One of the commonest cause of food poisoning are the toxins produced by_____.

1. 1. Nitrobacter
   2. Nitrosomonas
   3. Azotobacter
   4. Campylobacter

Which of the following marine fishes are considered direct descendents of fresh water ancestors?

1. 1. Jelly Fish
   2. Bony fishes
   3. Star Fish
   4. Hagfish

Which of the following is a uni-nucleated cell?

1. 1. A smooth muscle cell
   2. A skeletal muscle cell
   3. A cardiac muscle cell
   4. None of these

A complex substance which on hydrolysis yields polyhydroxy aldehyde or ketone subunits is called _____.

1. 1. Carotin
   2. Lipid
   3. Carbohydrate
   4. Protein

Which of the following manufactures carbohydrates by the process of photosynthesis?

1. 1. chloroplast
   2. leucoplast
   3. chromoplast
   4. Noe of these

Strong chlorosis is due to the deficiency of_____in plants?

1. 1. Potassium
   2. Magnesium
   3. Phosphorus
   4. Nitrogen

Normal action potential of a neuronal cell is _____.

1. 1. plus 70 mv
   2. plus 55 mv
   3. plus 50 mv
   4. plus 80 mv

Which of the following is not the characteristic of dinoflagellates?

1. 1. Their cells are often covered with shells of interlocking cellulose plates impregnated with calcium
   2. They have blooms
   3. Most of them are unicellular
   4. All of these

_____ is about 2.4 meter in length and comprising about two fifth of the small intestine?

1. 1. Ileum
   2. Jejunum
   3. Caecum
   4. Duodenum

In some cases the blastomere can produce complete embryo the cleavage will be _____.

1. 1. Spiral and indeterminate
   2. Radial and determinate
   3. Spiral and determinate
   4. Radial and indeterminate