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प्रश्न
Humans reproduce ______.
पर्याय
asexually
sexually
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उत्तर
Humans reproduce sexually.
Explanation:
Humans are sexually reproducing and viviparous. The reproductive events in humans include the formation of gametes (gametogenesis), i.e., sperm in males and ovum in females; the transfer of sperm into the female genital tract (insemination); and the fusion of male and female gametes (fertilisation), leading to the formation of a zygote.
APPEARS IN
संबंधित प्रश्न
Write the location and function of the Sertoli cells in humans.
The exact location of the seminal vesicle
Put a tick mark (✓) against the correct alternative in the following statement:
Identify the stage which is formed after the fertilisation of the egg by the sperm?
List the structures, in their correct sequence, through which the sperms must pass from the time they are produced in the testes to the time they leave the urethra.
Describe the functions of the following:
Testis
Sketch the labeled diagram:
Human male reproductive system
Define the following:
Dioceious
Name the Following
Male copulatory organ.
Give Technical Term:
In which organ of the male reproductive system maturation of sperms takes place?
Find an odd one out.
Write the functions of penis
The increased level of estrogen and progesterone is responsible for menstruation.
The given diagram represents T. S of
Identify the primary sex organs in males.
Identify the INCORRECTLY labelled structure in the given diagram of the male reproductive system.
Which of the following is a transporting tube leading from the bladder to which brings urine outside the body via penis?
The vas deferens receives duct from the seminal vesicle and opens into urethra as ______.
Occurrence of Leydig’s cells and their secretion is ______.
Seminal plasma in humans is rich in ______.
Which one of the following is not a male accessory gland?
Seminal plasma, the fluid part of semen, is contributed by.
- Seminal vesicle
- Prostate
- Urethra
- Bulbourethral gland
In human males, the testes lie in the scrotum, because it helps in the ______
Mature sperms in humans are stored in ______.
Cell at the end of first meiotic division male sperm differentiates into ______.
Explain the function of the following structure in the human male reproductive system.
Leydig cells
Assertion (A): Testes in human males are located outside the abdominal cavity in scrotum.
Reason (R): Scrotum provides a lower temperature than the normal body temperature for sperm formation.
Match the items given in Column I with the most appropriate ones in Column II and rewrite the correct matching pairs:
| Column I | Column II | ||
| (a) | Leydig Cells | 1. | Lack of thyroxine in children |
| (b) | Stoma | 2. | 12 pairs |
| (c) | Ova | 3. | Testosterone |
| (d) | Cranial nerve | 4. | Diffusion of respiratory gases |
| (e) | Cretinism | 5. | Haploid cells |
| 6. | 31 Pairs | ||
| 7. | Diploid cells |
What is the significance of Testes being placed in Scrotal sacs?
The figure given ahead is an organ system of humans. Study the same and answer the following questions.
 |
- Identify the organ system.
- Label the guidelines 1 to 7.
- Write one important role of parts 3 and 6.
- Name the cells of part 1 that produce testosterone.
- What is the significance of the part 1 being located in a separate sac suspended outside the body?
Given below is the outline of the male reproductive system. Name the parts labelled 1 to 8. Also name the corresponding structure of part (4) in female reproductive system.
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