31.

Due to alcohol abuse, brain-related disease Korsakkoff’s syndrome occurs. Which nutrient is responsible for this syndrome?

• Vitamin-B₁₂

• Fat

• Protein

• Vitamin-B₁

Who received Nobel Prize in 2008 for the discovery of HIV?

• Harald Zur Hausen

• Luc Montagnier

• Jack Szostak

• Carol Greider

Which one of the following is a reorganization site for restriction enzymeBam HI?

• 5ʹ– GAATTC – 3ʹ 3ʹ – CTTAAG – 5ʹ

• 5ʹ – GGATCC – 3ʹ 5ʹ – CCATGG – 3ʹ

• 5ʹ – GGATCC -– 3ʹ 3ʹ – CCTAGG – 5ʹ

• 5ʹ– GAATTC – 3ʹ 5ʹ– GTTAAC – 3

Golden ages of reptiles and fishes are respectively

• Mesozoic and Devonian

• Jurassic and Permian

• Triassic and Silurian

• Palaeozoic and Mesozoic

Match the following Columns.

• A – 3; B – 4; C – 1; D – 2

• A – 2; B – 3; C – 4; D – 1

• A – 3; B – 4; C – 2; D – 1

• A – 3; B – 1; C – 4; D – 2

‘Treponema pallidum’ pathogen is a cause of

• Leprosy

• Plague

• Syphilis

• Pertussis

Which one of the following pair is not correct?

• Mangolian idiocy – 21st chromosome

• Patau syndrome – 13th chromosome

• Cri-Du-Chat – 11th chromosome

• Edward syndrome – 18th chromosome

Which one of the following pair is not correct?

• Single-stranded DNA

• Single-stranded RNA

• Double-stranded DNA

• None of the above

An irregular mode of reproduction resulting in the development of an embryo without fertilization is called

(I) parthenogenesis

(II) apogamy

(III) sporophytic budding

Select the correct answer using the code given below.

• Only I

• Only II

• II and III

• I, II and III

Compare the statement I and II and choose the correct option.

Statement I In the flowering plants due to higher accumulation of auxins dormancy of lateral buds occurs.

Statement II In Maryland Mammoth (a tobacco variety) flowering occurred at a different time at different latitude due to gibberellins concentration.

• Statement I is true, but II is false

• Statement I is false, but II is true

• Both statements are true

• Both statements are false