Characteristics
True or false:
Animals are eukaryotic, multicellular, and heterotrophic organisms.
True!
What is the difference between feeding and digestion?
Feeding consists of taking in food, digestion consists of transforming food to obtain the nutrients it contains.
Define sense organs.
receptors that contain receptor cells which perceive a specific type of stimulus and send a signal to the coordination systems, which interpret it as a sensation
True or false:
Sexual reproduction is the most common form of reproduction in animals.
True!
What are the two types of symmetry in animals and give an example for each.
Bilateral (lobster) and radial (starfish)
Give one example of a mechanical form of digestion and one example of a chemical form of digestion.
chewing vs. saliva excretion
What type of photoreceptor organs do these animals have?
a) fly
b) spider
c) owl
a) compound
b) simple
c) camera-type
What are the two types of asexual reproduction seen in animals?
budding and fragmentation
Explain the difference between a vertebrate and an invertebrate.
Invertebrates do not have a vertebral column or an internal skeleton. Vertebrates have bilateral symmetry, a vertebral column and an internal skeleton.
Name two ways animals can respirate.
Through the skin, through gills, through tracheae, through lungs
Give one example of a mechanoreceptor organ and its function
hearing, balance, lateral line, skin
Explain sexual dimorphism.
When males and females display clear physical differences as regards their external appearance. (example of lion and lioness)
Name three of the six groups of invertebrates.
Poriferans, cnidarians, worms, molluscs, arthropods, echinoderms
What waste products are expelled through the process of excretion?
it removes waste as a gas (carbon dioxide), as a liquid (urine and sweat), and as a solid (undigested food material)
Fill in the blank:
Movement is enabled by the action of _________.
Muscles
Explain the difference between oviparous, viviparous, and ovovivparous.
ovo- develop inside an egg which the mother expels into the environment
vivi- develop inside the mother's uterus
ovovivi- develop inside eggs which the mother keeps inside her body
What are the names of the five different groups of vertebrates and give a specific animal for a each group.
fish (clownfish), amphibians (frog), reptiles (turtle), birds (owl), mammals (rabbit)
Describe the difference between an open circulatory system and a closed circulatory system.
Open- circulating fluid can move in and out of vessels and it bathes the tissues of the body to exchange substances with the cells
Closed- circulating fluid never leaves the inside of the vessels. Substances are exchanged through the thin walls of the smallest vessels
Define neurons.
Cells that specialize in transmitting information by means of electrical signals called nerve impulses
Explain indirect development and give one example of an animal in which this occurs.
The individuals are born larvae and are different from the adults of their species. The transformation occurs after a series of modifications known as metamorphosis.
ex. butterfly, frog