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प्रश्न
Colonies of yeast fail to multiply in water, but multiply in sugar solution. Give one reason for this.
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उत्तर
An organism requires energy to perform various life processes such as nutrition, respiration, etc. so as to sustain its life and also to reproduce. Since water lacks source of energy, colonies of yeast fail to multiply in it whereas sugar solution provides source of energy, colonies of yeast multiply in it.
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संबंधित प्रश्न
Your school has been selected by the Department of Education to organize and host an interschool seminar on “Reproductive Health – Problems and Practices”. However, many parents are reluctant to permit their wards to attend it. Their argument is that the topic is “too embarrassing.” Put forth four arguments with appropriate reasons and explanation to justify the topic to be very essential and timely.
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State True/False with explanation.
Creating awareness about sex-related aspects is an effective method to improve reproductive health of the people.
What is the causative organism for the following disease?
AIDS
Name two devices used in the barrier method of birth control.
Which method of contraception prevents fertilised egg from being implanted in the uterus?
In which one of the following birth control methods, a small portion of oviducts of a woman is removed by surgical operation and the cut ends are ligated?
(a) copper-T
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(c) vasectomy
(d) diaphragm
A woman uses a device X made of a common metal for preventing pregnancy. This device works by preventing the implantation of fertilised egg cell (or embryo) in the female organ Y.
(a) What are the two names of device X?
(b) Name the organ Y.
(c) Can this method of contraception protect a woman from acquiring a STD?
List four ways of preventing pregnancy. State two advantages of using such preventive methods.
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Name the kind of diseases/disorders and any two symptoms that are likely to occur in humans if The karyotype is XXY
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Trace the path of sperm during ejaculation and mention the gland and their functions associated with the male reproductive system.
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- Fertilization of egg
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Which of the following options gives the correct order of sequence in which they occur?
It is believed that height of a child depends upon the genes inherited from parents. However, it is often seen that tall parents may have short children and vice-versa. Are there factors other than genes that can cause these variations?
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Suggest some important steps that you would recommend to be taken to improve the reproductive health standards in India.
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