Biology College

The diagram below shows the stages of succession in a forest ecosystem. A diagram showing 4 stages of succession in a forest ecosystem. Stage A: A mature forest. A fire occurs, resulting in Stage B, a burnt forest where nothing is growing. Stage C, pioneer plant species grow in the bare ground. More species follow and grow bigger. Stage D: A mature forest with several tree species and younger trees. Which area shows the climax community of secondary succession?

Answers

Answer 1

Answer:

D

Explanation:

just took the test

Answer 2

Answer:

D

Explanation:

Area D shows the climax of secondary succession.

Related Questions

Which statement summarizes a change that occurs during photosynthesis?

Answers

Answer:

It converts light energy to chemical energy.

Explanation:

Its absorbing sunlight and changing in to chemical energy for the plants nutrients.

During photosynthesis, light energy will be changed into chemical energy.

What is photosynthesis?

Photosynthesis was a process used mostly by plants as well as other creatures to transform sunlight into chemical energy which, via cellular respiration, might subsequently be produced to fuel the organism's functions.

What is chemical energy?

Chemical energy was the energy that would be generated while chemical substances engage in a chemical reaction but also change into some other substances.

Therefore, during photosynthesis, light energy will be changed into chemical energy.

To know more about photosynthesis and chemical energy.

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Antimicrobial peptides can do all of the following except:_________A) regulate body temperature.B) target intracellular components.C) insert themselves into target cell membranes.D) disrupt plasma membrane and/or cell wall.E) stimulate leukocytes.

Answers

Answer:

Option A

Explanation:

Antimicrobial peptides cannot regulate body temperature. They can do all of the rest.

=> target intra cellular components.

=> insert themselves into target cell membranes.

=> disrupt plasma membrane and/or cell wall.

=> stimulate leukocytes.

A biologist is studying how green sea turtles choose where to lay their eggs. She makes a hypothesis that because this species is related to other sea turtles through common ancestry, they probably all use the same process. This biologist formed her hypothesis using:________

a. A hunch
b. The unifying theory of evolution
c. Experimentation
d. The scientific method
e. Observations of green sea turtles' behavior

Answers

Answer:

Option b

Explanation:

Hypotheses are carried out as proposed explanation made on the basis of limited evidence which serves as a beginning point for further study.

The biologist in this case has a limited evidence with regards to this species which is just only about its ancestry, so her hypothesis was based on the unifying theory of evolution which is the framework within which biologists ask questions about the living world providing predictions with regards to directions about living things.

The correct answer, unequivocally, is (B).

- This is because she used her knowledge that, from an standpoint of evolution, these turtles were related to each other.

what is cellular affinity in biology?

Answers

Answer:

affinity. Attraction between particles. Biology: A measure of the attraction of one biological molecule toward another molecule, either to modify it, destroy it, or form a compound with it. Examples are enzymes and their substrates, or antibodies and their antigens.

Researchers cross a corn plant that is pure-breeding for the dominant traits colored aleurone (C1), full kernel (Sh), and waxy endosperm (Wx) to a pure-breeding plant wiht the reccessive trains colorless aleurone (c1), shrunken kernal (sh), and starchy (wx). The resulting F1 plants were crossed to pure-breeding colorless, shrunken, starchy plants. Counting the kernals from about 30 eats of corn yields the following data:
Kernel Phenotype Number
Colored, shrunken, starchy 116
Colored, full, starchy 601
Colored, full, waxy 2538
Colored, shrunken, waxy 4
Colorless, shrunken, starchy 2708
Colorless, full, starchy 2
Colorless, full, waxy 113
Colorless, shrunken, waxy 626
6708
A) Why are these data consistent with genetic linkage among the three genes?
B) Perform a chi-square test to determine if these data show significant deviation from the expected phenotype distribution.
C) What is the order of these genes in corn?
D) calculate the recombination fraction between the gene pairs.
E) what is the interference value for this data set?

Answers

D) #recombinant=116+601+4+2+113+625=1462

   #nonrecombinant=2538+2708=5246

  RF=R/(N+R)=1462/6708=0.2

  E) I=1-Q

I-interference

Q-coefficient of coincidence

Q=O2Xo/E2xo(2xo-double crossovers)

O2xo=6

P=(distance from C1 to Sh/100)*(distance from Sh to Wx/100)

=(3.38/100)*(18.28/100)=0.006

E2xo=0.006*6708=40.248

Q=6/40.248=0.15

I=1-0.15=0.85

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