Answer:
The correct answer is - stem cells.
Explanation:
Stem cells can give rise to all tissues and organs in the body. These cells can differentiate into any form of cells, which allows them to repair tissues that have been damaged by various physiological or natural ways
There are two types of stem cells: Adult Stem Cells and Embryonic stem cells.
Cells that are present in the bone marrow or umbilical cord of a newborn baby and can be divided as Hematopoietic, a cell that can form blood cells and the immune system, and mesenchymal that form the body's cartilage, bones, muscles and other.
Embryonic stem cells are found on at blastocyst stage of embryo. These cells can transform into any type of tissue in the human body, which increases their treatment potential.
Answer:
It is B: provides for the tight regulation of all physiological variables
Explanation:
Trust me on that one.
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Homeostasis:
In biology, homeostasis is the state of steady internal, physical, and chemical conditions maintained by living systems. This is the condition of optimal functioning for the organism and includes many variables, such as body temperature and fluid balance, being kept within certain pre-set limits.
Answer;
Angiosperms are grouped into monocots and dicots.
Explanation;
-Angiosperms are vascular seed plants in which the ovule (egg) is fertilized and develops into a seed in an enclosed hollow ovary. Their ability to flower sets them apart from non-flowering plants, also known as gymnosperms, allowing them a successful means of reproduction.
-Angiosperms can be divided into two categories, Monocotyledons (monocots) and dicotyledons (dicots). This distinction is based on the number of cotyledons, the food storage structures in their seeds. Monocots have one cotyledon while dicots have two.
Natural Selection Theory: The Natural Selection Theory is given by Charles Darwin. There are 3 principles of Natural Selection Theory
Variation, Heredity, Selection.
Explanation:
Natural Selection is the cause of evolution. The adaptation to the environment is the key to survival according to Charles Darwin.
The story behind Natural Selection is his visit to Galapagos Islands in 1835. Here he noticed the finches of different varieties in their beaks and food sources adapted to different environments i.e from different islands. This pushed him to think about those adaptations and eventually theory of natural selection.
