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What is the mitotic index for the onion root tip?
The mitotic index for the onion root tip is typically around 18-20%, meaning that around 18-20% of cells in the onion root tip are actively undergoing mitosis at any given time. This high mitotic index is due to the rapid growth and development of the root tip.
Why are root hairs not found in the elongation region?
Root hairs are specialized structures that develop near the root tip to increase surface area for absorption of water and nutrients. In the elongation region of the root, cells are actively dividing and elongating to increase root length, so there is limited space and energy for the formation of root hairs in this region. Root hairs are more prevalent in the mature region of the root where cells are specialized for absorption.
Which section of the root has root hairs?
The region of the root where root hairs are located is called the root hair zone. It is found just behind the root tip in the zone of maturation where new cells differentiate into root hairs to absorb water and nutrients from the soil.
Why root tip of an onion is an ideal specimen for examining mitotic division?
The root tip of an onion is an ideal specimen for examining mitotic division because it contains actively dividing cells at the root apex. These cells are in different stages of mitosis, making it easy to observe and study the process of cell division under a microscope. Additionally, onion cells have large, clear chromosomes that are easily visible, aiding in the observation of mitotic phases.
Where are the smallest cells of the root tip located?
The smallest cells of the root tip are typically located in the meristematic region, which is the actively growing area of the root where new cells are continuously produced. These cells are important for root growth and development.
What does mitotic activity at the meristem root accomplish?
Primary growth
Why root tips are placed in 10 percent hydrochloric acid mitotic index?
Root tips are placed in 10% hydrochloric acid to break down the cell walls and release the cells for analysis. The mitotic index is calculated as the ratio of cells in mitosis to the total number of cells examined, providing information on the rate of cell division in the root tip. This method helps to determine the growth activity and health of the plant.
Why is the root tip an ideal specimen is ideal for examining mitotic division?
Root tips are very active in mitotic cell division as the roots grow deeper and broader in their search for water and nutrients, as well as anchorage in the soil.
Why is region of meristmatic activity is important in roots?
Meristems bring about the growth or buds and production of a plant, from its beginnings as a root.
What is the mitotic index for the onion root tip?
The mitotic index for the onion root tip is typically around 18-20%, meaning that around 18-20% of cells in the onion root tip are actively undergoing mitosis at any given time. This high mitotic index is due to the rapid growth and development of the root tip.
Gardenia gummifera root as a diabetic activity?
gardenia gummifera root as a diabetic activity
In which region of a root do you find undifferentiated cells?
the undifferentiated cell is located in the ground meristem region.
Why are root hairs not found in the elongation region?
Root hairs are specialized structures that develop near the root tip to increase surface area for absorption of water and nutrients. In the elongation region of the root, cells are actively dividing and elongating to increase root length, so there is limited space and energy for the formation of root hairs in this region. Root hairs are more prevalent in the mature region of the root where cells are specialized for absorption.
Which section of the root has root hairs?
The region of the root where root hairs are located is called the root hair zone. It is found just behind the root tip in the zone of maturation where new cells differentiate into root hairs to absorb water and nutrients from the soil.
Why is a root hair that shape?
root hair, the rhizoid of a vascular plant, is a tubular outgrowth of a trichoblast, a hair-forming cell on the epidermis of a plant root. As they are lateral extensions of a single cell and only rarely branched, they are invisible to the naked eye. They are found only in the region of maturation of the root. Just prior to the root hair cell development, there is a point of elevated phosphorylase activity
Why root tip of an onion is an ideal specimen for examining mitotic division?
The root tip of an onion is an ideal specimen for examining mitotic division because it contains actively dividing cells at the root apex. These cells are in different stages of mitosis, making it easy to observe and study the process of cell division under a microscope. Additionally, onion cells have large, clear chromosomes that are easily visible, aiding in the observation of mitotic phases.
What is the largest region of the primary root called?
The largest region of the primary root is the cortex. It is made up of loosely packed parenchyma cells.
