Answer:
ovum
Explanation:
The ovum is produced from oogonia or ovum 'mother cells' through a process called oogenesis in the ovary. The ovum is not only among the largest cells of the body, it is also specialized to ensure accurate fertilization by exactly one sperm cell.
Answer: Blood contains numerous biconcave cells called erythrocyte , contained in a featureless matrix called plasma
Explanation:
Blood is a liquid contain in the body of man and animals that transport the necessary nutrients and oxygen to the cell and then takes away metabolic waste from the cell. There are numerous cells in the body which are the Red blood cells and also the red blood cell.
This red blood cell is also called erythrocyte which is the numerous biconcave cells. This white blood cells and erythrocytes are all in the blood plasma. Both the erythrocytes (i.e red blood cell) and the white blood cell are all contained in a featureless matrix called the plasma.
This plasma is made up of blood, water, carbon dioxide, dissolved proteins, and hormones.
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A) true
Answer:
The spindle fibre is necessary to separate the sister chromatids into opposite sides of the cell.
Please find detailed explanation below
Explanation:
Mitosis is the cell division that produces two daughter cells that are genetically identical to the parent cell. Mitosis occurs in stages viz: prophase, metaphase, anaphase and telophase. The replicated chromosome, aligns at the centre of the cell in the METAPHASE stage and separates into opposite poles in the ANAPHASE stage.
This alignment (at the equator) and separation into opposite pole is possible with the aid of a structure called SPINDLE FIBRES. Spindle is a structure formed from microtubules, which attach to the kinetochores (located in the centromere) of each replicated chromosome to separate them from one another. Hence, the purpose of the spindle fibre during mitotic division is to separate the GENETIC MATERIAL of a parent cell into two daughter cells.
