True or false closely related embroyos look more alike - and for a longer time than embryos of distant relatives?

Updated: 4/28/2022

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True

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What is the significance of Protochordates?

The name Protochordates literally means 'the first chordates.' The chordates include fish, amphibians, reptiles, birds and mammals. The protochordates fall into two broad groups or subphyla - the Urochordata and the Cephalochordata. Urochordata The urochordata includes the group known as the tunicates - animals whose free-swimming larvae have a notochord* and a nerve chord. The adults are sessile - that is to say they are anchored to one place on the Reef. CephalochordataCephalochordates, or lancelets, are fish-like animals that have a notochord and nerve chord along the entire length of their bodies and which persist all their lives. * A notochord is a an elongated cellular chord enclosed in a sheath, that forms the primitive skeleton of chordate embryos (including humans) and adult cephalochordates. The name Protochordates literally means 'the first chordates.' The chordates include fish, amphibians, reptiles, birds and mammals. The protochordates fall into two broad groups or subphyla - the Urochordata and the Cephalochordata. Urochordata The urochordata includes the group known as the tunicates - animals whose free-swimming larvae have a notochord* and a nerve chord. The adults are sessile - that is to say they are anchored to one place on the Reef. Cephalochordata Cephalochordates, or lancelets, are fish-like animals that have a notochord and nerve chord along the entire length of their bodies and which persist all their lives. * A notochord is a an elongated cellular chord enclosed in a sheath, that forms the primitive skeleton of chordate embryos (including humans) and adult cephalochordates.

What is suggested by the similarity of early embryos of different species of vertebrates?

evolution from a distant common ancestor

Why frogs always use in research?

Frogs are mostly used in research because they are the closest living relatives to man that are easy to raise in captivity and their embryos are easily handled when doing studies.

How do stingrays reproduce?

When a male is courting a female, he will follow her closely, biting at her pectoral disc. Stingrays bear live young in "litters" of five to thirteen. The femaleholds the embryos in the womb without a placenta. Instead, the embryos absorb nutrients from a yolk sac, and after the sac is depleted, the mother provides uterine "milk".

What is the stage of the plant embryos in which the embryos are alive but not growing?

dormancy

Where do mammal embryos get their warmth from?

From the mother's body, - they are inside it while they are embryos.

What do developing embryos require for survival?

Embryos dont need to survive.

What is a hybrid embryo?

it is the action of fertilising an egg with the sperm of a closely related species. Tests are done on the embryos for a period of no more than 14 days (two weeks) and then the embryo must be destroyed.

When was The One with the Embryos created?

The One with the Embryos was created on 1998-01-15.

What is the study of the development of embryos?

Embryology

What type of embryos have pharngeal slits?

All chordates embryos have pharngeal slits.

Do early chick and pig embryos have a similar structure and appearance?

The early embryos of all animals have a very similar appearance. This is no different for chicken and pig embryos.

What is the source of nourishment for developing fish embryos is?

what is the source of nourishment for developing fish embryos?