<span>d. Disk soaked in distilled water
Experimentation is a scientific process wherein you test and verify a hypothesis based on its assumption is going to be supported or negated (null hypothesis). Hence experimentation involves the independent and dependent variable, also control variable as a level in the IV. </span>
        
             
        
        
        
Lipids are stored as triacylglycerols and waxes on both animals and plants
<h3>What is lipids ?</h3>
Lipid can be described as an organic compound that is not soluble in water. lipid is an essential component that is needed for proper functionality in both plants and animals.  
In plants, lipids help provide lots of energy that is needed for different metabolic processes that goes on in the plant. Lipids also help fight off pathogens in plants
In animals, lipids also serve as an energy source and they help in the regulation of the different hormones present in the body. Lipid also help signal important molecules when they are required in the body and they also help in the proper digestion of food molecules. 
Read more on lipids here
brainly.com/question/3498396?referrer=searchResults
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Answer:
According to the diagram, cell growth and preparation occur in steps 2 and 4, corresponding to phases G₁ and G₂ of cell cycle.
Explanation:
G₁ phase consists of the beginning of the cell cycle, following the process of previous division, and occurs in a cell that prepares for a next division. In this phase growth depends on the proliferation of mRNA to increase protein synthesis.
G₂ phase —third phase of the cycle— is the continuation of the process of cell growth induced by protein synthesis. Changes occur at the level of cellular components, as preparation of the cell prior to division.
 
        
             
        
        
        
Hormones -- such as melatonin and cortisol; the former signals the body to go to bed, while the latter signals for the sleeping person to wake up -- are created by physiological changes.
        
             
        
        
        
The answers would be:
Genotype                Phenotype
      Tt                      Tall stemmed
      tt                       Short stemmed
Genotypic ratio : 2:2 or 1:1
Phenotypic ratio: 2:2  or 1:1  
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<u>You can read on to see how this was done:</u>
Tall stems (T) are dominant to short stems (t).
First figure out the genotypes of the parents. We have a short-stemmed plant and a heterozygous long-stemmed plant cross. 
For short stem to occur, you need 2 pairs of short alleles. So the first parent would have a genotype of tt.
Heterozygous long-stemmed means that the parent has one of each allele. So the genotype of the second parent would be, Tt. 
Now we can make our Punnett Square.
tt x Tt
<u>       t        t  </u>
<u>T |  Tt  |   Tt</u>
<u>t  |   tt  |   tt</u>
Let's list down the genotypes and phenotypic results.
Genotype        no.         Phenotype
      Tt                 2           Tall stemmed
      tt                  2           Short stemmed
So from that we can answer the other questions:
Genotypic ratio : 2:2 or 1:1
Phenotypic ratio: 2:2  or 1:1