21.
In Amoeba who gave contraction hydraulic theory A
Swan
B
Clude
C
Schultze
D
Simpson
Answer :
Schultze
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22.
Influenza is caused by A
Bacillus haemophilus influenza
B
Pox virus
C
Myxo virus
D
Pneumanococcus
Answer :
Myxo virus
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23.
The structures that help some bacteria to attach to rocks and / or host tissues are: A
Fimbriae
B
Mesosomes
C
Holdfast
D
Rhizoids
Answer :
Fimbriae
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Fimbriae assist some bacteria in attaching to rocks or host body for obtaining establishment and nutrition.Notes : A holdfast is a root-like structure that anchors aquatic sessile organisms, such as seaweed, other sessile algae, stalked crinoids, benthic cnidarians, and sponges, to the substrate.
24.
The rabies virus contain A
S.S. RNA
B
D.S. RNA
C
S.S. DNA
D
D.S. DNA
Answer :
S.S. RNA
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25.
"Transformation" experiments usuing pneumococus bacteria led to hypothesis that A
DNA is genetic material
B
Bacteria have sexual reproduction
C
Chromo somes are made up of DNA
D
RNA is a transfer link
Answer :
DNA is genetic material
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26.
Who is regarded as father of taxonomy A
Takhtajan
B
Bentham and Hooker
C
Linneaeus
D
Aristotle
Answer :
Linneaeus
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27.
Sexual reproduction in Algubo is A
Isogamous
B
Anisogamous
C
Oogamous
D
None of the above
Answer :
Oogamous
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28.
Cauliflower mosaic virus contains A
ss RNA
B
ds RNA
C
ds DNA
D
ss DNA
Answer :
ds DNA
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29.
Tobacco mosaic virus is a tubular filament of size A
$$700 \times 30\,nm$$
B
$$300 \times 10\,nm$$
C
$$300 \times 5\,nm$$
D
$$300 \times 20\,nm$$
Answer :
$$300 \times 20\,nm$$
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30.
Photosynthetic protists are mainly A
Multicellular prokaryotic, photosynthetic
B
Unicellular, prokaryotic, Photosynthetic
C
Unicellular, eukaryotic, photosynthetic
D
Multicellular eukaryotic, photosynthetic
Answer :
Unicellular, eukaryotic, photosynthetic
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