Cacti & Succulents

Question 1

Saguaro fruit can be processed into syrup and wine.

True or False

Answer 1

True

Question 2

Check the correct statement(s) regarding CAM.

Part of the decomposition process

A water efficient variant of photosynthesis

Crassulacean acid metabolism

Answer 2

__ Part of the decomposition process

X A water efficient variant of photosynthesis

X Crassulacean acid metabolism

Question 3

Barrel Cactus are a good source of water if lost in the desert.

True or False

Answer 3

False

Question 4

Cataceae is the largest family represented in the Tucson Mountains.

True or False

Answer 4

False

(grasses and composits [asters] are families with more)

Question 5

Spines on a cactus:

Answer 5

… shade the epidermal layers.

Question 6

Choose the correct statement.

Carnegiea Gigantea (largest)

Carnegiea gigantea (largest)

Carnegiea Gigantea (second largest)

Carnegiea gigantea (second largest)

(formating for genus and specific ephithet)

Answer 6

The saguaro, Carnegiea gigantea is the second largest species of cactus in the Sonoran Desert.

(upper case genus, lower case specific ephithet)

Saguaro is the second largest cactus – cardon is the largest.

Question 7

All cacti are succulents, but not all succulents are cacti.

True or False

Answer 7

True

Question 8

Saguaros are rarely found growing in the bottom of Avra Valley because:

Answer 8

… seedlings are killed by cold air settling there in the winter.

Question 9

Check the true statement(s) about succulents.

Nearly all succulents have extensive, shallow root systems.

Succulent Plants store water in fleshy leaves, stems or roots.

Stems and leaves of most species have waxy cuticles.

Most succulent plants are spiny, bitter or toxic.

Answer 9

X Nearly all succulents have extensive, shallow root systems.

X Succulent Plants store water in fleshy leaves, stems or roots.

X Stems and leaves of most species have waxy cuticles.

X Most succulent plants are spiny, bitter or toxic.

Question 10

The saguaro Cactus is the only columnar cactus in the United States.

True or False

Answer 10

False

Question 11

A large saguaro can weigh as much as 80 pounds per foot.

True or False

Answer 11

True

Question 12

Ocotillo, agave and euphorbia are all related to cacti.

True or False

Answer 12

False

Question 13

Check the key characteristics of plants in the family Cactaceae.

Many stamens

Multi-lobed stigma

Spines instead of leaves

Sepals grading into petals (tepals)

Colorful sepals

Answer 13

X Many stamens

X Multi-lobed stigma

__ Spines instead of leaves

X Sepals grading into petals (tepals)

__ Colorful sepals