la racine Flashcards

1
Q

quelle stele a la racine

A

actinostele

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2
Q

deux systèmes racinaires

A

racine pivot et racine fibreuse

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3
Q

la racine sert a quoi

A
  • ancrage
  • reserve
  • absorption
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4
Q

meristeme apical

A

centre quiescent : d’ou dérivent le protoderme, zone corticale, procambium

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5
Q

Pericycle sert a quoi ?

A

il initie les racines latérales appellees racines du premier ordre

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6
Q

Les différentes zones de croissance de la racine ?

A
  • zone de division
  • zone d’élongation
  • zone de différenciation
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7
Q

Comment circule l’eau dans les tissus ?

A

par voie apoplaste ou symplaste

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8
Q

Développement de l’endoderme

A

Bande de Caspari
Suberin
Cellulose

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9
Q

Stele des monocotyledons

A

Stele polyarche

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10
Q

Les deux type de mycorhizes

A

Ectomycorhizes

Endomycorhizes

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