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Worksheets5.3 Plant Diversity
Total questions: 23
Worksheet time: 12mins
Name
Class
Date
1.
Humus includes all of the following EXCEPT
a)
dead organisms.
b)
leaf litter.
c)
weathered rock.
d)
decomposing organic matter.
2.
Which of the following was a challenge faced by early land plants?
a)
Structural support
b)
Capturing sunlight
c)
Dispersal of reproductive cells
d)
Transport of nutrients
e)
all of the above
3.
Which group of plants is still dependent on water and only found in areas with lots of moisture?
a)
Bryophytes
b)
Vascular plants
c)
Seed plants
d)
Angiosperms
4.
What do poisonous secondary metabolites like alkaloids serve to do in plants?
a)
Deter predators
b)
Aid in pollination
c)
Assist in dispersing pollen grains
d)
Increase water uptake
5.
What is the function of the palisade mesophyll in leaves?
a)
Provide structural support
b)
Conduct water and minerals
c)
Exchange gases
d)
Synthesize sugars via photosynthesis
6.
What structure attaches some leaves to the plant stem?
a)
Midrib
b)
Palisade mesophyll
c)
Petiole
d)
Stipules
7.
What is the role of collenchyma cells in plant tissue?
a)
Provide support
b)
Conduct water and minerals
c)
Synthesize sugars
d)
Exchange gases
8.
What hormone promotes cell division and prevents senescence?
a)
Ethylene
b)
Gibberellins
c)
Cytokinins
d)
Abscisic Acid
9.
What is the upper layer of photosynthetic cells in leaves called?
a)
Epidermis
b)
Palisade mesophyll
c)
Spongy mesophyll
d)
Parenchyma
10.
What type of cell has the potential to become other cell types and contains organelles?
a)
Parenchyma
b)
Collenchyma
c)
Sclerenchyma
d)
Xylem
11.
Nitrogen-fixing bacteria convert ____ to ____.
a)
gaseous nitrogen; ammonia
b)
ammonia; gaseous nitrogen
c)
gaseous nitrogen; nitrates
d)
gaseous nitrogen; nitrites
12.
Which property of water states that hydrogen bonding allows water molecules to maintain a continuous fluid column as water is pulled from roots to leaves via transpiration?
a)
pressure flow
b)
evaporation-condensation
c)
cohesion-adhesion
d)
osmotic pressure
13.
Which of the following factors influence the opening and closing of the stomata?
a)
rate of photosynthesis
b)
water availability
c)
concentration of carbon dioxide in the leaf
d)
light intensity
e)
all of these
14.
All of the following statements are true concerning phloem tissue EXCEPT that
a)
it transports plant-manufactured products.
b)
it stores organic compounds.
c)
it is composed of living cells.
d)
it does not transport minerals.
15.
Sieve tubes of phloem are different from vessel members of xylem because they
a)
are rich in lignin.
b)
have one-way flow.
c)
are alive at maturity.
d)
conduct minerals.
16.
The generally accepted explanation for the movement of organic compounds in phloem is
a)
the cohesion-tension theory.
b)
the pressure flow theory.
c)
active transport.
d)
the transpiration-pull theory.
17.
Which of the following is considered to be most closely related to land plants?
a)
red algae
b)
Fungi
c)
charophytes
d)
trypanosomes
18.
Which of the following plants belongs in the phyla angiosperm?
a)
moss
b)
fern
c)
conifer
d)
monocot
19.
Which of the following plants belongs in the phyla bryophyte?
a)
moss
b)
fern
c)
conifer
d)
monocot
20.
Which of the following statements concerning production of bryophyte reproductive cells is true?
a)
Spores and gametes are produced by meiosis.
b)
Spores and gametes are produced by mitosis.
c)
Spores are produced by meiosis, whereas gametes are produced by mitosis.
d)
Spores are produced by mitosis, whereas gametes are produced by meiosis.
21.
What occurs within the female cone of a pine tree?
a)
meiosis
b)
mitosis
c)
fertilization
d)
all of these
22.
The rapid expansion of angiosperms late in the Mesozoic era appears to be related to their coevolution with
a)
dinosaurs.
b)
gymnosperms.
c)
insects.
d)
fungi.
23.
Which of the following parts of angiosperms is not a food source?
a)
roots.
b)
fruits.
c)
shoots.
d)
nectar.
e)
all of these are food sources.
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