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Meiosis, Transpiration, Monocots, Dicots, Plant Cell, Angiosperms, Fungi, Algae
The Events of Meiosis and the Importance of Prophase 1
Generally, meiosis has two divisions of events. Each constitutes 4 phases of same names but of different division number. They are prophase, metaphase, anaphase, and telophase. From Meiosis of Access Excellence, the events in meiosis can be summarized as the following.
Prophase 1 - chromosomes duplicate into a pair of chromatid. Later, exchanging of fragments or crossing-over may occur.
Metaphase 1 - aligning of chromosome pairs at the center of the cell.
Anaphase 1 - separation of homologous pairs to opposite poles of the cell.
Telophase 1 - homologous pairs separate and forms two daughter cells
Prophase 2 - no replication of DNA
Metaphase 2 - aligning of chromosomes at the center of each cell
Anaphase 2 - the chromatids separate moving to opposite cell direction
Telophase 2-4 cells are formed each containing one chromosome.
Prophase 1 is essential because it is this phase where chromatids become visible, allowing the replication and the development of chromosomes.
Transpiration and How it Affects Water Movement in Plants
Transpiration is the process of water loss in plants.This occurs when water evaporates from plants through the tiny pores called stomata. Transpiration causes the roots to pull more water from the soil into the plant, replacing water that is lost.
Anatomical Differences Between Monocots and Dicots
Following is a table of differences between monocots and dicots (from Flowering Plant Organizations, and Monocots vs. Dicots)
Characteristic
Monocots
Dicots
Number of cotyledons
Single cotyledon
Two cotyledon
Pollen structure
With single pore or furrow
With three pores or furrows
Number of flower parts
In multiples of three
In multiples of four or five
Leaf veins
Parallel venation
Netted/Reticulated venation
Stem vascular arrangement
Scattered rings of vascular bundles in stem ring of vascular bundles
Root development
Roots are adventitious
Roots develop from radicle
Second growth
No secondary growth
Oftentimes with secondary growth
Parts of a Plant Cell
Cell Wall. It is the outer part of the cell that determines the cell's shape. Cell wall supports and protects the cell.
Cell Membrane. A thin double-layer membrane visible only in microscope. The substances that passes through the cell are regulated by the cell membrane.
Cytoplasm.….....