Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

61.

Consider the following four measure (A-D) that could be taken to successfully grow chickpea in an area where bacterial blight disease is common

A) spray with Bordeaux mixture

B) control of the insect vector of the disease pathogen

C) Use of only disease-free seeds

D) Use of varieties resistant to the disease

Which two fo the above measures can control the disease?

  • B and C

  • A and B

  • C and D

  • C and D

501 Views

62.

About 70% of total global carbon is found in 

  • grasslands

  • agro -ecosystem

  • Oceans

  • Oceans

447 Views

63.

Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?

  • Chorion

  • Allantois

  • Yolk sac

  • Yolk sac

447 Views

64.

Unisexuality of flowers prevents

  • autogamy, but not geitonogamy

  • Both geitonogamy and xenogamy

  • geitonogamy, but not xenogamy

  • geitonogamy, but not xenogamy

556 Views

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65.

Which one of the following pairs of codons is correctly matched with their function or the signal for the particular amino acid?

  • GUU, GCU - Alanine

  • UAG, UGA - stop

  • AUG, ACG - start/ methionine

  • AUG, ACG - start/ methionine

331 Views

66.

Which one of the following pairs of organs includes only the endocrine glands?

  • Parathyroid and adrenal 

  • Pancreas and parathyroid

  • Thymus and testes

  • Thymus and testes

330 Views

67.

Modern detergents contain enzyme preparations of 

  • acidophiles 

  • alkaliphiles

  • thermoacidophiles 

  • thermoacidophiles 

401 Views

68.

According to central pollution control Board (CPCB), which particulate size in diameter (n micrometres) of the air pollutants is responsible for greatest harm to human health?

  • 2.5 or less

  • 1.5 or less

  • 1.0 or less 

  • 1.0 or less 

317 Views

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69.

Which one of the following is the correct statement regarding the particular psychotropic drug specified

  • Hashish cause alter thought perceptions and hallucinations

  • Opium stimulates nervous system and cause hallucinations

  • Morphine leds to delusions and disturbed emotions

  • Morphine leds to delusions and disturbed emotions


A.

Hashish cause alter thought perceptions and hallucinations

Charas is the dried resinous extract from the flowering tops and leaves of Cannabis Sativa. In some countries, it is called hashish. It is an hallucinogen, which alters a person's thought, feeling and perceptions.

Psychotropic drugs (mood altering drugs) act on the brain and alter the behaviour, consciousness and power of perception. Barbiturates (derivative of barbituric acid) are general depressants for all excitable cells but the CNS is most sensitive to these drugs.

Opium is obtained from unripe seed pots of poppy plant (Papaver somniferum). Optimum has an analgesic (pain killing) effect and may also reduce anxiety and tension and lowers the blood pressure and breathing rate. 

Morphine ( a dream inducing derivative of opium) dream-inducing properties.

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70.

Bacterial leaf blight of rice is caused by a species of 

  • Xanthomonas

  • Pseudomonas

  • Alternaria

  • Alternaria

286 Views

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