Recitation. Biol 1720. Homework on Plants
1. Well developed vascular systems are absent in
a. Mosses
b. Liverworts
c. Hornworts
d. B and c
e. A, b, and c
e. Clustered, staled sporangia called sori
arise on the backs of the fronds
8. Which of the following is not a gymnosperm?
A. Cycads
b. Ginkgoes
c. Conifers
d. Anthophytes
e. Cypress
2. Vascular plants are characterized by
a. Possession of specialized conducting
systems
b. Possession of a cuticle
c. Possession of stomata
d. Dominance of the gametophyte in the life
cycle
e. A, b, and c only
9. Angiosperms are primarily characterized by all of
the following except
a. Ovules are enclosed within other tissues
at the time of pollination
b. A seed develops within a carpel
c. The ovary matures into the fruit
d. Free water is required for pollination
e. Bear flowers, which are modified stems
bearing modified leaves
3. Most adult vascular plants represent the
a. Epiphyte generation
b. Sporophyte generation
c. Spore generation
d. Gametophyte generation
e. Angiosperm generation
10. The process unique to angiosperms is called
a. Syngamy
b. Embryogenesis
c. Double fertilization
d. Zygote formation
e. Self fertilization
4. Plants as well as brown, green and red algae show
a basic life cycle which involves the alternation of
generation between a (n)
a. Spore and a pollen
b. Megaspore and a microspore
c. Seed and a cone
d. Sporophyte and a gametophyte
e. Egg and a sperm
11. Which of the following is not one of the four
basic types of tissues found in plants?
A. The vascular tissue system
b. The ground tissue system
c. The dermal system
d. Flowers, fruits and seeds
e. Meristems
5. The gametophyte is green and nutritionally
independent in
a. Mosses, liverworts, ferns
b. Angiosperms
c. Gymnosperms
d. Conifers
e. All of the above
6. Seeds occur only in
a. Heterosporous vascular plants
b. Mosses
c. Green algae
d. Liverworts
e. Hornworts
7. Which of the following is not true about ferns?
A. Their gametophytes and sporophytes are
both photosynthetic
b. Their sporophytes are much smaller than
the gametophytes
c. Their underground stem is called a
rhizome
d. Their leaves are called fronds
12. Which of the following is not a characteristic of
monocots?
A. Leaves usually contain parallel veins
b. Groups of vascular tissues scattered
throughout the stem
c. Groups of vascular tissues in a ring
d. Flower parts mostly in threes or multiples
of three
e. Seeds with one cotyledon
13. Primary growth in plants results from activity of
a. Apical meristems
b. Lateral meristems
c. Vascular cambium
d. Cork cambium
e. Tracheids
14. Sclerenchyma is characterized by all of the
following, except
a. Cells have thick, tough secondary walls
b. They may lack living protoplasts when
they mature
c. Cells can always divide
d. Their secondary walls may often be
impregnated with lignin
e. Contain two types of cells, fibers, and
sclereids.
15. Epidermis is
a. A thick layer of cuticle-coated flattened
epidermal cells
b. A plant covering with trichomes, guard
cells, and root hairs
c. Produced by the protoderm
d. Interspersed in the leaves by stomatal
openings
e. All of the above
16. All the tissues interior to the endodermis are
collectively called as the
a. Pericycle
b. Casparian strip
c. Stele
d. Pith
e. Cambium
17. Annual rings in a tree trunk result from
differences in
a. Deposition of colored materials in the
oldest cells
b. The growth rate of secondary xylem at
different seasons
c. The amounts of heartwood and sapwood
d. The kinds of cells, xylem or phloem,
produced by the cambium
e. The proportion of wood cells and cork
cells in the xylem
18. Photosynthesis can occur only if the stomata
were open to allow the entry of
a. O2
b. CO2
c. Water
d. Carbohydrates
e. All of the above
19. The gynoecium is a collective term for the
a. Pistils
b. Ovules
c. Petals
d. Sepals
e. Stamens
20. The swollen lower portion of the carpels contains
a. Androecium
b. Ovules
c. Petals
d. Sepals
e. Stamens
21. A staminate flowers is one that has stamens but
no
a. Anthers
b. Carpels
c. Petals
d. Pollen
e. Sepals
22. If a certain plant species has staminate and
pistillate flowers on separate individuals, they are
said to be
a. Androecious
b. Gynoeciuos
c. Monoecious
d. Dioecious
e. Self-pollinating
23. Plants species in which functional stamen and
carpels are both present and they reach maturity at
different times are said to be
a. Androecius
b. Dioecius
c. Dichogamous
d. Monoecious
e. Gynoecious