4.1 Features of the Kingdom Animalia

Flashcards covering the key features and concepts related to the Kingdom Animalia.

What is the defining characteristic of animals within the kingdom Animalia?

Animals are heterotrophic, meaning they do not produce their own food.

What type of symmetry do asymmetrical animals exhibit?

Asymmetrical animals exhibit no symmetry whatsoever.

What is the fate of the blastophore in protostomes?

In protostomes, the blastophore becomes the mouth.

What are the three main types of body symmetry in animals?

Asymmetry, radial symmetry, and bilateral symmetry.

What occurs during the process of cleavage in animal development?

Cleavage involves multiple cell divisions without cell growth, resulting in a multicellular structure.

What type of germ layers do diploblastic animals have?

Diploblastic animals have two germ layers: ectoderm and endoderm.

What is the role of Hox genes in animals?

Hox genes control embryonic development and determine body plans.

What is the difference between incomplete and complete metamorphosis?

Incomplete metamorphosis involves no drastic change between life stages; complete metamorphosis involves distinct stages like egg, larva, pupa, and adult.

Define the term 'eucoelomate'.

Eucoelomates are animals that possess a true coelom derived solely from mesoderm.

What does it mean for an organism to be motile?

Motile organisms are capable of movement.

What are the three categories of triploblastic animals based on body cavity?

Acoelomates, pseudocoelomates, and eucoelomates.

What separates ectoderm, endoderm, and mesoderm in triploblastic animals?

The ectoderm develops into outer structures, the endoderm develops into the digestive tract, and the mesoderm develops into muscle and other internal systems.

What happens during organogenesis?

Organogenesis is the process where specialization of cell tissues occurs, leading to the formation of organs.

What is gastrulation?

Gastrulation is the folding of the blastula to form the gastrula, establishing the three germ layers.

What type of nervous system complexity is indicated by the presence of cephalization?

Cephalization indicates a more complex nervous system, typically associated with a brain-like structure.

What is an example of a diploblastic animal?

Jellyfish are an example of diploblastic animals.

What is the significance of having a true coelom in animals?

A true coelom allows for complex organ systems and greater movement and function.