Biology MCQs

11. Water hyacinth is related to which of the following genus?
[A] Lemna
[B] Pistia
[C] Eichhornia
[D] None of these

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12. When compared to the mammals, birds are less sensitive to temporary deprivation of water, because?
[A] The water requirement per unit weight is less in birds than in mammals.
[B] Absorption of water from the gut is more efficient in birds than in mammals.
[C] Urea excretion in mammals entails a greater loss of water than that in birds.
[D] None of these

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13. What does the stones formed in human kidney consist of?
[A] calcium oxalate
[B] sodium acetate
[C] magnesium sulphate
[D] calcium

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14. Which one of the following statements is not correct?
[A] Milk contains none of the B-vitamins
[B] Vitamin-A (retinal) deficiency leads to dry and scaly skin
[C] One of the symptoms of scurvy is pain in the joints
[D] Vitamin B1 (thiamine) deficiency can lead to heart failure

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15. Which among the following branches of science deals with the scientific study of interaction of soils with vegetative matter?
[A] Pedology
[B] Petrology
[C] Hydrology
[D] Edaphology

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16. Who is known as the ‘God of plants’?
[A] Soma
[B] Varuna
[C] Rudra
[D] Indra

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17. The science of histology is related to which of the following studies?
[A] Tissues
[B] Cells
[C] Algae
[D] Fungi

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18. Who among the following is considered to be the father of neuroscience?
[A] Santiago Ramón y Cajal
[B] James Black
[C] Erwin Chargaff
[D] Jacques Cousteau

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19. Who was awarded the Nobel Prize in Medicine for the discovery of Human Immunodeficiency Virus?
[A] Françoise Barré-Sinoussi
[B] Luc Montagnier
[C] Both 1 & 2
[D] None of these

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20. In which of the following hemocaelic body cavity is found?
[A] Cockroach
[B] Lizard
[C] Mosquito
[D] Honeybee

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