Untitled Flashcards Set

What is a key feature of animal body plans?

Physical structure features that animals have.

What type of symmetry means no symmetry?

Asymmetry.

What is radial symmetry?

A body plan where the organism can be divided into equal halves along multiple planes.

What is bilateral symmetry?

A body plan where the organism can be divided into two equal halves along one plane.

What are the advantages of bilateral symmetry?

Increased mobility, ability to move in various directions, and efficiency in movements.

What are the three types of tissue or germ layers?

Ectoderm, Mesoderm, Endoderm.

What does the ectoderm develop into?

It forms the exoskeleton.

What does the mesoderm develop into?

It develops into organs.

What does the endoderm form?

It forms the inner lining of organs.

What is acoelomate?

An organism that has no body cavity.

What is coelomate?

An organism that has a body cavity.

What type of gut opening does a blind gut have?

One gut opening for intakes and outtakes.

What is a through gut?

An organism with two gut openings, one for intakes and the other for waste release.

How many kingdoms are there in the classification system?

There are 7 kingdoms.

What characterizes jellyfish?

They have no cephalisation, are radially symmetrical, and are diploblastic.

How are earthworms described in terms of symmetry?

They are bilaterally symmetrical.

What type of gut do earthworms have?

They have two openings to the gut.

What role do pollinators play in ecosystems?

They assist in the process of pollination.

What do decomposers do in ecosystems?

They break down dead organic matter into simpler substances for nourishment.

What role do earthworms play in soil health?

They aerate the soil by creating tunnels as they burrow.