Animal Kingdom Flashcards
(25 cards)
What are heterotrophs?
Organisms that after taking in food, digestion occurs.
What are invertebrates?
Animals without a backbone.
What are vertebrates?
Animals with a backbone.
Animal cells are organized into ______.
Tissues
What is sexual reproduction?
Male produces sperm; female produces egg.
When does fertilization occur?
When the sperm penetrates the egg
What is a zygote?
A fertilized egg
What is asexual reproduction?
Single parent produces genetically identical offspring
What type of asexual reproduction occurs when offspring develop as a growth on the body?
Budding
What type of asexual reproduction occurs when the parent breaks into pieces, and pieces can develop into an adult?
Fragmentation
What type of asexual reproduction occurs when an organism can regenerate from a lost body part?
Regeneration
What type of asexual reproduction occurs when the female produces the eggs that develop without being fertilized?
Pathogenesis
What is a blastula?
A fluid-filled ball of cells formed by mitotic cell division of the embryo
What is the Gastrula?
A two cell-layer sac with an opening at one end that forms from the blastula during embryonic development
What is asymmetry?
No symmetry, irregular shape
What is radial symmetry?
Can be divided along any plane, through a central axis.
What is bilateral symmetry?
Can be divided into mirror image halves along one plane through the central axis.
What is the anterior?
Head
What is the posterior?
Tail
What is the Dorsal?
Backside
What is ventral?
Underside (belly)
What type of animals have a false body cavity?
Pseudocoelomates
What are protostomes?
The mouth develops first in the opening of the Gastrula
What are Dueterostomes?
The anus develops from the first opening in the Gastrula.
