Admin Table of Contents
- 1 What would the protist ancestor of animals most likely be?
- 2 What is the most ancient branch point in animal phylogeny?
- 3 What is the ancestor to animals?
- 4 Which organism is most closely related to all animals?
- 5 Which of the following is not a characteristic of all animals?
- 6 What do animals ranging from corals to monkeys have in common?
What would the protist ancestor of animals most likely be?
Most animal phyla belong to the clade Radiata. All animals share a common ancestor. It is thought to have been a protist similar to a choanoflagellate.
What is the most ancient branch point in animal phylogeny?
the most ancient branch point in animal phylogeny is that between having. radial or bilateral symmetry.
What distinguishes a Coelomate animal from a Pseudocoelomate animal is that?
have a body cavity completely lined by mesodermal tissue, whereas pseudocoelomates do not. contain tissues derived from mesoderm, whereas pseudocoelomates have no such tissue.
What is the correct sequence of the following four events during an animals development?
Fertilization – cleavage – gastrulation – differentiation.
What is the ancestor to animals?
Researchers from UC Riverside have discovered the oldest known ancestor of almost all animals, including humans – and it’s a worm. Evolutionary biologists have long been searching for fossils from the oldest multicellular organisms, but until now, none of the creatures found could have been our own first ancestors.
chimpanzees
FAMILY TREE of the Hominidae shows that chimpanzees are our closest living relatives. There are two major classes of evidence that allow us to estimate how old a particular clade is: fossil data and comparative data from living organisms. Fossils are conceptually easy to interpret.
Do all animals have a common ancestor?
All living beings are in fact descendants of a unique ancestor commonly referred to as the last universal common ancestor (LUCA) of all life on Earth, according to modern evolutionary biology. The more recent the ancestral population two species have in common, the more closely are they related.
Which of the following are the only extant animals that descended directly from dinosaurs?
Answer: D) Birds are the only extant animals that descended directly from dinosaurs.
Which of the following is not a characteristic of all animals?
90 Cards in this Set
| All of these are characteristic of all animals except… a. multicellular b. heterotrophic c. no cell wall d. sexual reproduction e. all are characteristic of all animals | All of these |
|---|---|
| What is the only group without true tissues? a. round worms b. tape worms c. insects d. sponges e. sea cucumber | Sponges |
What do animals ranging from corals to monkeys have in common?
What do animals ranging from corals to monkeys have in common? Animal tissues develop from embryonic germ layers. Triploblastic animals have three germ layers (ectoderm, mesoderm, and endoderm) and three basic body plans related to body cavities (acoelomate, pseudocoelomate, and coelomate).
What is the correct order for early embryonic development in animals?
Hence the correct answer is ‘C’ i.e, Zygote-morula-blastula-gastrula-embryo.
What is the common ancestor of mammals?
The cynodonts, a theriodont group that also arose in the late Permian, include the ancestors of all mammals.