Animal of the same phylum are grouped below. Choose the incorrect group from given below option

Shark, snake, whale, reptile belong to phylum-Chordata. Insect, spider and shrimp belong to phylum-Arthropoda. Fish, snail, squid and slug are molluscans, while earthworm is annelids, millipede is arthropods, Hirudinaria is common leech of phylum-Annelida

The correct Option is "Earthworm, millipede, leech"

Which one of the following is the feature of phylum-Chordata is also exhibited by adult tunicate?

Presence of visceral slits is exhibited by both Chordata and adult Tunicata members

The correct Option is "Possession of pharyngeal gill slits"

Possession of closed vascular system

Possession of ventral tubular nervous system

The point by which Annelida advanced over Nematoda is

Annelids have true coelom, metameric segmentation and closed circulation.

The correct Option is "All of the above"

A transverse section of Pheretima taken through the 10th segment is observed in microscope. Which of the following structures can be observed in the section?

A transverse section of Pheretima taken through the 10th segment shows the following structures - stomach, dorsal blood vessel, ventral blood vessel supraoesophageal vessel, anterior loops, ring vessel and micronephridia.

The correct Option is "Stomach, dorsal blood vessel, ventral blood vessel, supraoesophageal vessel, anterior loops, ring vessel and micronephridia"

Stomach, dorsal blood vessel, ventral blood vessel, lateral hearts, ring vessels and pharyngeal nephridia

Intestine, dorsal blood vessel, ventral blood vessel, supraoesophageal vessel and septal nephridia

Stomach, dorsal blood vessel, sub-neural blood vessel and lateral hearts

In forg’s heart, there are muscular ridges which consist of fibers called

In frog’s heart, a number of muscular ridges called columnae carne projected from the wall of ventricle into its cavity, dividing the peripheral part of the cavity into a number of pockets. It prevent suction that would occur with a flat surfaced membrane and thus impairs the heart’s ability to pump efficiently.

The correct Option is "Columnae carnae"

Organ system level of organisation is observed in

Organ system level of organisation is seen in chordates, annelids and molluscs. i.e., in all phyla from Platyhelminthes on wards

The correct Option is "All of these"

The snake eating snake is

The king cobra (Ophiophagus hannah) is the world’s longest venomous snake, which can be measured upto 6.7 metres or 22 feets in length. King cobra is a snake eater and its diet probably consists of other snakes like pythons and even smaller ones of its species.

The correct Option is "King cobra"

In Pheretima, the lateral hearts that connect the supra oesophageal blood vessel with ventral blood vessel are located in which segments?

The important transverse vessels in first 13 segments are lateral hearts (segments 7 and 9), anterior loops (segments 10 and 11) and lateral oesophageal hearts (setgments 12 and 13).

The correct Option is "7 and 9"

Trochophore is the larva of

Trochophore is ciliated larval stage of polychaetes (eg, Neries), molluscs and rotifers. Neopilina, Chiton and Pila belong to phylum-Mollusca.

The correct Option is "All of these"

In the given diagram, what does ‘A’ represent?

It represent the dorsal blood vessel of earthworm. It is the largest blood vessel. Behind the 13th segment, it is collecting vessel and between 1- 13, it is distributing vessel.