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The kidneys in human beings are a part of the system for
(c) In human beings, the kidneys are a part of the system for excretion.
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Single circulation i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by
(b) Hippocampus, Exocoetus, Anabas
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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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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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A man with blood group A marries a woman with blood group O and their daughter has blood group O.
No. This information is not sufficient to determine which of the traits − blood group A or O − is dominant. This is because we do not know about the...
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Describe the process of fertilization in human beings.
Fertilization involves the fusion of the male and the female gamete. The male and the female gametes are released from the male and the female reproductive organs. Sperms or male...
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What is the special feature present in a human heart which does not allow mixing of blood
Heart is partitioned into four chambers
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Match the parts of the heart in Column I with the direction of flow of blood in Column II.
(i) (a); (ii) (d); (iii) (f); (iv) (b); (v) (e); (vi) (c)
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