491.
Which part of the plant is not infected by Albugo
A
Stem
B
Root
C
Leaf
D
Flowers
Answer :
Root
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492.
Which of the following statements is incorrect?
A
Morels and truffles are edible delicacies
B
Claviceps is a source of many alkaloids and LSD
C
Conidia are produced exogenously and ascospores endogenously
D
Yeasts have filamentous bodies with long thread-like hyphae
Answer :
Yeasts have filamentous bodies with long thread-like hyphae
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Yeast is an unicellular sac fungi. It lacks filamentous structure or hyphae.
493.
Entamoeba is a
A
Monopodial
B
Dipodial
C
Multipodial
D
None of the above
Answer :
Monopodial
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494.
The forcible intake of material against osmotic gradient in Amoeba is called
A
Pinocytosis
B
Circumvallation
C
Circumfluence
D
Hepatic vein
Answer :
Hepatic vein
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495.
The literal meaning of virus is a
A
Poison
B
Venome
C
Secretion
D
All of the above
Answer :
All of the above
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496.
Mucor shows
A
Isogamy
B
Anisogamy
C
Oogamy
D
None of the above
Answer :
Isogamy
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497.
Phylogenetic classification is based on
A
utilitarian system
B
habits
C
overall similarities
D
common evolutionary descent
Answer :
common evolutionary descent
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The first phylogenetic system of classification was proposed by Adolf Engler and his associate Karl Prantl in their monograph “Die Naturlichen Pflanzen Familien”. In this system of classification, organisms are classified on the basis of evolutionary sequence and genetic relationship among the organisms. Hence, this system is highly dynamic not static.
Note : Fossil records play a vital role in elucidation of evolutionary relationships. This system has led to new systematics.
498.
Which one of the following statements about viruses is correct ?
A
Nucleic acid of viruses is known as capsid
B
Viruses possess their own metabolic system
C
All viruses contain both RNA and DNA
D
Viruses are obligate parasites
Answer :
Viruses are obligate parasites
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499.
Mycoplasma like mollicutes which do not require sterols in culture medium are called
A
PPLO
B
MLO
C
Acholeplasma
D
Spirochaetes
Answer :
Acholeplasma
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500.
The converstion of plasmagel into plasmasol and vice versa in Amoeba was first studied by
A
Pantin
B
Hymen
C
Mast
D
Taylor
Answer :
Hymen
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