Growth/Reproduction
Growth and reproduction are one of the most important stages in a life of an organism. Without growth, organisms won't be able to be born and reproduction won't be possible.
Reproduction
Reproduction starts from when the 'mother' egg is fertile.
As the sperm from the father of another organism enters, it swims through the cervix and into the Fallopian Tubes. The Fallopian Tubes are where the mother's eggs are stored. Millions of sperm race to be able to fertile an egg- many which are lost.
Once a sperm makes it to an egg, it creates a protection around the egg which disables other sperm from going close to an egg. The egg which is fertile is then called the zygote. They zygote consists of the cub's DNA, half from the father's sperm and another half from the mother's egg.
The zygote falls down the Fallopian Tubes and sticks to the lining of the uterus. As the egg turns fertile, the zygote starts to sub divide. This is the start of the production of cells. As the zygote is sub divided, it starts to create a ball of inner cells. The zygote, or mother cell, sub divides into many more cells and soon turn into daughter cells.
Further and further, cells keep dividing- each deciding what roles they would like to play in the organism. The sack of cells split into two parts, inner and outer. The inner cells are the embryo and the outer cells nourish and protect the embryo.
After a few more weeks, the embryo has three layers:
After more growth, the egg will turn into a young cub. Grizzly bears are known to give birth to two cubs at a time. Eggs can be fertilized by two sperm at the exact time, creating cub twins.
As the sperm from the father of another organism enters, it swims through the cervix and into the Fallopian Tubes. The Fallopian Tubes are where the mother's eggs are stored. Millions of sperm race to be able to fertile an egg- many which are lost.
Once a sperm makes it to an egg, it creates a protection around the egg which disables other sperm from going close to an egg. The egg which is fertile is then called the zygote. They zygote consists of the cub's DNA, half from the father's sperm and another half from the mother's egg.
The zygote falls down the Fallopian Tubes and sticks to the lining of the uterus. As the egg turns fertile, the zygote starts to sub divide. This is the start of the production of cells. As the zygote is sub divided, it starts to create a ball of inner cells. The zygote, or mother cell, sub divides into many more cells and soon turn into daughter cells.
Further and further, cells keep dividing- each deciding what roles they would like to play in the organism. The sack of cells split into two parts, inner and outer. The inner cells are the embryo and the outer cells nourish and protect the embryo.
After a few more weeks, the embryo has three layers:
- Top layer: Also called the Ectodern, turns into the skin layers
- Middle layer: Also called the Mesodern, is primarily where the circulatory system and the bones, muscles kidneys are formed
- Bottom layer: Also called the Endoderm, is where the lungs, intestines and bladder are developed.
After more growth, the egg will turn into a young cub. Grizzly bears are known to give birth to two cubs at a time. Eggs can be fertilized by two sperm at the exact time, creating cub twins.
Growth
Growth is the replacing and creating of cells. Though growth is most commonly seen as change in height or looks, growth has already started from the start of when the egg is fertile.
Cells are continually replaced, repaired and created during the life cycle of a grizzly bear. The life cycle of the grizzly bear goes alike to a human life cycle due to both being living organisms.
Cells are continually replaced, repaired and created during the life cycle of a grizzly bear. The life cycle of the grizzly bear goes alike to a human life cycle due to both being living organisms.
Human Life Cycle
1.
Male sperm fertilizes females egg, called the zygote. The cell (mother cell) rapidly divides into cells (daughter cells) which later on turn into specialized parts of the body. |
2.
The fetus grows in the uterus for 40 weeks until ready to be born. |
3.
When the baby is born, the ages 1 to 2 are the toddler stages. Babies learn how to walk, talk and know more about the outside world. |
4.
Further on, childhood is where habits and behaviors are developed. Children can easily grasp any habits which are displayed to them. |
5.
Adolescence is during the age 12 and 18. Puberty kicks in and teenagers mature. Voices of boy and girls get periods. Adolescents are more mature, sexually aware and independent. |
6.
Adulthood ranges from ages 18 and above. Humans are fully grown and independent. They don't rely on parents, and instead rely on life lessons. They reproduce children who will undergo the life cycle. |
7.
