BIOLOGY 2 Marks Questions

• Aid in sperm transport.
• Temporary storage of spermatozoa.

Male accessory glands secretions constitute the seminal plasma. These secretions are rich in fructose, ascorbic acid, citrate, calcium, certain enzymes and prostaglandins. These secretions nourish and activate the spermatozoa to swim.

• They produce male gametes called spermatozoa by the process of spermatogenesis.
• The leydig cells of the seminiferous tubules secrete the male sex hormone called testosterone. Testosterone aids the development of secondary sex characteristics in males.

Functions of the ovary:

• They produce female gametes called ova by the process of oogenesis.
• The growing Graafian follicles secrete the female sex hormone called estrogen. Estrogen aids the development of secondary sex characteristics in females.

1. 30
2. 15

1. A primary spermatocyte is diploid and has 46 chromosomes; it undergoes meiosis I and forms two secondary spermatocytes.
2. A secondary spermatocyte is haploid and has 23 chromosomes; it undergoes meiosis II and forms two spermatids.

1. A - Pelvic wall.
2. B - Clitoris.
3. C - Ova.