True or false from answers in fill in the blank: if false what is the right answ

Question

True or false from answers in fill in the blank: if false what is the right answer?

____eumetazoa__________ phyla have bilateral symmetry and a mesoderm.

___protostomes______________  produce a mouth first during gastrulation and an anis*(can't use the actual word) later.

________deuterostome________ are chordates and echinoderms that form an oral opening second and an anal opening first.

Mollusk, such as the snail, primarily use ____sprial_______ holoblastic cleavage, in which the planes are not parallel or perpendicular to the animal vegetal axis, but instead at oblique angels. This leads to a spiral arrangement of the daughter blastomeres

A maternal effect is seen during cleavage. This means that the genotype of the developing snail is not influencing the direction of cleavage, but instead the genotype of the ____ovary__________ influences cleavage.

Individual C. elegans can produce both sperm and egg, making them ___hermaphrodites___________.

The first asymmetrical cleavage in rotational holoblastic cleavage produces an anterior found cell and a posterior ______PAR-2 and PAR-1__________

PAR proteins are involved in establishing cell polarity and the _____anterior and posterior regions_______________ in C. elegans

The __dorsal-ventral_________ axis is established in the division of the AB cell in C. elegans

Explanation / Answer

A. Eumetazoa are phyla that have bilateral symmetry and mesoderm- True. { Eumetazoa are phyla that have cells that develop into tissue and organs. They develop the 3 germ layers that form ecto, endo and mesoderm and have bilateral symmetry}

B. Protostomes produce mouth first during gastrulation and then anus-True {as the name suggest protostome-first mouth}

C. Deuterostome are echinoderms and chordates that form an oral opening second and an anal opening first-True

D. Mollusk such as snail primarily use holoblastic cleavage in which the planes are not parallel or perpendicular to the animal vegetal axis, but at oblique angle. This leads to the spiral arrangement of daughter blastomeres.- True

E. A maternal effect is seen during cleavage . This means that the genotype of the developing snail is not influencing the direction of cleavage, but instead the genotype of the ovary influences cleavage-True {the inheritance of the maternal genotype through egg}

F. Individual C. elegans can produce both sperm and egg making them hermaphrodites-True

G. The first asymmetrical cleavage in rotational holoblastic cleavage produces an anterior found cell and a posterior PAR-2 and PAR-1 containing P1 cell- True

H. Par proteins are involved in establishing cell polarity and the anterior and posterior regions in C. elegans-True

I. The dorsal-ventral axis is established in the division of the AB cell in C. elegans-True { the P1 cell- gives stem cell lineage}

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