Cyanobacteria, also known as blue-green algae, are found in vast quantities in fresh and salt water. Cyanobacteria are able to conduct photosynthesis. By utilising energy from the sun, they produce carbohydrates from water and carbon dioxide. As a byproduct, they produce oxygen. So cyanobacteria provided oxygen to the atmosphere that allowed other lifeforms to develop.
Answer:
HYDRA
Explanation:
The nerve cells are scattered in each layer of the body wall and these neurons send information from sensory organs. Based on the given choices above, the organism that has a nerve net that allows it to respond to a stimulus in a coordinated way is the HYDRA.
The three major islands are Japan, Indonesia and New Zealand.
Answer:
The correct answer is "Meiosis produces cells that differ genetically from the parent cell".
Explanation:
In contrast with mitosis, which is the cellular differentiation that produces somatic cells; meiosis produces cells that differ genetically from the parent cell. Meiosis is a special type of cellular differentiation that reduces the genetic material by half, and results in the creation of four haploid cells that are genetically distinct from the parent cell. Meiosis allows for the maturation of sexually reproducing cells, and the genetic variations of these cells is one factor that allows for genetic variations among sexually reproducing species, such as humans.
Answer:
The cell wall sends signals for the cell to enter the cell cycle in order to divine and grow
Explanation:
The cell wall is porous allowing some substances, including proteins, to pass into the cell while keeping other substances out