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IgorLugansk [536]
3 years ago
13

Compare and contrast the adaptations of free-living flatworms and parasitic flatworms

Biology
1 answer:
sammy [17]3 years ago
4 0

<u>Answer:</u>

Free-living flatworms have developed a nervous system which helps them to sense the food. They have a head at one end of the body and each side of the head has sensory cells. These cells help them to sense chemicals and other movements around them.

 

While Parasitic flatworms don't have any nervous or digestive system as they live on the food digested by the host. They have special hooks attached to their head which help them to attach a host. They have developed some covering called 'teguments' which protect them from digestive liquids.

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How many words can you make out of the letters in scientific method
rodikova [14]
The answer to this question is:

How many words can you make out of the letters in scientific method?
1).Fit
2).Send
3).Sit
4).Toes
5).Domes
6).Time
7).Nice
8).Find
9).Dimes
10).Met
11).Hot
12).The
12).Net
14).Ten
15).Science
16).Doe
17).nose
18).Toe
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Hoped This Helped, Kalmamori22
Your Welcome :)
5 0
3 years ago
Which segment of DNA contains the information necessary to produce a protein?
pentagon [3]
I think its ribosomes
8 0
3 years ago
A plant has the genotype AAbbCcDDEeff, where each letter represents a different gene. This plant is crossed with another whose g
scoundrel [369]

Answer:

The fraction of the offspring that will show the phenotype produced by the recessive c allele is 1024/4096 = 0.25 A-BbccDdE-Ff = 25%

Explanation:

You can calculate the fraction of the offspring that will show the phenotype produced by the recessive c allele by making the punnet square for each gene and then multipling the phenotypic proportions, like this:

Cross) AAbbCcDDEeff     x      AaBBCcddEEFF

Cross For each gene by separately:

  • Parental )        AA    x    Aa

       Gametes)  A    A         A    a

        F1)             2/4 AA  

                          2/4 Aa

  • Parental )        bb    x    BB

         Gametes)  b    b         B   b

          F1)                   4/4 Bb

  • Parental )        Cc    x    Cc

        Gametes)  C    c         C    c

         F1)             1/4 CC

                           2/4 Cc

                            1/4 cc

  • Parental )        DD    x    dd

       Gametes)  D    D          d    d

        F1)             4/4 Dd

  • Parental )        Ee    x    EE

        Gametes)     E     e      E     E

         F1)             2/4 Ee

                           2/4 EE

  • Parental )        ff    x    FF

         Gametes)     f     f      F     F

          F1)             4/4 Ff

So, fraction of the offspring that will show the phenotype produced by the recessive c allele is:

4/4 A-  x  4/4 Bb   x   1/4 cc   x   4/4 Dd   x  4/4 E-   x   4/4 Ff =  

1024/4096 = 0.25 A-BbccDdE-Ff =25%  

6 0
3 years ago
Read 2 more answers
The diagram shows a section of DNA. What is the arrow labeled X pointing to? adenine thymine cytosine guanine
Schach [20]

Answer:

This is one example of a chimp DNA diagram

A G C T A C A G A G

A is Adenin

G is Guanine

C is Citosin

T is Thymine

Explanation:

Adenine

Adenine is an organic molecule found in DNA, ribonucleic acid (known as RNA) and adenosine triphosphate, better known as ATP.

Guanine

Guanine is a purine base found in DNA and RNA that binds exclusively with cytosine to form ribonucleosides called guanosine or deoxyribose to form deoxyguanosine.

Thymine

Thymine is a pyrimidine base found in DNA that binds to adenine.

Cytosine

Cytosine is a pyramid-shaped nitrogenous base that binds to guanine in RNA and DNA as nucleotides and functions as part of the genetic code.

#AnswerForTrees

5 0
3 years ago
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allochka39001 [22]
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The wastes are radioactive and can cause cancer. This is the #1 reason according to my research why it is important to dispose of nuclear waste.

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3 years ago
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