Statement-I: Each spermatogonium is haploid and contains 23 chromosomes.
Statement-II: Diploid secondary oocyte gives rise to haploid second polar body and ovum.

Read the following statements and select the correct option. Statement-I : In gymnosperms, endosperm is formed before fertilization and is haploid Statement-II: In angiosperms, endosperms is formed after fertilization and is diploid

Statement-I : Addition of HBr to 1- butene gives two optical isomers. Because Statement-II : The product contains one asymmetric carbon.

Statement-I: Free radical chlorination of n-butane gives 72% of 2-chlorobutane and 28% of 1-chlorobutane though it has six primary and four secondary hydrogens. Because Statement-II: A secondary hydrogen is abstracted more easily than the primary hydrogen.

How many of the given statements are incorrect? A. The ovaries are located on each side of the lower abdomen. B. Mons pubis a cushion of fatty tissue covered by skin and pubic hair. C. A primary spermatocyte completes the second meiotic division leading to the formation of two equal, haploid cells called secondary spermatocytes, which have only 23 chromosomes each. D. The secondary follicles get surrounded by more layers of granulosa cells and a new theca, they are called tertiary follicles.

Given below are the steps involved in oogenesis . Arrange them in proper sequence and select the correct option. 1. Formation of primary follicle due to development of granulosa cells. 2 Division of oogonia and formation of the primary oocyte. 3. Formation of follicles having antrum . 4. Formation of secondary follicles. 5. An unequal division leading to the formation of secondary oocyte i.e. ovum and the first polar body .

Read the following sentences about human reproduction: A. The process of childbirth or parturition is induced by a complex neuroendocrine mechanism involving oxytocin. B. The reproductive cycle of all primate mammals is called the menstrual cycle. C. Most of the major organ systems of the foetus including genital organ systems of the foetus including genital organs are developed by the end of 24 weeks. D . The second meiotic division of secondary oocyte is unequal and results in the formation of an ovum and a second polar body. How many from the above is/ are incorrect ?