .

A

larger, larger

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3
Q

the magnifying lens ________ the angle of light coming from the object viewed. This results in _____________ spread of the image at the back of the eye.

A

increases, increased

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4
Q

which objective lens gives the greatest magnification?

A

40x

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5
Q

which objective lens gives the greatest field of view?

A

4x

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6
Q

what are choanoflagellates

A

linked to sponges because of their cell type called the choanocyte.

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7
Q

How does the paramecium move

A

the cilia

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8
Q

what magnification has the largest depth of focus?

A

4x

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9
Q

what three characteristics define kingdom Animallia?

A

eukaryotic, multicellular, and heterotrophic

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10
Q

function of pseudopodia

A

locomotion, allowing it to move (amoeba)

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11
Q

what kind of reproduction do amoeba use?

A

binary fission(asexual)

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12
Q

what disease do trypanosoma cause and what insect transports it?

A

African sleeping sickness, tetse fly

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13
Q

where are trichonympha found?

A

in termites

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14
Q

what disease is caused by plasmodium?

A

malaria

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15
Q

what are the three classes in phylum Porifera?

A

Class hexactinellida, calcispongiae, and class demospongiae

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16
Q

what is class calcispongae

A

calcareous sponge

17
Q

what is class hexactenallida made of?

A

spicules of silicone oxide, is has a hollow inside meaning larger surface area.

18
Q

what is class demospongiae made of?

A

calcareous, spongin. (feels fluffier)

19
Q

what is the osculum?

A

osculum is is where water exits

20
Q

what is the ostium?

A

osmium is where water enters

21
Q

symmetry of sponges?

A

no symmetry

22
Q

why is the amount of surface area important for each water canal system?

A

affects efficiency of water flow

23
Q

what four classes are in phylum Cnidaria?

A

lass anthozoa, class Hydrozoa, class Scyphozoa, class cubazoa

24
Q

class Hydrozoa

A

gonads occur in the ectoderm tissue. include hydras

25
class anthozoa
sea anemones, coral
26
class Scyphozoa
produces series of budding medusa from a single polyp as part of their reproductive cycle. includes jellyfish.
27
class cubozoa
cube shape to medusa stage, box jellyfish
28
what type of symmetry does phylum cnidaria have?
radial
29
how are phyla cnidaria and ctenophore different in terms of digestive tracts
ctenophore has a complex digestive tract while cnidaria does not.
30
what are statocysts and what are they used for?
sensory organs used for balance while swimming. aquatic invertebrates have them.
31
what type of symmetry is in phylums Platyhelminthes and Nematoda?
bilateral symmetry.
32
what characteristic are similar in Platyhelminthes?
flat bodies, bilateral, flame cells
33
what are flame cells?
cells that eliminate metabolic waste products.
34
how many layers do Platyhelminthes have?
endoderm, mesoderm, ectoderm
35