1.

Taxonomic hierarchy refers to

• stepwise arrangement of all tegories for classification of plants and animal
• a group of senior taxonomists who decide the nomenclature of plants and animals
• a list of botanists or zoologists who have worked on taxonomy of a species or group
• classification of a species based on fossil record

2.

Most stable carbocation is

3.

Which one of the following alkylbromides undergoes most rapid solvolysis in methanol solution to give corresponding methyl ether?

4.

During the phenomenon of resonance

• the amplitude of oscillation becomes large
• the frequency of oscillation becomes large
• the time period of oscillation becomes large
• All of the above

5.

Which of the following statements is wrong?

• Pollen grains remain viable for several months because their outer covering is made of sporopollenin
• No enzyme can degrade sporopollenin
• Pollen grains are well represented in fossil strata due to sporopollenin
• Pollen wall has cavities containing proteins

6.

The basic unit of study in Ecology is

• population
• organism
• community
• species