|
1.1 The study of life Read Online
Viewed from space, Earth offers no clues about the diversity of life forms that reside there. The first forms of life on Earth are thought to have been microorganisms that existed for billions of years in the ocean before plants and animals appeared. The mammals, birds, and flowers so familiar to us are all relatively recent, originating 130 to 200 million years ago. Humans have inhabited this planet for only the last 2.5 million years, and only in the last 200,000 years have humans started looking like we do today.
Chapter 27: Introduction to Animal Diversity MCQ Multiple Choices Questions Quiz Test Bank
27.1 Features of the Animal Kingdom
27.2 Features Used to Classify Animals
27.3 Animal Phylogeny
27.4 The Evolutionary History of the Animal Kingdom
Question: Which of the following is thought to be the most closely related to the common animal ancestor?
Choices:
fungal cells
protist cells
plant cells
bacterial cells
Question: What type of data is primarily used to determine the existence and appearance of early animal species?
Choices:
molecular data
fossil data
morphological data
embryological development data
Question: Consulting the modern phylogenetic tree of animals, which of the following would not constitute a clade?
Choices:
deuterostomes
lophotrochozoans
Parazoa
Bilateria
Question: Which of the following periods is the earliest during which animals may have appeared?
Choices:
Ordovician period
Cambrian period
Ediacaran period
Cryogenian period
Question: Which of the following is not possible?
Choices:
radially symmetrical diploblast
diploblastic eucoelomate
protostomic coelomate
bilaterally symmetrical deuterostome
Question: During embryonic development, unique cell layers develop and distinguish during a stage called ________.
Choices:
the blastula stage
the germ layer stage
the gastrula stage
the organogenesis stage
Question: Which of the following phenotypes would most likely be the result of a Hox gene mutation?
Choices:
abnormal body length or height
two different eye colors
the contraction of a genetic illness
two fewer appendages than normal
Question: Which of the following is not a feature common to most animals?
Choices:
development into a fixed body plan
asexual reproduction
specialized tissues
heterotrophic nutrient sourcing
Question: An animal whose development is marked by radial cleavage and enterocoely is ________.
Choices:
a deuterostome
an annelid or mollusk
either an acoelomate or eucoelomate
none of the above
Question: As with the emergence of the Acoelomorpha phylum, it is common for ____ data to misplace animals in close relation to other species, whereas ____ data often reveals a different and more accurate evolutionary relationship.
Choices:
molecular : morphological
molecular : fossil record
fossil record : morphological
morphological : molecular
Question: Which of the following organism is most likely to be a diploblast?
Choices:
sea star
shrimp
jellyfish
insect