Question

Populations of individuals belonging to same genetic stock differing markedly in vegetative characteristics are

• A. Flora
• B. Ecotype
• C. Ecotones
• D. Ecads

Answer 1

Answer: (D)

Ecads

Ecads or ecophenes are habitat forms, which are environmentally induced variations. They belong to the same genetic stock or species and the variations in their morphology (in shape, size, number and reproductive capacity) are induced by the environmental influences. The variations are not fixed but are temporary, somatic and reversible. If one type of ecad is transplanted into environment of another type of ecad, the differences would disappear.

Ecotypes are groupings of populations or ecological races or subspecies of a species in relation to different environmental or habitat conditions. These are inter-fertile forms or biotypes of a species, which possess different genetic compositions or genotypes and arise due to mutations, hybridization and isolation.

An ecotone is a transition area between two biomes. It is where two communities meet and integrate.

Flora is the plant life occurring in a particular region or time

So, the correct answer is 'Ecads'