Cell Flashcards

1
Q

Atmosphere for Fungi

A

Warm and Humid and these are cosmopolitan

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2
Q

What are chitosomes?

A

These are special vesicles having wall material occur near hyphal tips

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3
Q

Food Reserves of Fungi

A

Glycogen and Mannitol

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4
Q

Unicellular Sp.

A

Yeast

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5
Q

Structure of Fungi

A

Filamentous bodies that consist of highly complex bodies of Hyphae

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6
Q

Hyphae on basis of Septate

A

Coenocytic (Aseptate)

Septate

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7
Q

Define Coenocytic Hyphae

And Examples

A

Continuous tubes filled with Multinucleate Cytoplasm

EX - Phycomycetes (Zygomycetes and Oomycetes)

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8
Q

Define Septate Hyphae

And Examples

A

Have Septae or Cross Walls between cells

EX- Ascomycetes, Basidiomycetes and Deuteriomycetes

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9
Q

Cell wall and composition of ______

A

Made of Polymer of Chitin + Polysaccharides, that is,

NAG (N-Acetyl Glucosamine)

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10
Q

Chitin shows similarity to _______ of insects

A

Exoskeleton

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11
Q

Hyphae exhibit ____ growth

A

Apical (Individual cell arrangement and division)

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12
Q

Lateral branches arise behind the apex in _______ order

A

Acropetal

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13
Q

Modes of Nutrition

A

Heterotrophic(Major Mode)
Parasitic(Cause wheat rust in Puccinia)
Symbiotic(Form Lichens and Mycorrhizae)

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14
Q

Motile Flagellated Species

A

Present in:
Oomycetes
Absent in:
Zygomycetes, Ascomycetes, Basidiomycetes and Deuteriomycetes

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15
Q

Major Phase of Fungi Life

A

Haploid (Diploid during Zygote nucleus)

Haplontic Life Cycle

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16
Q

Fungi show _____ (Cell division)

A

Zygotic Meiosis

17
Q

ICBN

A

International Code for Botanical Nomenclature

18
Q

Division and Class must end in __________

A

Mycota and mycetes

19
Q

Different Characteristics of Classes of Fungi

A
Oomycetes - Most Primative
Zygomycetes - Conjugation Fungi
Ascomycetes - Largest Class and Sac Fungi 
Basidiomycetes - Most Advanced
Deuteriomycetes - Fungi Imperfecti
20
Q

Vegetative reproduction in Fungi

A

Fragmentation (Majorly in Basidiomycetes)
Budding (Common in Saccharomyces like Yeast)
Fission (Fission Yeast)

21
Q

Asexual Reproduction in Fungi

A

Sporulation-
Zoospores
Sporangiospores
Conidia

22
Q

Define Zoospores

A

Motile, uninucleate & naked, flagellate structures
Form endogeneous sac like structure
Attached to posterior end

23
Q

Sporangiospores (aplanospores)

A

Non motile unicellular spores formed endogenously
Anemochory and Produced in large number
Hyphae bearing terminal sporangium called Sporangiophore

24
Q

Conidia

A

Non motile unicellular spores borne exogenously at the tip of the hyphae.
Hypha bearing them is called conidiophore.

25
Q

Sexual Reproduction

A
  1. Gametic copulation (common in Oomycetes)
  2. Gametangial Contact (common in Oomycetes)
  3. Gametangial Copulation (common in Zygomycetes)
  4. Spermatization (common in Ascomycetes)
  5. Somatogamy (common in Basidiomycetes) etc.
26
Q

Meiotic Spores, Germ Spores, Ascospores and Basidiospores are in

A

a) Meiotic zoospores by Oomycetes (after meiosis in 2n Oospore)
b) Germ spores in Zygomycetes (after meiosis in 2n Zygospore)
c) Ascospores in Ascomycetes (after meiosis in 2n Zygote)
d) Basidiospores in Basidiomycetes (after meiosis in 2n Zygote)

27
Q

Phycomycetes habitat

A
  • Aquatic habitats
  • On decaying wood in moist and damp places or
  • As obligate parasites on plants.
28
Q

Zygospore is formed by

A

the fusion of two gametes

29
Q

Gametes show _______ and ______ types of gamy

A

isogamy, anisogamy or oogamy