The answer is the anther because an ovule and an ovary are female reproduction parts and a pollen grain does not produce sperm nor is it hard. 
        
             
        
        
        
Anti-bodies. This is not a hard question to answer, as you can just copy/paste the question into a search engine to get an adequate answer.
        
             
        
        
        
Adipose cells first is a connective tissue cell that is specialized to synthesize  and contain large fat or  globules. Adipose cells can be categorized in two. the first is the white adipose cells, which contain large fat droplets and only a small amount of cytoplasm and flattened, non centrally located nuclei.
        
             
        
        
        
Environmental factors typically activate genes in a cell by causing the cell to transcribe specific DNA segments to mRNA for translation.
This interaction is an example of environmental factors affecting <u><em>genetic expression</em></u>. In these situations, the environment causes specific segments of DNA to be expressed, meaning they are transcribed to mRNA and subsequently used to form proteins.
Meanwhile, other parts of the genome remain or are forced to be silent. This can be a result of mutations or simple biochemical reactions between the environment and the genome.
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<h3><u>Answer;</u></h3>
B 
<h3><u>Explanation;</u></h3>
- Smooth muscle is found in the walls of hollow organs throughout the body. 
- Smooth muscle contractions are involuntary movements triggered by impulses that travel through the autonomic nervous system to the smooth muscle tissue.
- <u>The smooth muscle of the alimentary canal or the digestive tract facilitates the peristaltic waves that move swallowed food and nutrients.</u>