(a) nutrition. (b) respiration. (c) excretion. (d) transportation.
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During deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in the
(a) cytoplasm
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Describe the flow of blood through the heart of human beings.
Hints— Atrium Ventricles Oxygenated blood De-oxygenated blood
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Which of the following is not a part of the female reproductive system in human beings?
(c) Vas deferens is not a part of the female reproductive system in human beings.
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What are the functions performed by the testis in human beings?
The testes are the male reproductive organs that are located outside the abdominal cavity within a pouch called scrotum. Functions of testes: Produce sperms Produce a hormone called testosterone, which brings...
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In human beings, the statistical probability of getting either a male or female child is 50 : 50. Give a suitable explanation.
The sex of an infant is determined by the type of sex chromosome contributed by the male gamete. Since the ratio of male gametes containing X chromosome and those containing...
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Bacteria have a simpler body plan when compared with human beings.
This is a debatable issue. If appearance of complexity is concurrent with evolution then, human beings are certainly more evolved than bacteria. But if we take the totality of life...
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how are the lungs designed in human beings to maximise the area for exchange of gases
Respiration in human beings takes place through a special system called as respiratory system.This involves nostrils, nasal cavity, larynx, bronchi, bronchioles ending in alveoli inside the lungs. Lungs are designed...
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Nervous and hormonal system together perform the function of control and coordination in human beings. Justify the statement.
Nervous and hormonal system together perform the function of control and coordination in human beings. Let us take an example, in the case of any emergency, stimulus is being perceived by CNS...
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Match the organisms given in Column I with their part/product in Column II that is used by human beings as food.
a-(iii), b-(i), c-(iv), d-(v), e-(ii)
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Name the main thinking part of the human brain. List four major functions (other than thinking) of this part.
Fore brain is the main thinking part of the brain. Four other major function of forebrain are: (i) Hearing, smell, sight (ii) Storing information (iii) Movement of voluntary muscles (iv) Sensation of either feeling full...
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