Question

Allometric growth is
A. Increase in number of cells with growth of individual cells
B. Growth due to multiplication of constituent cells at a constant rate
C. Difference in rate of growth of different parts of the body
D. Growth due to special reserve cells of the body

Answer 1

Hint: Growth is the process of a permanent increase in the size of a cell or an organ. If we observe the growth of several organisms, we can see several patterns of growth. The rate and manner in which different organisms grow are different.

Step by step answer:There are different patterns of growth. If we measure the increased growth per unit growth, we get the growth rate. When we talk about growth, it is seen in an organism as a whole and in individual cells. Some cells multiply way faster than the other cells.
While plotting the growth rate, we get two types of growth. They are arithmetic and geometric growth. In arithmetic growth, only one daughter cell following the cell division continues to grow while the other cell gets differentiated and matures. Meanwhile, in geometric growth, both daughter cells continue division. Growth is further classified into Allometric and isometric growth. Allometric growth, the rate of growth is different in different parts of the body. It is seen in humans too. The growth rates of different organs in the human body are different. Our limbs grow faster than our head. Allometric growth is also seen in animals too. Meanwhile in isometric growth, all organs of the body have the same growth rate. Sponges are the perfect examples of isometric growth. It is isometric growth that enables the organism to preserve their body proportion.
Hence the correct option is C

Note: Auxetic growth is the growth in which the organ or the tissue grows as a result of an increase in the size of cells only. In this type of growth, cell division has a limited role to play. Growth occurs mainly because of the increase in mass and volume of the cell.