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प्रश्न
Humans reproduce ______.
विकल्प
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
find odd one from following: Thymine, Cytosine, Adenine, Pepsin.
Differentiate between Rod cells and cone cells (pigment)
Which part of the human body produces Sperms?
Describe the functions of the following:
Prostate gland
Describe the functions of the following:
ovary
Define the following term:
Hernia
Mention the exact location of the following :
Testis
Given on the right is a diagram which represents the reproductive organs of a man:
(i) Write the names of the parts numbered 1 to 16.
(ii) Give two functions of the part 6.
(iii) Name three components of the fluid which may be found in the tube labeled 2.
(iv) What is the main function of the part labelled 3?
What differences are there in number, structure, and activity of the male and female gametes in a man?
Differentiate
Urinogenital duct and Ureter.
Given below is a diagram of the lateral section of the testis of a man. Study the same and answer the questions that follow:
(i) Label the parts numbered 1 to 4 of the diagram.
(ii) State the functions of the parts labeled 1 and 3.
(iii)What is the significance of the testes being located in the scrotal sac outside the abdomen?
(vi)What is the role played by the inguinal canal?
(v) What is semen?
Explain the Term Penis.
Name the Following
The hormone that stimulates the development of secondary sexual characters in males.
Complete the following sentences with appropriate word:
The surgical sterilization of males is known as _________.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Tubectomy involves the cutting and tying of the vas deferens in males.
Draw a neat and labelled diagram.
Human male reproductive organs
Identify the number of spermatids produced from 1 secondary spermatocyte.
Semen is secreted by ______.
How many spermatozoa will be produced from 10 million spermatids?
Seminal plasma in humans is rich in ______.
Match between the following representing parts of the sperm and their functions and choose the correct option.
| Column A | Column B | ||
| A. | Head | i. | Enzymes |
| B. | Middle piece | ii. | Sperm motility |
| C. | Acrosome | iii. | Energy |
| D. | Tail | iv. | Genetic material |
In human males, the testes lie in the scrotum, because it helps in the
Why do only male gametes have a tail?
Small sac-like muscular structures that enclose testes.
What are the components of semen?
Explain the function of the following structure in the human male reproductive system.
Scrotum
Explain the function of the following structure in the human male reproductive system.
Male accessory glands
List two roles of Seminal vesicles and prostate gland in the human reproductive system.
Answer the following question based on the human male reproductive system:
What is the length of a sperm?
