The objective of 'Ramsar Convention' was

• forest conservation

• wildlife conservation

• wetland conservation

• biodiversity conservation

Which of the following human parasites require mosquito to complete their life-cycle?

• Ascaris tumbricoides and Wuchereria bancrofti

• Leishmania donovani and Plasmodium ovale

• Ascaris lumbricoides and Leishmania donovani

• Wuchereria bancrofti and Plasmodium ovale

In which diagnostic system, piezoelectric effect and reverse piezoelectric effect are involved?

• EEG

• CAT

• USG

• MRI

Main cause of eutrophication is

• fluctuation of temperature

• unusual growth of aquatic vegetations

• enrichment of nutrients

• abundance of microorganisms

The removal of 'Keystone' species will affect the

• producers

• consumers

• ecosystem

• decomposers

If the sequence of bases in the coding strand of a double-stranded DNA is 5'-GTTCGAGTC-3', the sequence of bases in its transcript will be

• 5'-GACUCGAAC-3'

• 5'-CAAGCUCAG-3'

• 5'-GUUCGAGUC-3'

• 5'-CUGAGCUUG-3'

Immunity that develops in the foetus after receiving antibodies from mother's blood through placenta is

• naturally acquired active immunity

• artificially acquired active immunity

• naturally acquired passive immunity

• artificially acquired passive immunity

Which of the following processes was discovered by Lederberg and Tatum (1946)?

• Transduction

• Transformation

• Asexual reproduction

• Conjugation

69.

The component of bacteria that retains the crystal violet stain during Gram staining is

• O- antigen

• lipopolysaccharide

• peptidoglycan

• cytoplasmic membrane

During gene cloning, the enzyme used to join the insert DNA with the plasmid vector is

• DNA ligase

• restriction endonuclease

• alkaline phosphatase

• exonuclease