Sort of Questions in Biology 102

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Onda, Kristal H. TTH 8:30-10:00 am
BSAC3

BIOLOGY

1. How plants grow and develop?
Just as humans have essential needs for survival, all plants require several basic elements to grow and thrive, including…
Soil minerals (the more nutrient-rich the soil, the better the plant will grow)
Water
Air (carbon dioxide, hydrogen and oxygen)
Sunlight
Proper soil temperature
Proper air temperature
How much a plant needs of each element initially depends on the plant's original habitat. For example, a rainforest plant that requires consistently moist and warm conditions could obviously not survive in a desert.
But with human coercion, a plant’s ability to survive doesn't have to completely depend on nature. Organic farmers, gardeners, scientists and researchers before you have “changed” the characteristics of many desirable plants in order to allow them to thrive in other environments.
Continuing with the rainforest plant example, if a grower notices that one plant of her crop doesn't need quite as much water in order to thrive, she can cross-pollinate that plant with another more draught-tolerant plant in an attempt to begin a new "line" (called "variety" in the gardening world) of more draught-tolerant rainforest plants. Over time and continued cross-pollination of more and more draught-tolerant plants, that rainforest plant can "learn" to survive in conditions that are much different than its native lands.
This intentional cross-pollination can apply to any characteristic of the plant... from draught-resistance to flower color, fruit flavor and root depth.

Plant growing needs: External Factors | Internal Factors | Light | Plant hormones | Carbon dioxide | Genetic factors | Water | - | Nutrients | - | Temperature | - | Humidity | - | Wind | - | Gravity | - | Day length | - | Space to expand | - | Appropriate environmental setting | - |

THREE MAJOR three major functions that are basic to plant growth and development
Photosynthesis – The process of

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