E. coli and example of_____.

1. 1. Aerobic bacteria
   2. Anaerobic bacteria
   3. Microaerophilic
   4. Facultative bacteria

The only group of algae having no flagellated motile cells at any stage is_____.

1. 1. Rhodophyta
   2. Chrysophyta
   3. Phaeophyta
   4. Pyrrophyta

The skeleton of sponges is made up of_____.

1. 1. Calcium
   2. Silica
   3. Both A & B
   4. All of these

There are about _____muscles in human beings.

1. 1. 650
   2. 750
   3. 850
   4. 950

Astronauts may use which technique to grow fruits and vegetables ?

1. 1. Tissue culture techniques
   2. Hydroponic culture technique
   3. Cloning
   4. Pasterisation

Under resting membrane potentials:

1. 1. Outer surface of neuron is more positive
   2. Inner surface of neuron is more positive
   3. Both of these surfaces are equally positive
   4. All of these.

Cellular organelles related with H2O2 are_____.

1. 1. Lysosomes
   2. Glyoxisomes
   3. Ribosomes
   4. Peroxisomes

Melanin pigment in cockroach is found in_____.

1. 1. Endocuticle
   2. Epicuticle
   3. Exocuticle
   4. None of these

Sporangia of which of the following tracheopytes develop singly on the upper side of sporophylls which may or may not be arranged to form strobili_____.

1. 1. Lycopsida
   2. Psilopsida
   3. Prteropsida
   4. Sphenopsida

Steroids, a biologically active organic compound, are derived from _____.

1. 1. Carbohydrates
   2. Hormones
   3. Chemicals
   4. Cholesterol