A.
Natural selection.
Migration.
Mutations.
<h2>Answer </h2>
Blood is carried by a Superior and Inferior Vena Cava toward the heart
<u>Explanation </u>
Most veins transport deoxygenated blood through the tissues returning to the heart except pulmonary and umbilical vein that transfers oxygenated blood to the heart whereas arteries carry blood away from the blood. The main blood vessels aorta, superior vena cava, and inferior vena cava carry deoxygenated away from the heart to lungs while pulmonary veins carry the oxygenated that is oxygen-rich blood from lungs to the heart.
Binary fission is a type of asexual reproduction seen in prokaryotes, such as archaea and bacteria.
Binary fission is the formation of daughter cells by the separation of an organism into two parts. The division of the genetic material occurs by the method of duplication. The daughter cells are identical to each other. The examples of organisms that undergo binary fission are: Escherichia coli, Salmonella enterica and Clostridium botulinum.
Asexual reproduction is the process of producing new organism without the fusion of gametes. Only one parent can give rise to offspring. There are several methods of asexual reproduction. These are: binary fission, fragmentation, budding, vegetative propagation and spore formation.
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Answer:
Option-C
Explanation:
The M phase of the cell cycle proceeds in the four phases: prophase followed by metaphase then anaphase, and telophase.
These sub-phases can be easily distinguished as the genetic material move in the cell in various form and the changes become characteristic of the subphases.
During metaphase, the chromosomes are aligned at the center of the cell or at the imaginary equatorial plate. Since it is mentioned that the drug shows its effect when the chromosomes are aligned at the equatorial plate therefore he is referring to the metaphase of the cycle.
Thus, metaphase is correct.
Answer:
a substance that takes part in and undergoes change during a reaction.
Explanation:
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