The chlorophyll molecule is embedded in the core of thylakoid membrane which acts as_____.

1. 1. Hydrophobic
   2. Hydrophilic
   3. Both of these
   4. None of these

Strong chlorosis is due to the deficiency of_____in plants?

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

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

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

Humans can hear in the range of _____to _____ertz (Hz).?

1. 1. 30 Hz to 30,000 Hz
   2. 10 Hz to 10,000 Hz
   3. 40 Hz to 40,000 Hz
   4. 20 Hz to 20,000 Hz

PH of fresh Saliva?

1. 1. 5
   2. 7
   3. 8
   4. 10

Which one is incorrect pair?

1. 1. Dichotomous – Vernation
   2. Lycopods – Ground pries
   3. Sori – Indusium
   4. Arthrophytes – Jointed

Deficiency of which of the following causes chlorosis_____.

1. 1. Magnesium
   2. Nitrogen
   3. Both A and B
   4. Iron

The sum of genes in a population is called _____.

1. 1. Lethal gene
   2. Genotype
   3. Karyotype
   4. Gene pool

Purple non-sulphur bacteria is an example of_____.

1. 1. Saprotrophic bacteria
   2. Photosynthetic bacteria
   3. Heterotrophic bacteria
   4. Chemosynthetic bacteria

Exoskeleton of a marine snail is composed of_____.

1. 1. CaPO4
   2. SiO2
   3. CaCO3
   4. CaSO4