Multiple Choice QuestionsConsider 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
Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?
Chorion
Allantois
Yolk sac
Yolk sac
Unisexuality of flowers prevents
autogamy, but not geitonogamy
Both geitonogamy and xenogamy
geitonogamy, but not xenogamy
geitonogamy, but not xenogamy
A.
autogamy, but not geitonogamy
The transfer of pollen from the anther to stigma is called pollination. Autogamy also called self-pollination involves the transfer of pollen grains on one flower to the stigma of the same flower. Self-pollination occurs only in bisexual or hermaphrodite flowers.
Geitonogamy involves the transfer of pollen grains from a male flower to the stigma of the female flower of the same plant. Thus, geitonogamy operates only in monoecious plants ie, the plants having male and female flowers on different places.
Allogamy or xenogamy knew as cross-pollination involves the transfer of pollen grains of the male flower to the stigma of the gentically different female flower. It takes place via, various agencies like wind, water, insects etc.
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
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
Modern detergents contain enzyme preparations of
acidophiles
alkaliphiles
thermoacidophiles
thermoacidophiles
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
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
Bacterial leaf blight of rice is caused by a species of
Xanthomonas
Pseudomonas
Alternaria
Alternaria
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