The ________ is an embryonic midline structure common to all members of the phylum Chordata that serves as a source of midline signals to surrounding tissues and as a major skeletal element of the developing embryo.
notochord
The correct answer is notochord.
Signaling from the notochord involves the release of various molecules, most notably Sonic Hedgehog (Shh). Shh secreted by the notochord ventralizes the developing neural tube, influencing the differentiation of motor neurons, and also patterns the somites, which give rise to vertebrae, ribs, and muscles. The notochord's role as a skeletal element provides rigidity along the anteroposterior axis, allowing muscles to work efficiently for locomotion, particularly in aquatic forms.
Similar Questions
Which of the following fall under phylum Arthropoda of the animal kingdom?
Which of the following is NOT a characteristic of Amphibia class of animals?
Which of the following is NOT a characteristic of Aves (birds) class of animals?
Herpetologist Deepak Veerappan has a ______ named after him which is known as 'Xylophis deepaki'.
Algae would generally NOT be found residing in which of the following?
Spongilla is an example of ______ water sponge.
Which of the following is an example of the phylum Mollusca?
The most unique characteristic of animals of the Mammalia class is the presence of:
- ____________ is an example of acoelomate.
The scientific name of Saccharomyces Cerevisiae, or “sugar-eating fungus” is given to which one of the following kitchen ingredient?
Important Questions from Zoology
Foot and mouth disease in cattle is caused by which micro organisms?
Contractile vacuole in protozoans mainly serves for
Which one is not a source of carbohydrate?
Worker honey-bee convey the direction of food source to other bees by
Mira and Divya are two small girls. Mira is fond of eating Samosa, Cutlet and Bread, whereas Divya likes food which are iron deficient. Mira and Divya can suffer which of the following diseases respectively?
