A pH is an indicator of acidity and alkalinity nature of a solution. The acidic solutions have low pH value and the basic solutions have high pH value. Some solutions are neither acidic nor basic they are called as neutral (pH = 7). Below the value of 7 the solution is considered to be acidic and above 7 considered to be basic.
According to the given situation, the pH value of 7.6 indicates that the soil is alkaline in nature. Adding sulfur to the soil will lower the pH of the soil. The soil bacteria in the soil will convert the sulfur into sulfuric acid. The accumulation of sulfuric acid in the soil will lower the pH of the soil. As, the plants growing in the alkaline soil are subjected to yellowing of the leaves and chlorosis.
Y chromosomes are the male chromosome. A person with an XY sex chromosome pair will be male while that with an XX sex chromosome pair will be female. This is because the Y chromosome has a male-determining gene called the SRY. This gene is responsible for the development of testis.
Which of the following factors contributes to the distribution of biodiversity on Earth?
Inter-species interaction contribute greatly to the distribution of biodiversity on earth as it gives room for migration which helps to increase biodiversity
There are three different alleles (A,B,C) which are responsible for coat coloration but only combination of two can move forward because there are two loci at every homologous pair of chromosomes.
Thus, six combinations can be formed as AA, AB, AC, BB, BC, CC.
In mosses gamete are produced by MITOSIS; In ferns gametes are produced by MITOSIS.
Explanation:
Ferns usually grow way bigger than mosses and they are both primitive plants. In ferns the gametes, sperm and eggs are formed by mitosis when there is a suitable place for development.
