The document discusses different species concepts, including morphological, biological, phylogenetic, and unified species concepts, each focusing on various aspects of species classification. It mentions species variations in morphology, chromosome numbers, and shell color. The conclusion reinforces that all the discussed concepts are valid, indicating option 'e' as the correct answer.

1. 1. According to morphological species concept focus on external physical characters such as
size, shape, color structure of the organism .
2. Biological species concept explains why the members of species are resemble to one another.
When two organisms are breeded their genes pass into their combined offspring.
3. Phylogenetic species concept defines a species as a group having a shared and unique
evolotionary history. The offsprings in the concept are parental pattern of ancestry and descent.
4. Unified species concept achieved by treating existing as separately and secondary species
criteria as different line of evidence.
5. From the above quenstion species XL and XXL are showing variation in their morphology and
their number of chromosome. The remaining species show variation in the colour of shell.
6. From the above infromation the correct answer is option "e" all the above.
Solution
1. According to morphological species concept focus on external physical characters such as
size, shape, color structure of the organism .
2. Biological species concept explains why the members of species are resemble to one another.
When two organisms are breeded their genes pass into their combined offspring.
3. Phylogenetic species concept defines a species as a group having a shared and unique
evolotionary history. The offsprings in the concept are parental pattern of ancestry and descent.
4. Unified species concept achieved by treating existing as separately and secondary species
criteria as different line of evidence.
5. From the above quenstion species XL and XXL are showing variation in their morphology and
their number of chromosome. The remaining species show variation in the colour of shell.
6. From the above infromation the correct answer is option "e" all the above.