Download BIO 274-01 Exam 1 Name Matching (10 pts) 1. Match each plant

BIO 274-01
Exam 1
Name ___________________
Matching (10 pts)
1. Match each plant part with its function:
_____ root c
_____ leaves
_____ flower
_____ stem
_____ fruit
a
d
b
e
a.
b.
c.
d.
e.
capture sunlight and absorb CO2 for photosynthesis
provides support, conducts water and nutrients
found below ground, anchors plant
sexual reproduction in angiosperms
mature ovule
----------------------------------------------------------------------------------------------------------Multiple Choice (2 pts each)
2.
a.
b.
c.
d.
Photosynthesis is
production of a seed within an ovary
creation of chemical energy from sunlight and CO2
fertilization of the egg with the sperm
none of the above
3.
a.
b.
c.
d.
Tissues
are a group of cells that form a structural and functional unit
may be either simple or complex
both a and b are true
neither a nor b are true
4.
a.
b.
c.
d.
Meristems
are found at the tips of roots and shoots
are the site in the plant body where cells divide
are the site in the plant body where cell differentiation is initiated
all of the above
5.
a.
b.
c.
d.
Reproduction is defined as
the bursting of the radicle through the seed coat
production of new organs via cell division and enlargement
the transfer of genetic information from one generation to the next
none of the above
6.
a.
b.
c.
d.
7.
All of the following are true about sexual reproduction except
it requires two parents
it requires more energy
it yields genetically distinct cells
it yields to genetically identical cells
The gametophyte
a.
b.
c.
d.
is the haploid plant body
is the diploid plant body
gives rise to haploid gametes via mitosis
both a and c
8.
a.
b.
c.
d.
Which of the following is a male floral part
stigma
anther
style
ovary
9.
a.
b.
c.
d.
Gibberellic Acid is a plant hormone that
inhibits plant growth
kills plants
accelerates plant growth
none of the above
10. Every ovule contains
a. two sperm cells
b. one sperm cell
c. an egg
d. pollen grains
11. Pollination can be defined as
a. the fertilization of the egg by the sperm
b. the ability to develop into a new plant without first mating with another organism
c. the division of a parent cell to yield a genetically identical daughter cell
d. the transfer of pollen from an anther of one plant to the pistil of another
----------------------------------------------------------------------------------------------------------Definitions (2 pts each)
12. Define the following terms:
a. meristem
site of cell division and where differentiation is initiated
b. haploid
one set of chromosomes
c. diploid
two sets of chromosomes
d. spore
one celled reproductive unit that can develop into a new plant without mating with
another organism
e. germination
bursting of the radicle through the seed coat
----------------------------------------------------------------------------------------------------------Complete the following statements
13. The embryo is composed of three parts: the epicotyl contributes to shoot
development, the hypocotyl contributes to stem development and the radicle contributes
to root development. (4 pts).
14. During embryogenesis the terminal cell develops into the embryo and the basal cell
develops into the suspensor. (4 pts)
15. The first step in seed germination is imbibition. (2 pts)
16. After differentiation into the embryo, one or two cotyledons develop. Seeds with one
cotyledon are called monocots and seeds with two cotyledons are called dicots. (4 pts)
17. amylase catalyzes the hydrolysis of starch into its component sugar units.
(2 pts)
----------------------------------------------------------------------------------------------------------Short Answer
18. Plants have three tissue systems, ground, vascular and dermal. What are the functions
of these systems. (6 pts)
Ground – photosynthesis, storage, support
Vascular – conduct nutrients
Dermal – covering and protection
19. Explain what happens during “double fertilization”. (4 pts)
One sperm fusing with one egg to produce zygote
One sperm fuses with polar nuclei to produce triploid cell that develops into endosperm
20. Plant growth is referred to as being “indeterminate”. What does this mean? (4 pts)
It has no limits, continued growth throughout lifespan.
21. What are the two functions of the suspensor? (4 pts)
Anchor the embryo to the endosperm
Conductor of nutrients
22. Name two ways in which mitosis and meiosis differ. (4 pts)
Mitosis, one division, genetically identical, body cells
Meiosis, two divisions, genetically distinct, sex cells
23. The plant life cycle involves the “alteration of generations”. What is meant by this
term? (4 pts)
Life cycle has both a haploid and diploid phase
24. A typical seed has three fundamental parts. Name these parts. (3 pts)
Seed coat
Endosperm
embryo
25. What role does water play in barley seed germination, name at least two functions.
(4 pts)
Softens seed coat, activates seed biochemistry
26. Complete the following chart (4 pts)
Monocot (Barley)
aleurone layer
Location of Starch Reserves endosperm
Activating Signal
Gibberellic Acid
Dicot (Lettuce)
no aleurone layer
cotyledons
phytochrome
27. What is the function of the endosperm? (4 pts)
Nutrient source for embryo
28. Explain what happens when GA reaches the aleurone layer. (6 pts)
It activates the genes for amylase
Bonus (10 pts)
1. Animal growth is “determinate” meaning that at some point cell division stops and
you have an adult organism. There are, however, a few exceptions. Name two types of
animal cells that exhibit “indeterminate” growth. (5 pts)
Skin, blood
2. Each pollen grain produces two cells. What is the fate of these two cells (what do they
produce/develop into). (5 pts)
Two male gametes and a pollen tube