Biology Forums - Study Force

a) Numerical Response:

Suppose that a population of 3 500 Zebra mussels occupied a rectangular territory 2.00 m by 2.00 m.
Calculate the average density of the Zebra mussel population.

(Record your answer to three significant digits.)

 Answer:  _____ /m2   

hint
 Use the data sheet accompanying the diploma to search out formulas.
Numerical Response:

b) Given that one Zebra mussel releases one million eggs per spawning and assuming that the survival rate is 0.020%, calculate the maximum number of surviving individuals produced in two generations originating with one mussel. Express your answer in scientific notation in the form  x X 10y  mussels.

(Record your answer to two significant digits.)

Answer:   
1.76 x 10^4

hint
 
 2.5 X 106 is an example of scientific notation.  x = 2.5  and  y = 6.

An answer sheet only allows for the recording of the 2.5

However, if this was part of a Written Response question, you may be expected to record all parts of the scientific notation.
 
c) The graph represents a population of Duckweed from a nutrient rich dugout. Random samples were taken from the dugout starting 3 weeks after the ice had melted. The region labelled  Z  on the graph represents
Question 114 options:
 the establishment phase
 
 environmental resistance
 
 the carrying capacity
 
 exponential growth
 
Save
Question 115 (1 point)
Numerical Response:

d) The density of the Duckweed population on the 150th day is _______ /mL.

(Record your answer to three significant digits.)

Answer:  _____ /mL   

 

Hide hint for Question 115
 
 The density formula is an easy formula with which to work.
Be aware of where the area or volume data can be placed in the information for the question.

10.0, 0.0100, 1.24, and 0.160 all have three significant digits

e) Gene frequency in a population can change because of  many factors. From the list below, choose those factors that contribute to gene pool change.

1.availability of food
2.mutations
3.disease
4.genetic drift
5.high temperatures)
6.crowding and injury
7.non-random mating
8.inheritance of acquired characteristics
Numerical Response:

The factors that cause changes in a gene pool are:
(Record your answer in ascending numerical order.)

f) Some Events that Occur During Meiosis

     1.  Gametes are produced.
     2.  Spindles form and homologous pairs of chromosomes separate.
     3.  Centromeres divide and chromatid pairs separate.
     4.  Chromosomes are replicated.

Provide the correct sequence of these four events that occur during meiosis.







 




 

To answer this, you'll need to know the area in m^2. So, first multiple 2 and 2 together to get 4. Then, take the number of mussels and divide it by four. That's the number you put in the open slot.

Hi again, could you update us with the answer? :thi:

:confused: someone please update

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Thank you