WorksheetsBotany Unit 1
Total questions: 49
Worksheet time: 26mins
Name
Class
Date
1.
Which of the following are least likely to be capable of photosynthesis?
a)
spongy parenchyma
b)
palisade parenchyma
c)
epidermal cells
d)
guard cells
2.
If a plant part exhibits positive phototropism, it grows
a)
away from a chemical.
b)
toward light.
c)
away from light.
d)
toward gravity.
e)
It would depend on the plant structure since some plant parts grow toward a stimulus while others grow away from it.
3.
Opening and closing of stomata (which is incorrect)
a)
is controlled by availability of water.
b)
occurs regularly regardless of the availability of water.
c)
is controlled by guard cells.
d)
has to do with solute concentration of the cytosol.
4.
Xerophytes are plants that grow in dry desert soils. One would expect their cytosol to have
a)
more stored water than other plants.
b)
a higher solute concentration producing an osmotic gradient which will allow them to extract water more effectively from the soil.
c)
a lower solute concentration that will cause them to be able to draw essential salts in from the soil.
5.
Plants are autotrophic. This means they
a)
grow only in the best soils.
b)
grow in a great variety of soils.
c)
manufacture their own food.
d)
survive only by growing in conditions where food is available to them.
6.
Chloroplasts store
a)
only chlorophyll.
b)
chlorophyll and some accessory pigments such as carotenoids.
c)
starch.
d)
only carotenoids.
7.
Plants conduct photosynthesis in
a)
their leaves and sometimes in their stems.
b)
all tissues.
c)
their leaves and occasionally in their flowers.
d)
their leaves only.
8.
The hypocotyls is the
a)
embryonic stem.
b)
embryonic root.
c)
other name oftentimes applied to the entire plant embryo.
d)
food stored within a seed.
9.
Vascular cambium
a)
is conductive tissue in that it has the ability to transport both water and sugars.
b)
is conductive tissue that transports water only.
c)
is conductive tissue that transports sugars only.
d)
is a region of cells that actively divide and gives rise to secondary stem growth.
e)
none of these
10.
Plant cells
a)
have a cell wall but lack a plasmalemma.
b)
always have a primary cell wall.
c)
have cell walls only in cells of supportive tissues such as xylem.
d)
always have a secondary cell wall.
11.
Lenticels are found primarily on
a)
older woody stems.
b)
herbaceous stems.
c)
roots of very young woody plants.
d)
younger, photosynthetic woody stems.
12.
Which terms are opposites?
a)
diffusion – osmosis
b)
turgor – wilting
c)
high pH – acid
d)
alkaline – basic
13.
Which of the following best characterizes the arrangement of vascular tissue in herbaceous dicot stems?
a)
a continuous layer, unbroken around the stem
b)
in bundles scattered throughout the stem
c)
Actually, herbaceous dicots do not have vascular tissue. This is what distinguishes them from other plant groups.
d)
bundles arranged in a circle toward the outside of the stem
14.
The earliest leaves, oftentimes referred to as “seed leaves” are the
a)
plastids.
b)
hypocotyls.
c)
cotyledons.
d)
radicle.
15.
One would expect to find chloroplasts
a)
only in plant cells exposed to light
b)
in all plant cells
c)
only in plant cells exposed to minimal light since chlorophyll is sensitive to light
d)
only in plant cells that lack chromoplasts
16.
Which of the following is the site of the stem meristem?
a)
axillary bud
b)
bud scale
c)
terminal bud
d)
node
17.
The stem’s pith is composed largely of which kind of cells?
a)
phloem
b)
parenchyma
c)
xylem
d)
cambium
18.
Because they lack centrioles plant cells
a)
are unable to produce spindle fibers.
b)
divide but do not duplicate their chromosomes.
c)
still produce spindle fibers which originate from the two poles of the cell.
d)
undergo cell division only when young and then cease all mitotic and meiotic activity when they mature.
19.
Plasmodesmata
a)
have to do with cell division.
b)
are components of the cell wall in some plants.
c)
are cytoplasmic extensions that connect the cytosol of adjoining cells.
d)
are storage vesicles that store enzymes.
20.
The organ systems of plants are the
a)
roots, stems and leaves
b)
roots, stems, leaves and seed
c)
roots, stems, leaves, and flowers
d)
stems, leaves and flowers
21.
Vascular tissue in roots of herbaceous plants
a)
is organized exactly like the vascular tissue found in their stems.
b)
is located in bundles that are arranged symmetrically around the outer region of the root.
c)
is confined to one region in the center of the root.
d)
is arranged in a continuous layer around the root.
22.
Seeds differ from spores in that
a)
spores have stored food and seeds do not.
b)
seeds are reproductive structures which have the developing embryo whereas spores are not associated with the reproductive process.
c)
seeds are more primitive than spores.
d)
seeds have stored food while spores do not.
