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प्रश्न
Reproduction is linked to stability of population of a species. Justify the statement.
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उत्तर
During reproduction, DNA is passed from one generation to another so DNA is copied with consistency but with minor variations. This helps the maintenance of body design features that allow the organism to use a particular niche where it lives. Reproduction is therefore, linked to the stability of populations of species.
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संबंधित प्रश्न
Do you think that reproductive health in our country has improved in the past 50 years? If yes, mention some such areas of improvement.
Define amniocentesis.
Name the kind of diseases/disorders and any two symptoms that are likely to occur in humans if The karyotype is XXY
Draw a well labelled diagram of L.S. human testis.
Which one amongst the following is the first country in the world to initiate action plans and programmes at a national level to attain total reproductive health as social goal?
The family planning programmes in India were initiated in ______.
A dark stained body present in the somatic cells of human female but absent from those of male is ______.
Why does bread mould grow profusely on a moist slice of bread rather than on a dry slice of bread?
In tobacco plant, the male gametes have twenty four chromosomes.
What is the number of chromosomes in the female gamete?
What is the number of chromosomes in the zygote?
Trace the path of sperm during ejaculation and mention the gland and their functions associated with the male reproductive system.
What would be the ratio of chromosome number between an egg and its zygote? How is the sperm genetically different from the egg?
Observe the chart and graph given in the figure carefully and answer the following questions.
| Age in Years |
% of full height | |
| Boys | Girls | |
| 8 | 72% | 77% |
| 9 | 75% | 81% |
| 10 | 78% | 84% |
| 11 | 81% | 88% |
| 12 | 84% | 91% |
| 13 | 88% | 95% |
| 14 | 92% | 98% |
| 15 | 95% | 99% |
| 16 | 98% | 99.5% |
| 17 | 99% | 100% |
| 18 | 100% | 100% |
- Which of the line represents the height of boys?
- Which line represents the height of girls?
- What is the difference between the pattern of increase in the height of boys and girls?
- Is this pattern true for each individual?
What is the full form of RCH?
State one drawback of the following:
Oral contraceptive pills
State one drawback of the following:
Copper - T
What is the exact action of birth control pills?
Which of the following complete sets of aspects defines reproductive health?
What are the statutory minimum ages for marriage strictly enforced for females and males, respectively?
Which of the following groups of techniques is made available at Assisted Reproductive Technology (ART) centres for addressing infertility?
