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Biology - Questions and AnswersPage 144

1431.

Streptomycin is produced by
(a)Fungi
(b)Bacteria
(c)Yeasts
(d)Virus
Comment
Answer is: A

1432.

One of the following is called the vascular cryptogams
(a)Thallophyta
(b)Bryophyta
(c)Pteridophyta
(d)None of these
Comment
Answer is: C

1433.

Disease causing bacteria are called
(a)Toxin
(b)Saprophytic
(c)Pathogenic
(d)Autotrophic
Comment
Answer is: C

1434.

Ergot is obtained from
(a)Claviceps purpurea
(b)Colletotrichum falcatum
(c)Aspergillus niger
(d)Phytopthora infestans
Comment
Answer is: A

1435.

After development ovule forms
(a)Embryo
(b)Endosperm
(c)Seed
(d)Fruit
Comment
Answer is: C

1436.

Which of the following can be recycled ?
(a)Coal
(b)Natural oil
(c)Natural gas
(d)Metal
Comment
Answer is: D

1437.

The mechanism of heredity was explained first by
(a)Mendel
(b)Morgan
(c)Bateson
(d)Punnet
Comment
Answer is: A

1438.

Viruses are inert
(a)Outside host cell
(b)Inside host cell
(c)Both of these
(d)None of these
Comment
Answer is: A

1439.

Which of the following characteristics of virus, best denote its unique nature ?
I. It can attack bacteria
II. It can be crystallised
III. It can be replicate
IV. It can invade human body
Of the following four which one is correct?
(a)I, II and IV
(b)II and III
(c)I, III and IV
(d)III and IV
Comment
Answer is: A

1440.

Which of the following disease is / are likely to spread in the entire community if a leaky septic tank contaminates the water supply ?
I. Cholera
II.Typhoid
III. Tuberculosis
IV. Leprosy Of the following four
Which one is correct?
(a)I alone
(b)I and II
(c)I, II and Ill
(d)II, III and IV
Comment
Answer is: B

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