Define the terms pollination and fertilization. Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
OR
Describe in brief the role of (i) testis (ii) seminal vesicle, (iii) vas deferens, (iv) ureter and (v) prostate gland in human male reproductive system.
Define the terms pollination and fertilization. Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
OR
Describe in brief the role of (i) testis (ii) seminal vesicle, (iii) vas deferens, (iv) ureter and (v) prostate gland in human male reproductive system.
Pollination is the process in which the transfer of pollen grains takes place from anther to stigma for the purpose of fertilization in plants.
Fertilization refers to the fusion of male and female gamete.
Diagram of pistil showing formation of pollen tube
OR
1.Testis: The testes are the male reproductive organs that are located outside the abdominal cavity within a pouch called scrotum. It produces sperms and also produce a hormone called testosterone, which brings about secondary sexual characters in boys.
2.Seminal vesicles: Seminal vesicles secrete mucus and alkaline fluid that helps the sperm to swim and also neutralizes the acidic condition in vagina.
3.Vas deferens: It carries sperm from the vasa efferentia to the urethra.
4.Ureter: When blood is filtered by the kidney, the waste material (urine) is passed on to urinary bladder via the ureters. The function of ureter is to carry urine from the kidney to the urinary bladder.
5.Prostate glands: It produces an alkaline fluid (prostatic fluid), which is a constituent of the semen. The prostatic fluid provides motility, longer survival period (neutralizes the acidic environment of the female reproductive tract) and protection to sperms.
Pollination is the process in which the transfer of pollen grains takes place from anther to stigma for the purpose of fertilization in plants.
Fertilization refers to the fusion of male and female gamete.
Diagram of pistil showing formation of pollen tube
OR
1.Testis: The testes are the male reproductive organs that are located outside the abdominal cavity within a pouch called scrotum. It produces sperms and also produce a hormone called testosterone, which brings about secondary sexual characters in boys.
2.Seminal vesicles: Seminal vesicles secrete mucus and alkaline fluid that helps the sperm to swim and also neutralizes the acidic condition in vagina.
3.Vas deferens: It carries sperm from the vasa efferentia to the urethra.
4.Ureter: When blood is filtered by the kidney, the waste material (urine) is passed on to urinary bladder via the ureters. The function of ureter is to carry urine from the kidney to the urinary bladder.
5.Prostate glands: It produces an alkaline fluid (prostatic fluid), which is a constituent of the semen. The prostatic fluid provides motility, longer survival period (neutralizes the acidic environment of the female reproductive tract) and protection to sperms.
