BIOLOGICAL CLASSIFICATION-NEET Practice Questions

 

            BIOLOGICAL CLASSIFICATION

 66. Plasmogamy is fusion of:

A) Two haploid cells including their nuclei

B) Two haploid cells without nuclear fusion

C) Sperm and egg

D) Sperm and two polar nuclei

Correct Answer: B

67.  When fungi feed on dead organic matter, they are known as:

A) Dimorphic                     

B) Parasites

C) Saprophytes                  

D) None of these

Correct Answer: C

68. Ergot is caused by:

A) Claviceps          

B) Penicillium

C) Aspergillus                     

D) Rhizobium

Correct Answer: A

69. Koch's postulates are related to:

A) Cell structure of bacteria

B) Cell structure of micro-organisms

C) Laws of diseases

D) Origin of micro-organisms 

Correct Answer: C

70. All eukaryotic unicellular organisms belong to
 (A) Monera
 (B) Protista
 (C) Fungi
 (D) Bacteria
Correct Answer: (B) Monera—Kingdom of prokaryotes
71. Organisms living in salty areas are called as
 (A) Methanogens
 (B) Halophiles
(C) Heliophytes 
(D) Thermoacidophiles
Correct Answer: (B)
72. Naked cytoplasm, multinucleated and saprophytic are the characteristics of
(A) Monerans 
(B) Protists 
(C) Fungi 
(D) Slime moulds
Correct Answer: D
73. An association between roots of higher plants and fungi is called .
 (A) Lichen
 (B) Fern
 (C) Mycorrhiza 
 (D) BGA
Correct Answer: C
74. A dikaryon is formed when
(A) Meiosis is arrested
(B) The two haploid cells do not fuse immediately
(C) Cytoplasm does not fuse
(D) None of the above
Correct Answer: B
75.Contagium vivum fluidum was proposed by
(A) D. J. Ivanowsky 
(B) M. W. Beijerinck
(C) Stanley 
(D) Robert Hooke
Correct Answer: B
76. Association between mycobiont and phycobiont are found in
(A) Mycorrhiza 
(B) Root 
(C) Lichens 
(D) BGA
Correct Answer:C
77.  Difference between virus and viroid is
(A) Absence of protein coat in viroid but present in virus
(B) Presence of low molecular weight RNA in virus but absent in viroid
(C) Both (a) and (b)
(D) None of the above
Correct Answer: A
78. Mycobiont and Phycobiont are found in
(A) Mycorrhiza
(B)  Root
(C) Lichens
(D) BGA
Correct Answer:C

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