Flashcards in Chapter 16-Mammals Deck (102)
What is the inner layer of the primary germ layers where the cells in it specialize to become the digestive tract, respiratory tract, urinary bladder, and urethra?
During the embryos growth, it is surrounded by a fluid called the _______________. Thus fluid absorbs the shocks that are created when the mother runs or is bumped by an object?
When the embryo is later in its development, when it is recognized as a young individual, it is called a:
The entire period of growth from fertilization to birth is called the:
What is connects the fetus to the placenta that will be cut by the mother, freeing the newborn from the mother?
Mammals that bear their young Alvie and nourish them during development are called:
What kind of mammals do not bear their young alive?
What are the three major categories of mammals based on the way the developing young are nourished?
What are the largest living land animals, and are the mammals with trunks?
What are the enlarged incisor teeth of elephants, made of ivory?
What are the dugongs and manatees often called because they graze like it, and can be seen in shallow waters of tropical rivers, lagoons, and sea coasts?
The echidna and duckbill platypus are the only ____________ in existence.
What is the slowest land mammal, with a usual speed of 6 to 8 feet per minute?
What term refers to an animal that is active during the daytime?
What is the term that refers to animals that are active at night?
What us pouched mammal referred to as:
What are the young marsupials raised in?
What is the largest living marsupial?
What term refers to an animal that eats insects?
What is one order of small mammals that gets its name from the insect-eating habits of its members?
The smallest mammal is believed to be the:
What are some examples of the pouched mammals?
What are some examples of the insect-eating mammals?
What is an example of the flying mammals, that spend longer periods of uninterrupted hibernation than any other mammal?
What are the two main categories of marine mammals?
What kind of whales have two rows of comblike plates that hang like curtains from each side of the upper jaw?
What is the world's largest animal, that may attain a length of 110 feet and a weight of more than 150 tons?
What kind of whales include such marine animals as sperm whales, killer whales, dolphins, and porpoises, and can be up to 65 feet long?
The sperm whale's huge head contains a large amount of a waxy substance known as _________________, that was once used as a lamp oil, as a lubricant, and as a base for cosmetics.