LSUE BIOLOGY 1001 FINAL ACTUAL EXAM 100

LSUE BIOLOGY 1001 FINAL (ACTUAL / ) EXAM 100

QUESTIONS AND 100% CORRECT DETAILED ANSWERS

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Which of the following structures is the first to emerge from the germinating seed of a edict such as the garden bean?

• the embryonic shoot hook
• cotyledons
• the embryonic root
• the shoot sheath - --Answers---C) the embryonic root

Which of the following is a disadvantage of cloning as a propagation technique?

• Cloning produces monocultures that can potentially be

wiped out by a single disease

• Cloning is more expensive and more difficult than growing

from seeds

• Cloning is time consuming, with slow results
• Cloned organisms are dangerous and unpredictable - --

Answers---A) Cloning produces monocultures that can potentially be wiped out by a single disease

Which of the following cells provide flexible support to the growing parts of plants?

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• collenchyma cells
• sieve tube elements
• sclerenchyma cells
• parenchyma cells - --Answers---A) collenchyma cells

Which of the following is a function of fruits?

• Production of food for the developing embryo
• Pollen dispersal
• Seed dispersal
• Attracting pollinators - --Answers---C) Seed dispersal

A mature ovary, specialized as a vessel that houses a protects seeds, is a

• cotyledon
• seed coat
• ovule
• fruit
• seed - --Answers---D) fruit

Which of the following substances, by providing strength, allows sclerenchyma cells to provide support and play a role analogous to that of an animals skeleton?

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• lignin
• sucrose
• starch
• chlorophyll - --Answers---A) lignin

Bark consists of

• functioning xylem, secondary phloem, cork cambium, and

cork

• secondary phloem, cork cambium, and cork
• cork only
• secondary xylem and cork
• cork cambium and cork - --Answers---B) secondary

phloem, cork cambium, and cork

How does the sperm of an angiosperm reach the egg?

• by actively swimming down through the style to the egg
• via the pollen tube that grows from the ovule to reach the

pollen grain on the stigma

• via the pollen tube that grows from the pollen grain through

the carpel tissues to the ovule

• via pollination
• usually via an insect, which places sperm in the ovary while

proving for nectar - --Answers---C) via the pollen tube that 3 / 4

grows from the pollen grain through the carpel tissues to the ovule

What happens to the cotyledons of pea and maize seeds?

• They remain in the soil and decompose
• They form a protective sheath around the developing root

system

• They surround the base of the shoot to provide additional

strength

• They immediately begin to use the sun's energy in

photosynthesis - --Answers---A) They remain in the soil and decompose

In general, plant dermal tissues are found

• lining the vascular tissue
• lining of the vascular cambium
• throughout the plant body
• at the outer surface of a plant
• near the venter of the plant stems and roots - --Answers--

-D) at the outer surface of a plant

Photosynthesis occurs in which type of plant tissue?

• parenchyma
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