How many of the following structures are found in the primary sex organ of a male ?
(I) The network of small tubules
(II) Leydig cells
(III) Blood vessels
(IV) Seminiferous tubules

Explain the following : (i) Testes and Ovaries are considered as the primary sex organs. (ii) Advantage of seed production in plant. (iii) Vas deferens is long in human male.

Read the following statements about male reproductive system and identify the correct ones. I . The scrotum helps in maintaining the temperature ideal for spermatogenesis . II. The male germ cells present in the seminiferous tubules undergo mitotic division and lead to the formation of sperms . III . The bulbourethral glands secrete substances which help in lubricating the penis and these glands also help in formation of the ejaculatory duct. IV. The site of spermatogenesis are highly compartments of the testis .

Read the following statements about male reproductive system and identify the correct ones. I . The scrotum helps in maintaining the temperature ideal for spermatogenesis . II. The male germ cells present in the seminiferous tubules undergo mitotic division and lead to the formation of sperms . III . The bulbourethral glands secrete substances which help in lubricating the penis and these glands also help in formation of the ejaculatory duct. IV. The site of spermatogenesis are highly compartments of the testis .

Consider the following statements with respect to angiosperms. I. The male sex organ in a flower is the stamen.II. The anthers following mitosis produce pollen grains.III. In an embryo sac, the Primary Endosperm Nucleus (PEN) is diploid. IV. After double fertilisation the ovules develop into seeds and ovaries develop into fruit. Of the above statements.

Read the following statements and find out the incorrect statements. a. Each testicular lobule contains one to three highly coiled seminiferous tubules in which sperm are produced b. Each seminiferous tubule is lined on its inside by two types of cells called Leydig cells and Sertoli cells. c. The region outside the seminiferous tubules called interstitial space, contain small blood vessels and male germ cells (spermatogonia) which lead to sperm formation. d. In testis immunologically component cells are also present. e. The seminiferous tubules of the testis open into the rete testis through vasa efferentia.

Read the following statements and find out the incorrect statements. a. Each testicular lobule contains one to three highly coiled seminiferous tubules in which sperm are produced. b. Each seminiferous tubule is lined on its inside by two types of cells called Leydig cells and Sertoli cells. c. The region outside the seminiferous tubules called interstitial space, contain small blood vessels and male germ cells (spermatogonia) which lead to sperm formation. d. In testis immunologically component cells are also present. e. The seminiferous tubules of the testis open into the rete testis through vasa efferentia.

Which of the following statement is not correct? (i) Interstitial cells are seen surrounding the seminiferous tubule. (ii) Nurse cells secrete inhibin. (iii) Males have single prostate gland which encircles the urethra. (iv) Insemination, Fertilization, Implantation, Placentation and Parturition.

Consider the following statements each with two blanks. (A) Seminiferous tubules produce overset((i))"_____" while Leydig's cells produce overset((ii))"_____" . (B) In females, urethra is small and conducts overset((iii))"_____" while in males it conducts urine and overset((vi))"_____" . (C) The process of formation of spermatozoa form spermatogonia is called overset((v))"_____" and the process of maturation of spermatids into spermatozoa is called overset((vi))"_____" . Which one of the following options, gives the correct fill ups for the respective blanks numbers from (i) to (vi) in the statements?

Consider the following statements each with two blanks. (A) Seminiferous tubules produce overset((i))"_____" while Leydig's cells produce overset((ii))"_____" . (B) In females, urethra is small and conducts overset((iii))"_____" while in males it conducts urine and overset((vi))"_____" . (C) The process of formation of spermatozoa form spermatogonia is called overset((v))"_____" and the process of maturation of spermatids into spermatozoa is called overset((vi))"_____" . Which one of the following options, gives the correct fill ups for the respective blanks numbers from (i) to (vi) in the statements?