M u s e u m  C r e a t e d  L e s s o n

Les plantes de l'Arctique

cmn Add to My Content  Add this lesson to My Content  
Canadian Museum of Nature, Ottawa, Ontario

En savoir plus sur les plantes de l'Arctique
Dans le cadre de cette leçon, les élèves se familiariseront avec les plantes arctiques. Cette démarche permettra aux élèves de mieux connaître les mécanismes biologiques qui permettent aux plantes de survivre dans l’Arctique.

Cadre et materiel :

- Cette leçon doit couvrir 1 période de classe (niveau 11 et 12).
- Ordinateurs avec accès à Internet peuvent être utilisés pour explorer le site expeditionarctic.ca, qui fournit plus d'informations sur les plantes de l'Arctique.
- Un cahier pour écrire observations et réflexions.
Arctic Plant Life
Canadian Museum of Nature
© 2013, Canadian Museum of Nature. All Rights Reserved.
View the complete media file

Scorpion moss
A Scorpion moss plant.
Scorpion moss (scientifically named Scorpidium scorpioides) is a small plant that is usually found in wet soggy places like the edges and bottoms of Arctic lakes and ponds. Usually dark in colour, especially if it has been growing in a sunny location, this type of moss can grow to cover very large areas.

Canadian Museum of Nature




© 2013, Canadian Museum of Nature. All Rights Reserved.
View the complete media file

Dwarf Fireweed
A Dwarf Fireweed plant.
Dwarf Fireweed (its scientific name being Chamerion latifoliumi) is a flowering plant that grows in sandy and gravelly moist soil. Often found growing along the banks of rivers and streams, this species has the largest flowers of any flowering plant in the Canadian Arctic. It is often called “river beauty”, referring to its abundant purple-pink flowers.

Canadian Museum of Nature




© 2013, Canadian Museum of Nature. All Rights Reserved.
View the complete media file

The Arctic Poppy
An Arctic Poppy plant.
The Arctic Poppy (known scientifically as Papaver sp.) is one of the most common plants found in the Arctic region. It is one of three plants featured on the Nunavut coat of arms. Preferring areas where the vegetation cover is kept open, these yellow, four-petaled flowers grow in almost all High Arctic habitats, except for wetlands.

Canadian Museum of Nature




© 2013, Canadian Museum of Nature. All Rights Reserved.
View the complete media file

Sunburst lichen
Orange Sunburst lichen on a rock.
Lichens are not plants, but rather a mutually-beneficial partnership between two types of organisms: fungi and algae. The fungi provide a protected home for the algae, which, for their part, provide nutrients as the result of photosynthesis. Lichens are very tough and can survive in harsh conditions where many plants cannot.

Canadian Museum of Nature




© 2013, Canadian Museum of Nature. All Rights Reserved.
View the complete media file

Alpine bistort
An Alpine bistort plant.
Alpine bistort (scientifically named Bistorta vivipara) is a flowering plant that grows on dry rocks, in well-drained gravel and in sand. It flourishes along shorelines and on tundra, slopes and cliffs. It has a long stalk that extends upward toward its red bulbils (small bulbs) and small white or pink flowers.

Canadian Museum of Nature




© 2013, Canadian Museum of Nature. All Rights Reserved.
View the complete media file

Cotton grass
A Cotton grass plant.
Cotton grass (known to scientists as Eriophorum sp.) can be found growing in damp meadows and often near the edges of ponds. Its name comes from the white puffs of cotton found at the top of the plant’s stalk, 10 to 30 cm above the ground.

Canadian Museum of Nature




© 2013, Canadian Museum of Nature. All Rights Reserved.
View the complete media file

Tufted fen-moss
A Tufted-fen moss plant.
Tufted fen-moss (scientifically referred to as Paludella squarrosa) can be found growing in wet and seepy places. This species of moss has short, pointed leaves that grow in rows on a stem and that curve away and downward towards the ground, creating a pipe cleaner effect. With a strong magnifying glass, you can see that the stems are coated with dense, dark hair.

Canadian Museum of Nature




© 2013, Canadian Museum of Nature. All Rights Reserved.
View the complete media file

An Arctic Tree
Learn about an Arctic willow tree.
HabitatSeven
© 2013, Canadian Museum of Nature. All Rights Reserved.
Play the Video File

Plant Protection
Learn how an Arctic tree protects itself against weather.
HabitatSeven
© 2013, Canadian Museum of Nature. All Rights Reserved.
Play the Video File

Activité suggérée
Ils devraient réfléchir aux questions suivantes :

Questions précises :
- Quels types de plantes poussent dans l’Arctique?
- Quelles sont quelques-unes des caractéristiques des plantes arctiques?
- En quoi les plantes arctiques diffèrent-elles de celles des autres biomes?
- Comment le climat a-t-il influé sur le développement de la vie végétale dans l’Arctique?
- Comment les changements climatiques dans l’Arctique peuvent-ils se répercuter aujourd’hui sur la vie des plantes de l’Arctique?

Questions d’ordre général :
- Qu’est-ce que j’ai trouvé le plus intéressant?
- Qu’est-ce que j’ai trouvé le plus surprenant?
- Qu’est-ce que j’aimerais approfondir davantage?

Organisez une discussion de classe sur des questions de réflexion.

Learning Objectives

Les étudiants seront :

- Connaissance générale de la façon dont les plantes survivent dans des environnements sévère.

- Se familiariser avec le vocabulaire lié à la botanique.

- Explorer les types de plantes qui poussent dans la région arctique.

- Développer des connaissances générales sur les plantes et les lichens de l’Arctique.