Multiple Choice Questions

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Toxic agents present in food which interfere with thyroxine synthesis lead to the development of 

  • toxic goitre

  • cretinism 

  • simple goitre

  • simple goitre


C.

simple goitre

toxic agents in food which interfere with thyroxine synthesis will lead to simple goitre thyrotoxicosis and toxic goitre is under the category of hyperthyroidism.

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If for some reason our goblet cells are non -functional, this will adversely effect

  • Production of somatostatin

  • secretion of sebum from the sebaceous glands

  • maturation of sperms

  • maturation of sperms

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The plasma membrane consist mainly of 

  • phospholipids embedded in a protein bilayer

  • Proteins embedded in a phospholipid bilayer

  • proteins embedded in a polymer of glucose molecules

  • proteins embedded in a polymer of glucose molecules

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The energy -releasing metabolic process in which substrate is oxidised without an external electron acceptor is called

  • glycolysis

  • fermentation

  • aerobic respiration

  • aerobic respiration

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Carrier ions like Na+ facilitate the absorption of substance like

  • amino acids and glucose

  • glucose and fatty acids

  • fatty acids and glycerol

  • fatty acids and glycerol

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Which one of the following statements about certainly given animals is correct?

  • Roundworms (Aschelminthes) are pseudocoelomates

  • Molluscs are acoelomates

  • insects are pseudocoelomates

  • insects are pseudocoelomates

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Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct?

  • Penguin is homoiothermic while the remaining three are poikilothermic 

  • Leech is a fresh water from while all other are marine

  • Spongilla has special collared cells called choanocytes, not found in the remaining three

  • Spongilla has special collared cells called choanocytes, not found in the remaining three

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Which one of the following kinds of animals are tribalistic?

  • Flatworms

  • Sponges

  • Ctenophores

  • Ctenophores

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Which one of the following is not a lateral meristem?

  • Intrafascicular cambium

  • interfascicular cambium

  • Phellogen

  • Phellogen

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The scutellum observed in a grain of Wheat or maize is comparable to which part of the seed in other monocotyledons?

  • Cotyledon

  • Endosperm

  • Aleurone layer

  • Aleurone layer

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