Sympatric Speciation- Small part of population becomes a new population without being geographically separated from the parent population
Polyploid:
--> Many sets of chromosomes
If an individual is unable to interbreed with the parent population than it is no longer a part of that species
Adaptive Radiation:
Occurs when many new species arise form a common ancestor
Sympatric Speciation:
Requires the emergence of a reproductive barrier that isolates a subset of a population from the remainder of the population in the same area.
Punctuated Equilibrium:
This model states that species diverge in relatively quick spurts rather than gradually as Darwin had believed
UNIT 10
Chapter 40
Animal form and function
Anatomy- Study of the structures an organism
Physiology- Study of the functions of an organism
Tissues- Groups of cells that have a common structure AND function
4 Types of tissue:
1. Epithelial Tissue-
Occurs in sheets of tightly packed cells, covers the body and acts as a protective barrier
AKA--> Skin
2. Connective Tissue-
Mainly supports and binds other tissue. It consists of scattered cells within an extra-cellular matrix. Some connective tissue are cartilage, tendons, ligaments, bones and.... BLOOD!
3. Nervous Tissue-
This is the nerve cell or neuron. That tissue senses stimuli and transmits signals from one part of the body to other neurons, glands, muscles, and the brain.
4. Muscle Tissue-
Composed of long cells called muscle fibers. Muscle fibers contact when they are stimulated by a nerve impulse. This is the most abundant tissue in most animals. There are three types muscle tissue
1. Skeletal muscle
2. Cardiac muscle
3. Smooth Muscle
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