BIOLOGY 100 The growth of a plant is indeterminate

1.
The growth of a plant is indeterminate. This means that
A) plant growth does not stop at a certain size.
B) plants do not have specialized tissues.
C) plant growth is not regulated by hormones.
D) plant growth occurs at a constant rate all year.
2.
For your final examination before you receive your degree from Penn State, you have been given
a slide that contains an unknown tissue from a multi-cellular eukaryote. You have been asked to
identify if that tissue is from an animal, a fungus, or a plant. As you stare through the microscope
at the slide, you remember that you learned the major differences between these cells in Biology
11. You look for the presence of ______, found only in plant cells, and the absence of ______,
never seen in animal cells. The cells that you are looking at have a cell wall and do not have
chloroplasts. You confidently circle ______ on the answer sheet. Biology 11 has saved the day!
A) chloroplasts; mitochondria; animal
B) mitochondria; chloroplasts; animal
C) chloroplasts; cell walls; fungus
D) mitochondria; cell walls; fungus
3.
Competition between species can be reduced as a result of character displacement. This is
because
A) one of the species becomes extinct.
B) the species will no longer compete for the same resource.
C) the niche of at least one of the species is changed.
D) Both B and C are correct.
4.
As energy flows through the food web in an ecosystem, the amount of energy that is transferred
from one trophic level to the next trophic level
A) increases.
B) stays the same.

C) decreases.
D) may increase or decrease, depending upon the system.
5.
All of these organs are part of the digestive system except the
A) pancreas.
B) kidney.
C) tongue.
D) stomach.
6.
Autotrophs are organisms that
A) obtain energy by breaking down tissues of organisms that have died.
B) harness external energy sources to produce complex chemical compounds.
C) depend directly on primary producers for their energy and nutrients.
D) eat other autotrophs to obtain energy.
7.
Which of the following could be considered to be both a biotic and abiotic component of an
organism's environment?
A) sunlight
B) temperature
C) water
D) metabolic wastes
8.
Peristalsis describes the action of the _______ the digestive tract as food moves through the
system.
A) cells lining
B) muscles surrounding

C) blood vessels supplying
D) mucus secreted by
9.
When a person’s diet is missing a certain nutrient or nutrients, they are said to be
______________.
A) undernurished
B) malnurished
C) anorexic
D) all of the above are true
10.
Which of the following gives the correct order for energy flow through an ecosystem?
A) primary producers ? secondary producers ? tertiary producers
B) primary consumers ? primary producers ? secondary producers
C) secondary consumers ? primary consumers ? primary producers
D) primary producers ? primary consumers ? secondary consumers
11.
Which of the following would not be true of a wind pollinated species of plant?
A) It would produce large amounts of pollen.
B) It's flowers would produce large amounts of nectar.
C) Members of the species would grow relatively close together.
D) It would produce small, inconspicuous flowers.
12.
Chemosynthesis refers to a process that is carried out by
A) almost all plants.
B) bacteria that live at deep-sea hydrothermal vents.

C) plants specialized to live in the desert.
D) fungi in tropical rain forests.
13.
Of the 20 amino acids required by human beings, nine of these are considered to be essential
amino acids because
A) all human carbohydrates contain these nine amino acids.
B) these nine amino acids are the only ones used in human proteins.
C) humans cannot synthesize these nine amino acids.
D) these nine amino acids are lacking in animal-based foods.
14.
Plants use their roots to acquire nutrients from the soil. Minerals must enter the roots through
____________ while water enters roots through ___________.
A) active transport; active transport
B) osmosis; active transport
C) active transport; osmosis
D) osmosis; osmosis
15.
If a population is in equilibrium, the
A) birth rate will be greater than the death rate.
B) number of individuals will increase each year.
C) birth rate will be equal to the death rate.
D) number of individuals will decrease each year.
16.
Which of the following is not a characteristic of animals?
A) multicellularity
B) heterotrophy

C) active movement
D) cell walls
17.
Which one of the following aspects of plant biology is not directly involved in maintaining an
adequate supply of water for the entire plant?
A) phloem
B) roots
C) xylem
D) transpiration pull
18.
Which sequence gives the correct order of the levels of organization (lowest to highest) in
multicellular animals?
A) organ systems - organs - cells - tissues
B) tissues - cells - organs - organ systems
C) cells - tissues - organ systems - organs
D) cells - tissues - organs - organ systems
19.
The fundamental niche of an organism is determined by ______ factors, while the realized niche
is determined by ______ factors.
A) biotic; abiotic
B) abiotic; biotic
C) biotic; biotic
D) abiotic; abiotic
20.
Which of the following statements best describes a commensal symbiotic relationship between
two species?
A) Both species benefit.
B) One species benefits and the other is unaffected.

C) One species benefits and the other is harmed.
D) Both species are harmed.
21.
The ability of plants to respond to light by growing toward a light source is an example of
A) geotropism.
B) photoperiodism.
C) phototropism
D) thigmotropism
22.
Which of the following aided the colonization of land by plants?
A) alternation of generation
B) plant/fungal associations
C) auxin
D) none of the above
23.
_______ is the pigment that allows plants to respond to changes in daylength.
A) Chlorophyll
B) Auxin
C) Melanin
D) Phytochrome
24.
Which structure(s) do most plants use to acquire the energy that they need for cellular processes?
A) the roots
B) the leaves
C) the stem
D) all of the above structures are used by plants to acquire energy

25.
When they winter in Central and South America, robins form flocks and feed on fruit. During the
summer, they migrate to North America, where they feed on caterpillars, earthworms and other
animals. These birds are best described as
A) herbivores.
B) omnivores.
C) detrivores.
D) carnivores.