Answer:2
Explanation: Sperm cells in plants are found inside the pollen grain. When the pollen grains fall on the stigma, the pollen raptures and forms a pollen tube then the sperm cells pass through the pollen tube to the ovary.
Enzymes help speed up chemical reactions in the human body. They bind to molecules and alter them in specific ways. They are essential for respiration, digesting food, muscle and nerve function, among thousands of other roles.
20. Cell Membrane 19. Mitochondria 18.<span> Osmosis</span>
Answer:
The right order is
incomplete dominance ==> 2
polygenic inheritance ==> 3
codominance ==> 1
Many physical characters depend on many different factors, each of which is determined by different genes. This is called polygenic inheritance.
Codminance: The phenotype of each allele is expressed simultaneously in heterozygotes.
Incomplete Dominance: An intermediate phenotype is obtained between the two dominant alleles.
The answer is; donation of a proton to water
Acids are proton donors. As viewed in the equation, the lactic acid partially dissociates in the water to form a conjugate base and hydronium ions. This is a property of an acid. The water acts as a base is donated a hydrogen ion be the lactic acid to form a conjugate acid H3O+.
