when does the blastopore becomes the mouth or the anus

Range of thermoneutral D Range of tolerance Performance $ GR RG Environmental gradientemperature) Invertebrates 37 Which of the following is correctly associated with sponges? A Amoebocytes B True tissues Blastocoel D. The majority of coelomate invertebrates develop as protostomes (first mouth) in which the oral end of the animal develops from the first developmental opening. This dent, the blastopore, deepens to become the archenteron, the first phase in the growth of the gut. What ecological concept is represented in the diagram to the right? 5 Survival G-Growth Reproduction Optimal A Thermoneutral zone B. During maturation of some animals it evolves into the anus or the mouth in others it is covered over and contributes to the canal joining the primitive gut with the cavity of the neural tube, the primitive nervous system. In many animals the blastopore becomes the anus, although in some it closes up at the end of gastrulation and may appear again at or near the same site. Anus develops from the blastopore Both B and D 36. blastopore A mouth-like opening of the archenteron on the surface of an embryo in the gastrula stage. Spiral arrangement of cells B.Radial arrangement of cells C. You are looking at a frog egg undergoing early cleavage What would you expect to see? A.

Which of the following organisms would have the highest surface-to-volume ratio? A. The blastopore is the first opening of the digestive cavity that is formed during the gastrulation stage of embryonic development, as shown in Figure below. blastopore becomes anus, radial and indeterminate cleavage 34. What does the blastopore become in echinoderms In deuterostomes, the blastopore becomes the anus, and another opening generated later in development produces the mouth. blastopore becomes mouth, radial and indeterminate cleavage oblastopore becomes mouth spiral and determinate cleavage D.

During gastrulation, the archenteron develops into the digestive tube (primitive gut), with blastopore becoming either anus or mouth depending on the organism. blastopore becomes anus, spiral and indeterminate cleavage B. Both the archenteron and blastopore are formed during the gastrulation stage of embryonic development. Which of the following is descriptive of protostome? A.

When does the blastopore becomes the mouth or the anus