Multiple Choice QuestionsThe important gas which was absent during the formation of Earth is
oxygen
hydrogen
nitrogen
carbon dioxide
In spermatogenesis, reduction division of chromosome occurs during conversion of
spermatogonia to primary spermatocytes
primary spermatocytes to secondary spermatocytes
secondary spermatocytes to spermatids
spermatids to sperms
The carcinoma, a type of cancer, originates from
blood
connective tissue
epithelial tissue
lymph gland
Which one of the following is not included under in situ conservation?
National park
Wild life sanctuary
Zoological garden
Biosphere reserve
C.
Zoological garden
In situ conservation is the conservation of living resources through their maintenance within the natural ecosystems, in which they occur. It includes a comprehensive system of protected areas such as national parks, wildlife sancturies, natural and biosphere reserves etc.
Zoological and Botanical gardens, aquaria, culture collections, seed banks etc., ar established for ex situ conservation.
Melting of DNA at an elevated temperature (70°C) is primarily due to the breakdown of
phosphodiester bonds
glycosidic bonds
disulphide bonds
hydrogen bonds
The usual source of restriction endonucleases used in gene cloning is from
fungi
bacteria
plants
viruses
For a clean environment, which one following is not essential?
Producer
Consumer
Decomposer
Polluter
The expanded name of MRI is
Medical Reserach Instrument
Magnetic Resonance Imaging
Magnetic Research Institute
Medical Resonance Imaging
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