Especialidades JA/Árboles - Avanzado/Respuestas

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Árboles- Avanzado
Asociación General

Estudio de la naturaleza


Destreza: 3
Año de introducción: 1949




1

Tener la especialidad de Árboles.


Para consejos e instrucciones, véase Árboles.


2

Recolectar, identificar, prensar y montar hojas de 35 diferentes especies de árboles.

3

Recolectar por separado, prensar, montar y etiquetar especímenes que demuestran los siguientes términos:


3a

Aserrado


3b

Doble aserrado


3c

Entera


3d

Crenado


3e

Dentado


3f

Lobulada


3g

Inciso


3h

Verticiladas


3i

Opuestas


3j

Alternas


3k

Pinnatisecta compuesta


3l

Triple compuesta (si es posible)




4

Hacer lo siguiente:



4b. Of what use are the two parts of a scientific name?

The first part of the scientific name is the genus, and the second part is the species. We have already discussed Quercus alba - the white oak, so let's expand on that. There are many, many different species of oak, and they are all in the genus Quercus. All these trees produce acorns, and they are closely related to one another. Grouping them into a common genus recognizes their similarities, while separating them by species recognizes their differences.


5

Mencionar seis familias de árboles en la clase angiospermas y tres familias en la clase gimnospermas.


Angiosperms

Beech Family
Beeches, Chestnuts, Chinkapins, and Oaks
Birch Family
Alders, Birches, Hornbeams, and Hazelnuts
Cashew Family
Smoketree and Sumacs
Custard-Apple Family
Pawpaw and Pond apple
Elm Family
Elms and Hackberries
Horsechestnut Family
Buckeyes and Horsechestnuts
Laurel Family
Laurels, Redbay, and Sassafras
Legume Family
Acacias, Redbuds, and Locusts
Magnolia Family
Magnolias, and Yellow (Tulip) Poplar
Maple Family
Maples
Mulberry Family
Figs, Mulberries, and Osage Oranges
Palm Family
Coconuts, Dates, Palms, and Palmettos
Rose Family
Apples, Peaches, Pears, and Plums
Sycamore Family
Sycamores
Walnut Family
Hickories, and Walnuts
Willow Family
Aspens, Poplars, and Willows


6

Conocer y describir la función de las hojas en la vida de un árbol.


A leaf is the part of a plant specialized for photosynthesis. For this purpose, a leaf is typically flat and thin, to expose the cells containing chloroplast to light over a broad area, and to allow light to penetrate fully into the tissues. Leaves can store food and water.


7

Mencionar las familias de árboles en su área que tienen hojas opuestas.


This is a partial list of trees with opposite leaves. There may be more in your area.


8

Definir los siguientes términos:


8a

Estípula


8b

Pecíolo


8c

Brizna


8d

Pino


8e

Duramen


Examination of the cross-section of a log will reveal dark wood near the center, and light-colored wood near the bark.  The dark wood near the center is heartwood.  As a tree increases in age and diameter an inner portion of the sapwood becomes inactive and finally ceases to function, as the cells die. This inert or dead portion is called heartwood.


8f

Albura


8g

Anillo de primavera


8h

Anillo de verano


8i

Anillo anual


8j

Cámbium


8k

Xilema


8l

Floema




9

¿Qué familias de árboles tiene:


9a

espinas?


9b

amento?


9c

semillas aladas?


9d

bellotas?


9e

las vainas?


9f

cápzulas?


9g

nueces?


9h

bayas?




10

Identificar 10 árboles de hoja caduca por sus características de «invierno» (características que no sean las hojas) como ramas y el capullo, forma características y hábitos de crecimiento.


By bark

The bark of many trees is easily recognizable, and in some cases, using the bark to identify the tree is easier than using the leaves.



Referencias