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BPSC EXAM 2 QUESTIONS AND ANSWERS
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BPSC EXAM 2 QUESTIONS AND ANSWERS
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BPSC EXAM 2 QUESTIONS AND ANSWERST or F: Border cells die immediately when they become detached from the root cap -
Answers -T
The Casparian Stip blocks what kind of movement across endodermal cells:
symplastic movement
apoplastic movement
transmembrane movement
all movement is blocked
both a) and b) are correct - Answers -Apoplatic
Which of the following is not a feature of lateral roots?
lateral roots develop within the 1 ̊ root tissues
lateral roots form at random
the oldest lateral roots are nearest to the shoot
lateral roots have the same structure as the parent root
All of these ARE features of lateral roots - Answers -lateral roots form at random
phytomere can be described as:
the point of leaf attachment
containing an axillary bud, internode, node, & leaf
a small mass of cells that grows into an organ
the protective covering of a leaf
both b) and c) are correct - Answers -containing an axillary bud, internode, node, & leaf
T or F: the interfasicular space is missing from the stems of some eudicots? - Answers -
T
Which of the following is NOT an example of a modified stem:
corms
tendrils
Spines
thorns
all of these are modified stems - Answers -Spines
Double fertilization describes the process whereby:
twin embryos are formed
pollen from 2 species is present and hybrid embryos are formed
one sperm nucleus fertilizes each the egg and central cell to form the embryo and
endosperm
the plant is considered dioecious ("two houses") - Answers -one sperm nucleus fertilizes
each the egg and central cell to form the embryo and endosperm
Cinnamon is produced from what part of the plant?
The seeds of the cinnamon plant
,Any shoot tissue of the cinnamon plant
The inner bark of the cinnamon plant
The leaves of the cinnamon plant
The roots of the cinnamon plant - Answers -The inner bark of the cinnamon plant
Describe the sequence of events that culminates in leaf abscission. - Answers -
Enzymes break down calls at the separation layer after reusable molecules return to the
stem.
Describe three examples of leaf modifications and three examples of stem modifications
in angiosperms. - Answers -Leaf: tendrils, spines, and trichomes
Stem: tendrils, thorns, cladophylls
Consider the tunica-corpus organization of the shoot apical meristem. Discuss the
orientation of cell divisions in each and how that orientation is important to meristem
function. - Answers -Tunica: outermost; division is anticlinal (sideways)
Corpus: beneath tunica; divide periclinal (thicken)
Consider the 2 main types of primary vasculature in the stem of most seed plants, other
than monocots. What is the main difference between them? - Answers -Narrow and
wide interfascicular regions: Narrow are all close together in a circle and wide are
separated but still in a circle
Name the 3 classes of simple leaves. Discuss how simple leaves are different from
compound leaves. - Answers -Entire: rounded
Palmately lobed: think of a starfish
Pinnately lobed: looks like a taproot
Compound leaves are divided into leaflets
What are two types of stem modifications? Discuss the function of each modification. -
Answers -Tendrils allow the plant to attach itself to things
Thorns keep animals from eating the plant
Organisms that undergo sporic meiosis are also referred to as having an alternation of
generations. Explain what this means. - Answers -They go through haploid and diploid
generations. Haploid generation makes gametophyte (N) and diploid generation makes
sporophyte (2N). Spores divide by mitosis to make haploids. The haploids then fuze to
make a zygote
What is a flower and what are its principal parts? - Answers -Carpel( style, stigma, and
ovary), stamen (filament and anther), petals, and sepals
Perfect: stamen and carpels
Complete: all 4 whorls
Describe the process of double fertilization in angiosperms. What are the products of
this process? - Answers -First, the egg is fertilized and then the central cell is fertilized.
, Egg fertilization produces an embryo and celtral cell fertilization produces the
endosperm.
Discuss the difference between a floral meristem and a shoot apical meristem. -
Answers -Floral meristems lose meristematic ability after the flower is complete.
What is the difference between a gametophyte and a sporophyte? Which is more
evolutionarily advanced? Explain your answer. - Answers -Gametophytes are haploid
and are more evolutionarily advanced as they are more common in angiosperms. This
is because they allow for more genetic variation
Which of the following is(are) NOT produced by the shoot apical meristem?
a. leaf primordia
b. a protective covering
c. bud primordia
d. phytomeres
e. cells of the primary plant body - Answers -Protective covering
Extensions of vascular tissues into the leaves from the stem are called:
a. leaf traces.
b. leaf trace gaps.
c. branch traces.
d. stem bundles.
e. Sympodia - Answers -leaf traces.
A plant with decussate phyllotaxy has:
a. two leaves per node in the same rank.
b. two leaves per node in two opposite ranks.
c. one leaf per node, arranged in two opposite ranks.
d. one leaf per node, arranged spirally.
e. three or more leaves per node. - Answers -two leaves per node in two opposite
ranks.
In most monocots, the base of the leaf is expanded into a ______.
a. blade.
b. stipule.
c. sheath.
d. lamina.
e. Petiole - Answers -Petiole
A leaf having a rachis is a ______ leaf.
a. simple
b. palmately compound
c. pinnately compound
d. whorled
e. Sessile - Answers -pinnately compound
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