During the early period in taxonomy, only external morphology (the characters observable with naked eye) were the sole criteria to classify plants and animals. Theophrastus gave names and description of 480 plants in his book “Historia plantarum” , on the basis of their habit but Pliny the Edler introduced first artificial system of classification in his book Historia Naturalis. He classified both plants and animals.

Correct Option: C

During the early period in taxonomy, only external morphology (the characters observable with naked eye) were the sole criteria to classify plants and animals. Theophrastus gave names and description of 480 plants in his book “Historia plantarum” , on the basis of their habit but Pliny the Edler introduced first artificial system of classification in his book Historia Naturalis. He classified both plants and animals.

Linnaeus put forward an “Artificial system” of plant classification which was based on sexual characters. It is commonly also called as Sexual System of plant classification.

Correct Option: B

Linnaeus put forward an “Artificial system” of plant classification which was based on sexual characters. It is commonly also called as Sexual System of plant classification.

George Bentham and Joseph Dalton Hooker have given Natural system of classification. In this system of classification all the important characteristic of the organisms that provide information regarding their natural relationship are taken into consideration which helps in bringing out maximum number of similarities in a group and comparable differences with other groups of organisms. For example, mammals are characterised by the presence of mammary gland, hair, vivipary, 4 chambered heart etc.

Correct Option: B

George Bentham and Joseph Dalton Hooker have given Natural system of classification. In this system of classification all the important characteristic of the organisms that provide information regarding their natural relationship are taken into consideration which helps in bringing out maximum number of similarities in a group and comparable differences with other groups of organisms. For example, mammals are characterised by the presence of mammary gland, hair, vivipary, 4 chambered heart etc.

Fimbriae assist some bacteria in attaching to rocks or host body for obtaining establishment and nutrition.

Correct Option: A

Fimbriae assist some bacteria in attaching to rocks or host body for obtaining establishment and nutrition.

Motile bacteria have thin filamentous extensions on their cell wall called flagella.

Correct Option: B

Motile bacteria have thin filamentous extensions on their cell wall called flagella.