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प्रश्न
How is the chromosome number maintained in sexually reproducing organisms?
उत्तर
In sexually reproducing organisms. chromosome number is maintained by process of meiosis in which chromosome number is reduced to half which is restored on fertilization.
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संबंधित प्रश्न
How do organisms, whether reproduced asexually or sexually maintain a constant chromosome number through several generations? Explain with the help of suitable example.
Explain how, in sexually reproducing organisms, the number of chromosomes in the progeny is maintained.
Name two plants which reproduce by sexual reproduction method and two plants which reproduce by asexual reproduction methods.
Define the term Puberty.
What is sexual reproduction? List its four significances.
Long answer question.
Describe female reproductive system of human.
Which of the following is the male accessory gland?
Match column -1 with column - II and select the correct option.
| Column - I | Column - II | ||
| 1. | Seminal vesicles | a. | Membranous urethra |
| 2. | Scrotum | b. | Thermoregulatory |
| 3. | Tunica vaginalis | c. | Fibro muscular pouches |
| 4. | Cowper's gland | d. | Peritoneal covering |
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