Select the incorrect pair with respect to connecting link.
Select the incorrect pair with respect to connecting link.
The correct option is A Neopilina – Annelida and Echinodermata
Organisms which possess characters of two different groups are called connecting links.
Neopilina is considered a connecting link between Annelida and Mollusca. Annelidian characters are presence of spiral cleavage in eggs, presence of 5-6 pairs of ctenidia (feathery gills), 6 pairs of nephridia (for excretion), and two pairs of auricles. Molluscan characters are presence of shell, mantle and soft body. Hence option a is incorrect.
Figure : Neopilina
Euglena is a connecting link between plants and animals as it shows both autotrophic (preparing its own food when sunlight is available) and heterotrophic (act as predator) nutrition depending on the condition.
Figure : Euglena
Proterospongia is a connecting link between Protozoa and Porifera (sponges), because it has a protozoan type of colony and its individual cells are similar to the collar cell of sponges.
Figure : Proterospongia
Peripatus is the connecting link between Annelida and Arthropoda as they have jointed appendages like arthropods and have segmented bodies like that of annelids.
Figure : Peripatus
Organisms which possess characters of two different groups are called connecting links.
Neopilina is considered a connecting link between Annelida and Mollusca. Annelidian characters are presence of spiral cleavage in eggs, presence of 5-6 pairs of ctenidia (feathery gills), 6 pairs of nephridia (for excretion), and two pairs of auricles. Molluscan characters are presence of shell, mantle and soft body. Hence option a is incorrect.
Figure : Neopilina
Euglena is a connecting link between plants and animals as it shows both autotrophic (preparing its own food when sunlight is available) and heterotrophic (act as predator) nutrition depending on the condition.
Figure : Euglena
Proterospongia is a connecting link between Protozoa and Porifera (sponges), because it has a protozoan type of colony and its individual cells are similar to the collar cell of sponges.
Figure : Proterospongia
Peripatus is the connecting link between Annelida and Arthropoda as they have jointed appendages like arthropods and have segmented bodies like that of annelids.
Figure : Peripatus
