A Beka Book Biology Flashcards

Terms Definitions
Bipedal
Two-footed
Amplexus
Frog sex
Oviparous
Egg-laying mammals
Endoderm
Inner layer
Testes
Male reproductive organs
Ornithologists
Zoologists who study birds
Hoofs
Enlarged and thickened toenails
Invertebrates
Animals lacking a backbone
Toads
Leaping, tailless amphibians with rough, warty skin
Tuatara
An extremely rare, lizard-like reptile; inhabits a few rocky islands off the coast of New Zealand
Ruminants
Animals which chew their cud
Herpetologists
Zoologists who study reptiles and amphibians
Carapace
The upper shell of a turtle
Migration
Annually moving to a different region
Antlers
Solid hornlike structures which are shed annually
Mesentery
A special membrane which holds the pancreas in place
Chromatophores
Three types of branched pigment cells which control the skin coloration of amphibians as well as many reptiles and fish
Chalaza
A twisted chords that supports the yolk; runs through the middle of the albumen layers
Instinct
An unlearned knowledge that an animal possesses from birth
Animals
Living organisms that move from place to place in their environment, mainly for the purpose of obtaining food
Fetus
What a developing mammal is referred to in its later development, when it can be recognized as a young individual
Placenta
A membrane that becomes the link between the developing embryo or fetus and the mother
Sessile
Animals that are attached to one location but are able to move the environment - air or water - toward themselves for the purpose of trapping food
Hyrax
A defenseless animal that makes its home in the rocks
Canine
The family consisting of dogs and wolves; carnivores
Amphibians
Vertebrates that live in water and on land
Germinal spot
The location where the yolk is developed
Flock
Large groups of birds that gather just before the breeding season
Oviduct
Either of a pair of tubes conducting the egg from the ovary to the uterus
Gestation period
The entire period of growth from fertilization to birth
Cud
Food of a ruminant regurgitated to be chewed again
Quadrate bone
A snake bone loosely attached to the skull and the jaw that enables the snake to open its mouth wide
Crop milk
Milk that is rich in protein and fat
Birds of prey
Birds known for their fierce and precise hunting skills
Spermaceti
Waxy substance found in the head of a sperm whale
Hibernate
To be in an inactive or dormant state (especially during the winter)
Pygmy shrew
The smallest mammal in the world; 1.5 inches in length and weighing less than a penny
Concertina movement
A type of snake movement in which the snake moves the front part of its body forward, coils it slightly to anchor it, and then pulls the back part forward
Spotted owl
A type of small owl that is fairly abundant in the western United States; an example of a controversial "endangered species" protected by the Endangered Species Act
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