Which of the following is based almost entirely on stratigraphy, or the order in which rock layers are found in a given area?

absolute dating

relative dating

dendrochronology

radiometric analysis

option (2)

Explanation:

Relative dating is the efficient method that helps in determining events that has taken place in the past and also helps in identifying the older and the younger rocks. The events that are determined using this method, can clearly mark the boundary between the rocks of two distinct ages. It does not provide the exact age of an object or a fossil, thereby being its limitation but it gives the overall stratigraphy of the area.

Thus the correct answer is option (2)

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.