261.
Cell wall was discovered by
A
Robert brown
B
Malpighi
C
Robert Hooke
D
Nageli
Answer :
Robert Hooke
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262.
Suberisation mainly occurs in
A
Middle lamella
B
Pri-cell wall
C
Sec. -cell wall
D
Cytoplasm
Answer :
Middle lamella
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263.
Which of the following character is not taken into consideration while prepaaring a karyotype
A
Chromosome length
B
Arm ratio
C
Position of sec. Constriction
D
Length of chromonemata
Answer :
Length of chromonemata
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264.
Bond between phosphate and sugar in a nucleotide is
A
H-bond
B
Covalent bond
C
Phosphodiester bond
D
Sulphide bond
Answer :
Covalent bond
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265.
Names of Schleiden and Schwann are associated with
A
protoplasm as the physical basis of life
B
cell theory
C
theory of cell lineage
D
nucleus functions as control centre of cell
Answer :
cell theory
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266.
M - RNA is attached with
A
E.R.
B
Ribosome
C
Nucleus
D
Lycsosome
Answer :
Ribosome
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267.
Which one of the following is a chain growth polymer
A
Starch
B
Nucleic acid
C
Polystyrene
D
Protein
Answer :
Polystyrene
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268.
The term protoplasm was coned by
A
Virchov
B
Purkinje
C
Dujardin
D
Kollinker
Answer :
Purkinje
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269.
Lignified cell wall is characteristic feature of
A
Vessels
B
Sieve cells
C
Sieve tubes
D
All of the above
Answer :
Vessels
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270.
The protein nucleoplasmin occus in
A
Nuclear pore complex
B
Sieve cells
C
Nucleolus
D
Heterochromatin
Answer :
Nuclear pore complex
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