bio Flashcards
if a population of 100 has 20 births and 10 deaths in a year - what is the growth rate of the population?
.1
what is the carrying capacity of the environment for the population indicated on the graph?
6000
you would expect population oscillations in which example?
a population of small mammals
we would expect slow population growth for which example?
elephant
which survivorship curve would you match to a population of humans?
Type 1
which evolutionary tradeoff do you think humans utilize?
Reproduction and growth & number and size of offspring
which tradeoff cannot be influenced by natural selection?
lifespan after reproduction
which animal is most likely to live the longest because it encounters few hazard factors in the wild?
great white shark
which country has the highest proportion of its population below age 10?
kenya
at which point in time is the population experiencing maximum birth rate but decreased death rate?
b
the carrying capacity of the planet should maintain ecosystems and still provide existing humans with the quality of life found in the United States means fewer overall.
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1) Which of the following statements comparing plants to animals is the most accurate?
e. Both the first and fourth choices are correct.
The total amount of plant matter on earth is more than 10 times the biomass of all the animals.
The longest-living plants live 10 times longer than the longest-living animals.
How do plants circulate food, water, and nutrients?
b. vascular tissue of roots
Monocots differ from dicots in several ways. Which of the following structures is NOT a difference between monocots and dicots?
e. All of the above statements are differences between monocots and dicots.
a. the number of cotyledons
b. stem structure
c. roots
d. flowers
What are the embryonic precursors to leaves in a seedling called?
b. cotyledons
Which of the following correctly describes a difference in stem anatomy between monocots and eudicots?
c. Monocots have vascular bundles distributed randomly through the stem.
All of the following are ground tissue cell types EXCEPT:
b. meristem.
Which of the following is most important in providing structural support in vascular plants?
a. xylem
Sugars produced in the leaves of a plant are transported elsewhere in the plant through:
e. sieve tubes that make up the phloem.
Which of the following is not a part of dermal tissue?
e. dermis
A plant expels oxygen through its ____________ and takes up carbon dioxide through its ___________.
a. leaves; leaves
A new species of plant was recently discovered. It has flowers with five petals and five stamens in each flower. You can conclude that this plant probably has:
b. branching leaf veins.
Parenchyma is a type of:
c. ground tissue.
Roots perform which of the following functions in plants?
a. anchorage
b. absorption
c. storage
d. All of the above are correct.