Biology · Grades 1–4
Animal groups
Study guide for Grades 1 to 4: 2 worked examples and 2 practice questions. Sort animals by features you can check: milk for babies, feathers, gills, six legs, dry scales or moist skin.
Rule and key idea
Sort animals by features you can check: milk for babies, feathers, gills, six legs, dry scales or moist skin.
mammals · birds · fish · insects · reptiles · amphibians
Worked examples
Which animal is a bird: an eagle or a cod?
An eagle is a bird: it has feathers and lays eggs. A cod is a fish.
an eagle
Which animal is a reptile: a turtle or a butterfly?
A turtle is a reptile: it has dry, scaly skin. A butterfly is an insect.
a turtle
Try two questions
Which animal is a fish: a lizard or a shark?
- a lizard
- a shark
Which animal is an amphibian: a toad or an owl?
- a toad
- an owl
Answers and reasoning
Answers and marking notes
- a shark
A shark is a fish: it lives in water and breathes with gills. A lizard is a reptile.
- a toad
A toad is an amphibian: it has moist skin and usually starts life in water. An owl is a bird.
How this page was made: written for StudyBrix with AI assistance from our own templates. Answers and worked examples are checked by automated tests, and grade bands are approximate, not an official curriculum alignment. See the editorial policy for corrections. Editorial policy