1.Morphogenesis can be produced by processes including changes in cell appearanc
ID: 3512125 • Letter: 1
Question
1.Morphogenesis can be produced by processes including changes in cell appearances and locations. When an embryonic cell starts as an epithelial cell, it would follow this sequence of changes or events in order to lay down an organ rudiment: (Choose the correct sequence in numbers below to rearrange this set of numbered words here.)
1. migrate
2. new tissue specialization
3. delamination
4. mesenchymal cell transition
5. shape changes
6. aggregate
7. disperse
8. elongate toward the apex
2.
Two synapomorphies of the somitichordata are relected in its name. They are the presence of _________, and retention of larval characteristics such as ____________, neural tube, and postanal tail as adults. This second character is usually attributed to ________________.
protostoma / prochorda / protraction
stomata / spinal cords / deceleration
stenosis / phrenosis / phonetics
somites / notochord / paedomorphosis
notochord / somites / peramorphosis
1.protostoma / prochorda / protraction
2.stomata / spinal cords / deceleration
3.stenosis / phrenosis / phonetics
4.somites / notochord / paedomorphosis
notochord / somites / peramorphosis
Explanation / Answer
1. Disperse, mesenchymsl cell transition, elongate, shape changes, aggregate, delamination ans migration.
2. Presence of notochord and retention of larval characteristics such as somites. Second character is attributed to peramorphosis.
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