Smallest disease causing agents in plants are ?

1. 1. viroids
   2. mycoplasma
   3. prions
   4. virion

Which of the following is a compensation point _____.

1. 1. Rate of photosynthesis increases, so do the O2 production, with a net release of oxygen coupled with the uptake of CO2
   2. Leaves respire and utilize O2 and release CO2
   3. Rate of respiration becomes more than rate of photosynthesis
   4. Photosynthesis and respiration occur at same rate. So there is not net exchange of gases between atmosphere and plants

Of the following, which one has more variety of nutrition_____.

1. 1. Fungi
   2. Animals
   3. Plants
   4. Bacteria

Which of the following structure primarily helps in attachment of bacteria on various surfaces_____.

1. 1. Pili
   2. Flagella
   3. Both A & B
   4. All of these

The monosaccharide found in some bacteria and occurring rarely are_____.

1. 1. Hexoses
   2. Trioses
   3. Pentoses
   4. Tetroses

In Cx(H2O)y x ranges from_____.

1. 1. 3 to many thousand
   2. 1 to 4 thousand
   3. 3 to 6 thousand
   4. 5 to 9 thousand

All phostosynthetic euglenoids lose their chlorophyll when grown in dark and obtain their nutrients heterotrophically this statement is_____.

1. 1. False
   2. True
   3. May be true may be false
   4. Unpredictable

Messenger RNA is formed in_____.

1. 1. Chloroplast
   2. Mitochondria
   3. Nucleus
   4. All of these

A chemical substance that reacts with enzyme but is not transformed into product and thus blocking active site is called_____.

1. 1. Substrate
   2. Inhibitor
   3. Co-factor
   4. Promotor

Ribosomes were discovered by_____.

1. 1. Palade
   2. Golgi
   3. De Duve
   4. R.Brown