Chapter 1

Assertion: Each rank or taxon represents a unit of classification. Reason: Taxonomic categories are distinct biological entities and not merely morhpological aggregates.

Assertion: Human being has self-conciousness. Reason: Human is an organism who is aware of himself.

Assertion: In unicellular organism, the reproduction is synonymous with growth. Reason: Increase in the number of cells is also called growth.

Assertion: Growth is not taken as a defining property of living organism. Reason: Non living organism can also grow by accumulation of material on their surface.

Assertion: Growth in plant is said to be open. Reason: In plant, growth by cell division occurs throughout their life.

Assertion: In Planaria we call regeneration as true regeneration. Reason: A fragmented organism regenerates the lost part of its body and becomes a new organism.

Assertion: Growth and reproduction is synonymous in amoeba. Reason: Amoeba is unicellular organism.

Assertion: All living organism present, past and future are linked to one another. Reason: Because all organism sharing common genetic material, but to varying degrees.

Assertion: Scientific names of all organisms are based on agreed principles and criteria provided by ICBN. Reason: ICBN is International code for biological nomenclature.

Assertion: Binomial system provided by Linnaeus is used by biologist all over the world. Reason: This naming system using a two word format is convenient.

Assertion: Earliest classifications were based on the uses of various organisms. Reason: In early days human beings needed to find sources for their basic needs of food, clothing and shelter.

Assertion: Cockroach belongs to Insecta. Reason: Cockroach posses three pair of jointed legs in their thoracic region.