TCC - BIOL 1407 - EXAM 3
QUESTIONS AND ANSWERS
What is Nutrition? - Correct Answers -The process by which an organism obtains from
its environment, the energy and chemical elements or compounds it needs for proper
survival, growth, and reproduction.
How is the classification systems for animals separated? - Correct Answers -Based on
WHAT they eat, and Based on HOW they eat.
How are animals classified based on WHAT they eat? - Correct Answers -Herbivores,
carnivores, omnivores
What are herbivores? - Correct Answers -plant eaters (ex: cows, deer, insects, some
reptiles)
What are carnivores? - Correct Answers -Meat eaters (ex: wolves, lions, tigers, hawks,
killer whales, alligators)
What are omnivores? - Correct Answers -Eats plant/animal mixtures (ex: bears,
raccoons, cockroaches, humans)
What is their dentition for diet? - Correct Answers -incisors for grabbing
canines for holding on
molars for cutting
pre-molars for grinding
How are animals classified based on HOW they eat? - Correct Answers -filter feeders,
substrate feeders, fluid feeders, bulk feeders
What are filter feeders? - Correct Answers -Organisms that have mechanisms which
enable them to strain water and ingest the material they strained from the water. (ex:
clams, oysters, whales, some sharks)
Example of filter feeder? - Correct Answers -Baleen is a filter-feeding system inside the
mouths of baleen whales. To use baleen, the whale first opens its mouth underwater to
take in water. The whale then pushes the water out, and animals such as krill are
filtered by the baleen and remain as a food source for the whale.
, What are substrate feeders? - Correct Answers -Organisms that live on or in their food
source. (ex: caterpillars, earthworms)
Example of substrate feeder? - Correct Answers -A leaf miner feeds on the mesophyll of
leaves between the epidermis and leaves a trail of feces behind it.
What are fluid feeders? - Correct Answers -Organisms that receive their nutrients in
liquid form. (ex: ticks, aphids, butterflies, mosquitoes, hummingbirds)
Example of fluid feeder? - Correct Answers -Tiger mosquito
What is a bulk feeder? - Correct Answers -An organism that eats food in bulk, requiring
a stomach for storage and breakdown. They make up the majority of animals. (ex:
humans, meat-eating sharks, tigers, wolves, cows, snakes, birds)
What are the 2 methods of digestion? - Correct Answers -Intracellular and Extracellular
digestion
What is Intracellular digestion? - Correct Answers -Breakdown of food on a cellular
level. Where the cell takes in food particles by endocytosis. The food particle is then
broken down into a food vacuole. (ex: paramecium caudatum, sponges)
What is Extracellular digestion? - Correct Answers -Digestion that takes place in
compartments which are open to the outside. This is utilized by most animals.
What are the 2 forms of extracellular digestion? - Correct Answers -Gastrovascular
cavity and alimentary canal.
What is the gastrovascular cavity? - Correct Answers -Utilized by some of the simpler
animals. Only one opening to the outside. The "mouth" opens into a cavity within the
body, lined by a gastrodermis. Specialized cells in gastrodermis secrete digestive
enzymes & breaks food down. Other cells then absorb whatever else can be absorbed.
What can't be absorbed exits as waste through the "mouth".
What is an Alimentary Canal? - Correct Answers -A single, continuous tube running
from the mouth to anus.
What are the 4 stages in food processing? - Correct Answers -ingestion, digestion,
absorption, elimination
What is ingestion? - Correct Answers -taking food into the mouth
What is digestion? - Correct Answers -chemical and physical breakdown of food
What is absorption? - Correct Answers -taking in of nutrients
QUESTIONS AND ANSWERS
What is Nutrition? - Correct Answers -The process by which an organism obtains from
its environment, the energy and chemical elements or compounds it needs for proper
survival, growth, and reproduction.
How is the classification systems for animals separated? - Correct Answers -Based on
WHAT they eat, and Based on HOW they eat.
How are animals classified based on WHAT they eat? - Correct Answers -Herbivores,
carnivores, omnivores
What are herbivores? - Correct Answers -plant eaters (ex: cows, deer, insects, some
reptiles)
What are carnivores? - Correct Answers -Meat eaters (ex: wolves, lions, tigers, hawks,
killer whales, alligators)
What are omnivores? - Correct Answers -Eats plant/animal mixtures (ex: bears,
raccoons, cockroaches, humans)
What is their dentition for diet? - Correct Answers -incisors for grabbing
canines for holding on
molars for cutting
pre-molars for grinding
How are animals classified based on HOW they eat? - Correct Answers -filter feeders,
substrate feeders, fluid feeders, bulk feeders
What are filter feeders? - Correct Answers -Organisms that have mechanisms which
enable them to strain water and ingest the material they strained from the water. (ex:
clams, oysters, whales, some sharks)
Example of filter feeder? - Correct Answers -Baleen is a filter-feeding system inside the
mouths of baleen whales. To use baleen, the whale first opens its mouth underwater to
take in water. The whale then pushes the water out, and animals such as krill are
filtered by the baleen and remain as a food source for the whale.
, What are substrate feeders? - Correct Answers -Organisms that live on or in their food
source. (ex: caterpillars, earthworms)
Example of substrate feeder? - Correct Answers -A leaf miner feeds on the mesophyll of
leaves between the epidermis and leaves a trail of feces behind it.
What are fluid feeders? - Correct Answers -Organisms that receive their nutrients in
liquid form. (ex: ticks, aphids, butterflies, mosquitoes, hummingbirds)
Example of fluid feeder? - Correct Answers -Tiger mosquito
What is a bulk feeder? - Correct Answers -An organism that eats food in bulk, requiring
a stomach for storage and breakdown. They make up the majority of animals. (ex:
humans, meat-eating sharks, tigers, wolves, cows, snakes, birds)
What are the 2 methods of digestion? - Correct Answers -Intracellular and Extracellular
digestion
What is Intracellular digestion? - Correct Answers -Breakdown of food on a cellular
level. Where the cell takes in food particles by endocytosis. The food particle is then
broken down into a food vacuole. (ex: paramecium caudatum, sponges)
What is Extracellular digestion? - Correct Answers -Digestion that takes place in
compartments which are open to the outside. This is utilized by most animals.
What are the 2 forms of extracellular digestion? - Correct Answers -Gastrovascular
cavity and alimentary canal.
What is the gastrovascular cavity? - Correct Answers -Utilized by some of the simpler
animals. Only one opening to the outside. The "mouth" opens into a cavity within the
body, lined by a gastrodermis. Specialized cells in gastrodermis secrete digestive
enzymes & breaks food down. Other cells then absorb whatever else can be absorbed.
What can't be absorbed exits as waste through the "mouth".
What is an Alimentary Canal? - Correct Answers -A single, continuous tube running
from the mouth to anus.
What are the 4 stages in food processing? - Correct Answers -ingestion, digestion,
absorption, elimination
What is ingestion? - Correct Answers -taking food into the mouth
What is digestion? - Correct Answers -chemical and physical breakdown of food
What is absorption? - Correct Answers -taking in of nutrients
