Answer:
Label A: Nucleus
Nucleus can be described as the organelle in which the DNA is enclosed. The nucleus is found in every eukaryotic cell.
Label B: Vacuole
Vacuole can be described as an organelle which is used to store material such as waste. Hence, vacuole is known to be the storage house of a cell.
Label C: Ribosomes
Ribosomes can be described as structures which are present usually on the rough endoplasmic reticulum. The process of translation occurs in the ribosomes and they are hence known to be the protein manufacturing units if a cell.
Label D: Centrioles
A centriole is a cylindrical organelle which is usually made up of the protein tubulin.
Answer:
A person with blood type AB as the genotype AB
Explanation:
A person with blood type A could have the genotype AA or AO. A person with blood type B could have the genotype BB or BO. A person with blood type AB as the genotype AB. And a person with blood type O has the genotype OO.
Answer: The answers are fossil records, DNA evidence and case studies
Explanation
Answer: Because plants absorb carbon dioxide, <u>they suck up some of the extra CO2 in the air</u> and <u>can even buy us extra time on global warming. </u>
Answer:
directional selection
Explanation:
Selection is of three types -
1. diversifying
2. stabilizing
3. directional
These selections occur in a given environment to either increase, decrease or maintain the genetic variance of the population.
A type of natural selection in which the phenotype of the species of a given population tends to shift away from the mean and towards one extreme phenotype is known as directional selection.
In the given situation, it is given that the extreme phenotype of having thickest leaves is being favored in drier climate and hence, this is an example of directional selection.
