Answer:
1. Answer : (b) Population crash
Explanation: This rapid decline in population due to the high mortality rate is a Population crash.
2. Answer : (c) Determine any hereditary disease in the embryo
Explanation: Amniocentesis is a prenatal testing procedure usually performed during the second or third trimester of pregnancy. During amniocentesis, your provider uses a thin needle to remove a small amount of amniotic fluid from the sac surrounding your unborn baby. This fluid sample then gets tested in a laboratory.
3. Answer : (c) Abstinence
Explanation: Abstinence. Abstinence is the only birth control that is 100 percent effective and is also the best way to protect you against STDs.
4. Answer : (c) Saheli
Explanation: Saheli was developed by CDRI. Oral contraceptive pills are an effective way of birth control. Saheli is the world's first oral non-steroidal contraceptive pill with zero side effects.
5. Answer : (b) AIDS
Explanation: The retrovirus known as human immunodeficiency virus (HIV) causes acquired immunodeficiency syndrome (AIDS) in humans.
6. Answer : (a) Castration
Explanation: The process of removal of testes through the surgical procedure or process is known as castration.
7. Answer : (a) Prevents ovulation
Explanation: The progestin in the pills has several effects in the body that help prevent pregnancy: The mucus in the cervix thickens, making it difficult for sperm to enter the uterus and fertilize an egg. Progestin stops ovulation, but it does not do so consistently.
8. Answer : (b) India
Explanation: India was amongst the first countries in the world to initiate action plans and programs at a national level to attain total reproductive health as a social goal. These programmes called 'family planning' were initiated in 1951 and were periodically assessed over the past decades.
9. Answer : (d) Reproductive and Child Health Care
Explanation: The Reproductive and Child Health (RCH) Programme which was launched on 15th October 1997 incorporated two earlier programs i.e, National family welfare (NFW) program and the Child survival & Safe Motherhood (CSSM) program.
10. Answer : (a) ICSI
Explanation: Intracytoplasmic sperm injection is an in vitro fertilization (IVF) procedure. In this procedure, a single sperm cell is injected directly into the cytoplasm of an egg.
11. Answer : (a) IVF
Explanation: But, if the tubes are severely damaged, doctors recommend IVF which will help women conceive naturally. “Most women who are diagnosed with tubal factor infertility come to us after they reach a critical stage and this calls for IVF treatment.
12. Answer : (a) LNG 20
Explanation: LNG-20 is a hormone-releasing IUD and Lippes loop is a non-medicated IUD.
13. Answer : (a) Implantation
Explanation: This blastocyst adheres (attaches) to the uterine wall (endometrium) for receiving oxygen and nutrients from the mother. This attachment of the blastocyst to the endometrium is called implantation.
14. Answer : (a) Vasectomy
Explanation: In a vasectomy, the vas deferens tubes are tied, cut, clipped, or sealed to prevent the release of sperm into the semen. This prevents a woman's egg from being fertilized with the man's sperm.
15. Answer : (b) smaller populations
Explanation: Genetic drift is a mechanism of evolution in which allele frequencies of a population change over generations due to chance (sampling error). Genetic drift occurs in all populations of non-infinite size, but its effects are strongest in small populations.
16. Answer : (a) progesteron
Explanation: Most birth control pills are "combination pills" containing a mix of the hormones estrogen and progesterone to prevent ovulation (the release of an egg during the monthly cycle). A woman cannot get pregnant if she doesn't ovulate because there is no egg to be fertilized.
17. Answer : (a) biotic potential
Explanation: The physiological capacity of the organisms to produce their offspring under natural conditions is called biotic potential. It is also known as reproductive potential. In the population, unrestricted reproductive capacity is called biotic potential.
18. Answer : (b) population
Explanation: Geometric representation of age structure is a characteristic of a population. In most populations, individuals are of different ages. The proportion of individual in each age group is called age structure of that population. Geometric representation of age structure is a characteristic of a population.
19. Answer : (c) Vasectomy
Explanation: In a vasectomy, the vas deferens tubes are tied, cut, clipped, or sealed to prevent the release of sperm into the semen. This prevents a woman's egg from being fertilized with the man's sperm.
20. Answer : (a) Mast cell
Explanation: Histamine is synthesized in all tissues, but is particularly abundant in the skin, lung and gastrointestinal tract. Mast cells, which are present in many tissues, are a prominent source of histamine, but histamine is also secreted by a number of other immune cells.
21.Answer : (a) GIFT
Explanation: Gamete Intrafallopian transfer is a method used for women that cannot produce an ovum however can give an appropriate surrounding for the fetus to grow. In such situations, the ovum from the donor woman is transplanted into the fallopian tube of the women
22. Answer : (c) suppress sperm motility
Explanation: IUDs increase phagocytosis of sperms within the uterus and the Cu ions released suppress sperm motility and the fertilizing capacity of sperms. The hormone-releasing IUDs, in addition, make the uterus unsuitably for implantation and the cervix hostile to the sperms.
23. Answer : (b) Consap
Explanation: Central drug research institute, Lucknow, India has developed spermicidal cream called Consap. It has the capability of killing the sperm released during insemination.
24. Answer : (a) Assisted Reproductive Technologies
Explanation: Assisted reproductive technology (ART) includes medical procedures used primarily to address infertility. This subject involves procedures such as in vitro fertilization (IVF), intracytoplasmic sperm injection (ICSI), cryopreservation of gametes or embryos, and/or the use of fertility medication.
25. Answer : (c) Fallopian tube or uterus
Explanation: In E.T techniques, embryos are always transferred into the uterus. The Embryo Transfer technique is used very increasingly nowadays for infertile couples. In this type of technique, male and female gametes are fused outside the mother's body.
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