Which one of the following annelids is commonly known as the sea mouse?
The typhlosole of earthworm is related with
Proboscis of butterfly is formed from
The ophiopluteus larva of Echinodermata belongs to the class
In pigeon, milk is secreted by both sexes through
Which one of the following is a fish?
Petromyzon is not a true fish because of
Answer: absence of paired fins and true jaws
Desmosomes are concerned with
Spindle apparatus is made up of
Which of the following types of gametes are produced from an animal with RrYY genotype?
Frameshift mutation occurs, when
Answer: base is added or deleted
The successive nucleotides of DNA are covalently linked through
Answer: phosphodiester bond
Wheel organ is found in
In which one of the following fishes, male shows pareintal care?
Bidder's organ in frog is attached to