Question

unit 7 quiz 3 biology integrated - b - spd - 2526 / unit... gabriella rodriguez

1. drag and drop the correct term for each definition.

choices: cartilage, agnatha
fins: fan - shaped membranes supported by rigid spines that help the fish maintain balance, move and steer
scales: thin bony plates that are formed from the skin
bones: hard, living, mineralized tissue that most vertebrate possess
gills: feathery slits that take oxygen from water and release carbon dioxide as a waste gas
osteichthyes: a tough, flexible, bonelike material

1. ninety - five percent of mammals ____.

are intelligent
are covered in hair
develop inside their mother with a placenta
have teeth that never stop growing

1. most fish reproduce internal with external fertilization.
2. fill in true or false.

false: reptiles reproduce with external fertilization.
true: parent reptiles provide little to no care for the hatchlings.
false: reptiles are endotherms.
true: reptiles have amniotic eggs.

Explanation:

1. The definitions match the terms as follows: "fan - shaped membranes supported by rigid spines that help the fish maintain balance, move and steer" is fins; "thin bony plates that are formed from the skin" is scales; "hard, living, mineralized tissue that most vertebrate possess" is bones; "feathery slits that take oxygen from water and release carbon dioxide as a waste gas" is gills; "a tough, flexible, bonelike material" is cartilage. Agnatha is a class of fish and not a match for these descriptions.
2. Ninety - five percent of mammals develop inside their mother with a placenta. This is a characteristic of placental mammals which make up the majority of mammalian species.
3. Most fish reproduce with external fertilization. Female fish release eggs and male fish release sperm into the water where fertilization occurs.
4. Reptiles reproduce with internal fertilization, so "Reptiles reproduce with external fertilization" is False. Parent reptiles generally provide little to no care for the hatchlings, so this is True. Reptiles are ectotherms (cold - blooded), not endotherms, so "Reptiles are endotherms" is False. Reptiles have amniotic eggs which allow them to reproduce on land, so "Reptiles have amniotic eggs" is True.

Answer:

1. fins - fan - shaped membranes supported by rigid spines that help the fish maintain balance, move and steer; scales - thin bony plates that are formed from the skin; bones - hard, living, mineralized tissue that most vertebrate possess; gills - feathery slits that take oxygen from water and release carbon dioxide as a waste gas; cartilage - a tough, flexible, bonelike material
2. develop inside their mother with a placenta
3. external
4. False; True; False; True