23.
Buds are protected by overlapping structures called
a)
bud scales
b)
coverlets
c)
nodes
d)
leaf scales
24.
The cuticle is a
a)
waxy covering on the surface of leaves that prevents water loss.
b)
layer of cells just inside the phloem that generates secondary growth.
c)
the region between adjoining cells.
d)
the outer layer of cells covering young roots.
25.
The primary cell wall
a)
is composed of cellulose and pectins that give it flexibility.
b)
is composed of cellulose and lignins that make it rigid.
c)
is found only in woody plant cells.
d)
lacks cellulose.
26.
A natural glue found within the intercellular space is
a)
cellulose.
b)
Lignin.
c)
Plasmodesmata.
d)
Pectin.
27.
Plant roots grow downward toward gravity. This is an example of the growth movement called ___.
a)
positive geotropism
b)
angiosperms
c)
spore
d)
autotrophic
e)
spindle fibers
28.
The ___ are the plant group that produce flowers.
a)
positive geotropism
b)
angiosperms
c)
spore
d)
autotrophic
e)
spindle fibers
29.
The ___ is a reproductive structure that lacks stored food and is produced without the fusion of gametes.
a)
positive geotropism
b)
angiosperms
c)
spore
d)
autotrophic
e)
spindle fibers
30.
Plants are ___ in that they are able to produce their own food.
a)
positive geotropism
b)
angiosperms
c)
spore
d)
autotrophic
e)
spindle fibers
31.
During mitosis and meiosis chromosomes are pulled to opposite poles of the dividing cell by microtubules called ___.
a)
positive geotropism
b)
angiosperms
c)
spore
d)
autotrophic
e)
spindle fibers
32.
___ is a storage tissue especially common in the pith of the stem.
a)
Parenchyma
b)
Plasmodesmata
c)
stomates
d)
Bark
e)
cellulose
33.
___ are cytoplasmic stringers that extend through cell walls of adjoining cells and interconnect their cytosol.
a)
Parenchyma
b)
Plasmodesmata
c)
stomates
d)
Bark
e)
cellulose
34.
Especially in the lower epidermis are numerous holes called ___ which allow for gas exchange between the leaf and the atmosphere.
a)
Parenchyma
b)
Plasmodesmata
c)
stomates
d)
Bark
e)
cellulose
35.
Plant cells are surrounded by a cell wall composed of ___.
a)
Parenchyma
b)
Plasmodesmata
c)
stomates
d)
Bark
e)
cellulose
36.
The ___ is the “seed leaf.”
a)
cotyledon
b)
mesophyll
c)
osmosis
d)
epidermis
e)
lenticels
37.
All tissues between the lower and upper epidermis are referred to as ___.
a)
cotyledon
b)
mesophyll
c)
osmosis
d)
epidermis
e)
lenticels
38.
___ is the diffusion of water through a semipermeable membrane.
a)
Cotyledon
b)
Mesophyll
c)
Osmosis
d)
Epidermis
e)
Lenticels
39.
Cork is produced by a layer of actively dividing cells called the ___.
a)
cotyledon
b)
mesophyll
c)
cork cambium
d)
epidermis
e)
lenticels
40.
___ are tiny, porous spots on young woody twigs that allow for gas exchange.
a)
Cotyledon
b)
Mesophyll
c)
cork cambium
d)
Epidermis
e)
Lenticels
41.
___ are storage organelles found in plant cells.
a)
Plastids
b)
Cambial
c)
Pectin
d)
Terminal
e)
Spongy
42.
___ is a component of primary cell walls that gives them some measure of flexibility.
a)
Plastids
b)
Cambial
c)
Pectin
d)
Terminal
e)
Spongy
43.
___ parenchyma cells are situated above the lower epidermis and have sizeable intercellular spaces for gas storage.
a)
Plastids
b)
Cambial
c)
Pectin
d)
Terminal
e)
Spongy
44.
The ___ zone is a region of rapidly dividing cells in woody roots that cause the root to increase in diameter.
a)
cambial
b)
plastids
c)
pectin
d)
terminal
e)
spongy
45.
The ___ bud is located at the tip of the woody stem.
a)
terminal
b)
plastids
c)
cambial
d)
pectin
e)
spongy
46.
The ___ is the embryonic stem found within the seed.
a)
hypocotyl
b)
plastids
c)
cambial
d)
pectin
e)
terminal
47.
The part of the leaf that attaches it to the branch
a)
midrib
b)
petiole
c)
leaf bud
d)
blade
48.
Label the parts of the plants.
a)
Flower
b)
Stem
c)
Leaf
d)
Roots
1
2
3
4
1)
2)
3)
4)
49.
A (n) (a) is a scientist who will likely study the structure in plants
Choose from the below words
Botanist
Ecologist
Zoologist
Enginneer
100 %