The final stage of humans. The bodies of older men and women slowly wear out until death. |
Grizzly Life Cycle
1.
Male sperm fertilizes females egg, or the zygote, divide quickly creating specialized cells, organs and systems of the cub. |
2.
The fetus grows inside the mother's uterus. The cubs are born during hibernation period which ranges from the end of January - Early March. |
3.
Once the cub is born - it still continues to grow. Cubs are usually born with the length of 15cm-20cm and weight of 225g-400g. Cubs grow very quickly after birth due to the high concentration of fat in the mother's milk. The 'toddler' stage is during 1 to 2 years. |
4.
The childhood stage of the cub is during 3-4 years. This stage is where cubs start to learn more about the outside world. They learn habits and lifestyle. |
5.
Adolescence stage takes place between 4-5 years of age. Female cubs can now get reproduce cubs up until the age of 10. Grizzlies under adolescence grow fairly big. Grizzlies can now reproduce more cubs to undergo the cycle |
6.
From 5-10 years, cubs have grown into fully grown grizzly bears and gone into the adulthood stage. They are independent and can fend off for themselves. |
7.
From 10-25 years, grizzly bears have aged. Most female grizzlies are unable to reproduce. Grizzlies must spend the last 15 years of their lives getting ready to pass away. |
Biotic and Abiotic factors
Organisms, as they grow and prosper, must rely on environmental factors. Things which enable them to do things such as grow and reproduce. There are two types of factors, abiotic (non-living) and biotic) living.
Abiotic and biotic factors are the complete opposites to each other but work the same way. They all rely on each other and are 'interrelated'. If one factor is unavailable, all the other factors turn unavailable as well - which is what makes organisms so reliant on them.
Abiotic and biotic factors are the complete opposites to each other but work the same way. They all rely on each other and are 'interrelated'. If one factor is unavailable, all the other factors turn unavailable as well - which is what makes organisms so reliant on them.
Abiotic
Abiotic factors are factors which are non-living. Some factors are :
Biotic
Biotic factors are factors which are living. Some factors are:
Relying on abiotic/biotic factors
Organisms rely on certain factors and are part of one system. If one factor is disrupted, the whole system fails.
For example: Without water, rock and soil will be useless. Without rock and soil, no plants can be grown. If no plants are grown, no vegetation can be eaten. Without vegetation, animals will starve and without animals and vegetation, no food can be eaten.
Each factor is reliant one or more parts of the system.
Water: Water is responsible for hydrating plants and animals. Water is also responsible for balancing out temperature.
Temperature: Certain temperatures are needed for organisms to function properly.
Rocks and soil: Rocks and soil are responsible as an area to grow plants and house certain organisms.
Sunlight: Sunlight is needed for plants to grow (photosynthesis), used for warmth and used for balancing out temperature.
Pathogens: Pathogens are responsible for killing certain organisms, but are also important for the well being of organisms.
Plants: Plants are responsible for the exchanging of gases (carbon dioxide to oxygen) and are responsible for feeding many organisms.
Animals: Animals are responsible for the nourishment of many organisms, causing them to gain vitamins, minerals and vital nutrition.
For example: Without water, rock and soil will be useless. Without rock and soil, no plants can be grown. If no plants are grown, no vegetation can be eaten. Without vegetation, animals will starve and without animals and vegetation, no food can be eaten.
Each factor is reliant one or more parts of the system.
Water: Water is responsible for hydrating plants and animals. Water is also responsible for balancing out temperature.
Temperature: Certain temperatures are needed for organisms to function properly.
Rocks and soil: Rocks and soil are responsible as an area to grow plants and house certain organisms.
Sunlight: Sunlight is needed for plants to grow (photosynthesis), used for warmth and used for balancing out temperature.
Pathogens: Pathogens are responsible for killing certain organisms, but are also important for the well being of organisms.
Plants: Plants are responsible for the exchanging of gases (carbon dioxide to oxygen) and are responsible for feeding many organisms.
Animals: Animals are responsible for the nourishment of many organisms, causing them to gain vitamins, minerals and vital nutrition.