A cactus (plural: cacti) is any member of the
plant family Cactaceae, native to the Americas. They are often used as
ornamental plants, but some are also crop plants. Cacti are grown for
protection of property from wild animals, as well as many other uses.
Cacti are part of the plant order
Caryophyllales, which also include members like beets, gypsophila, spinach,
amaranth, tumbleweeds, carnations, rhubarb, buckwheat, plumbago, bougainvillea,
chickweed and knotgrass.
Cacti are unusual and distinctive plants, which
are adapted to extremely arid and hot environments, showing a wide range of
anatomical and physiological features which conserve water. Their stems have
adapted to become photosynthetic and succulent, while the leaves have become
the spines for which cacti are well known.
Cacti come in a wide range of shapes and sizes.
The tallest is Pachycereus pringlei, with a maximum recorded height of 19.2 m,
and the smallest is Blossfeldia liliputiana, only about 1 cm in diameter at
maturity. Cactus flowers are large, and like the spines and branches arise from
areoles. Many cactus species are night blooming, as they are pollinated by
nocturnal insects or small animals, principally moths and bats. Cacti range in
size from small and globular to tall and columnar.
1. Where can we find cacti mostly?
A. In the jungle.
B. On the beach.
C. On the mountain.
D. In the arid and hot region.
A. In the jungle.
B. On the beach.
C. On the mountain.
D. In the arid and hot region.
2. Why do cacti mostly bloom at
night?
A. Because their flowers are large.
B. Since cacti are unusual and distinctive plants.
C. Since cacti are pollinated by nocturnal insects.
D. As the afternoon period is used for photosynthetic process.
A. Because their flowers are large.
B. Since cacti are unusual and distinctive plants.
C. Since cacti are pollinated by nocturnal insects.
D. As the afternoon period is used for photosynthetic process.
3. What does the first paragraph
tell us about?
A. The members of cacti.
B. The habitat of cacti.
C. The use of cacti
D. Types of cacti.
A. The members of cacti.
B. The habitat of cacti.
C. The use of cacti
D. Types of cacti.
4. What is the purpose of the text
?
A. To give information about American cacti
B. To explain physical feature of cacti
C. To describe cacti in general
D. To tell cacti's life
A. To give information about American cacti
B. To explain physical feature of cacti
C. To describe cacti in general
D. To tell cacti's life
5. “Cacti are unusual and
distinctive plants, which …”
The synonym of the word “distinctive” is …
A. typical
B. antique
C. unique
D. different
The synonym of the word “distinctive” is …
A. typical
B. antique
C. unique
D. different
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