Prior to a sports event blood and urine samples of sportspersons are collected for drug tests.
(a) Why there is a need to conduct such tests ?
(b) Name the drugs the authorities usually look for.
(c) Write the generic name of two plants from which these drugs are obtained.
(a) These tests are conducted to check the misuse of certain drugs that are used by sports persons to enhance their performance. This undue performance gives them a easy success. Therefore to ensure a fair play in sports drug tests have become necessary. These tests are normally called dope tests.
(b) The authorities usually look for the following drugs:
Narcotic analgescis Anabolic steroids Diuretics Cannabinoids Hormones Cocaine
(c) The plants from which these drugs are obtained are:
Cannabis sativa Erythroxylum coca Papaver somniferum
Fill in the blanks:
(a) Humans reproduce __________. (asexually/sexually)
(b) Humans are__________. (oviparous/viviparous/ovoviviparous)
(c) Fertilization is __________ in humans. (external/internal)
(d) Male and female gametes are __________. (diploid/haploid)
(e) Zygote is __________. (diploid/haploid)
(f) The process of release of the ovum from a mature follicle is called__________.
(g) Ovulation is induced by a hormone called the __________.
(h) The fusion of male and female gametes is called _____________.
(i) Fertilisation takes place in _____________.
(j) Zygote divides to form _____________which is implanted in uterus.
(k) The structure which provides vascular connection between fetus and uterus is called ____________.