Roots of a plant show_____.

1. 1. Positive geotropism of stem and roots
   2. Negative tactic movement and positive tropic movement
   3. Negative phototropism and positive geotropism
   4. Positive phototropism and negative geotropism

The first action spectrum was obtained by_____.

1. 1. T.W. Inws
   2. T.W. Englemam
   3. W. Stapes
   4. Malleus

Viruses are _____ times smaller than bacteria.

1. 1. 10 – 100
   2. 10 – 1000
   3. 100 – 1000
   4. 1000 – 10000

Molecular formula of chlorophyll b is_____.

1. 1. C55 H71 O6 N4 Mg
   2. C55 H70 O6 N4 Mg
   3. C55 H10 O4 N6 Mg
   4. C55 H70 O6 N5 Mg

Plasmids are used as cloning vectors for which of the following reasons?

1. 1. Can be multiplied in laboratories with the help of enzymes
   2. Can be multiplied in culture
   3. Self-replication in bacterial cells
   4. Replicate freely outside bacterial cells

C6H12O6 + 6O2 ? 6CO2 + 6H20 + ENERGY represents _____.

1. 1. Respiration
   2. Aerobic respiration
   3. Anaerobic respiration
   4. Photosynthesis

Which of the following statement about filicinae a group of tracheophytes is incorrect?

1. 1. They are seedless and their leaves are called fronds
   2. They belong to sphenopsida
   3. They show circinate vernation
   4. They live in shady and moist areas

Which type of the receptors are present in the ear_____.

1. 1. Photoreceptors
   2. Chemoreceptors
   3. Thermoreceptors
   4. Mechanoreceptors

Dipeptides into amino acids are are converted through _____.

1. 1. Erypsin
   2. Trypsin
   3. Pepsin
   4. Amino peptidase

The liquid that escapes during defrosting frozen meat contains _____bacteria?

1. 1. Azobacter
   2. Campylobacter
   3. Salmonella
   4. Nitrobacter