ตัวอย่าง 2

Arthropods can be divided into many groups. The three that we study are

• crustaceans, insects, arachnids
• echinoderms, segmented worms, sponges
• mammals, birds, fish
• amphibians, reptiles, birds

Which is not a characteristic of mollusks?

• soft bodies
• gills or lungs
• exoskeleton
• some have shells

What group of animals has the following characteristics?
-ectothermic
-live in "2 worlds"
-metamorphosis
-lay eggs in water
-born with gills, develop lungs

• reptiles
  reptiles
• amphibians
• echinoderms
• arthropods

How do scientists classify organisms?

• According to their living arrangement

• According to their feeding habits

• According to their mating habits

• According to their shared characteristics

Animals that have no backbone are called ______________.

• Invertebrates
• Vertebrates
• Exoskeleton
• Endoskeleton

A student finds the following animals in his garden: frog, snake, snail, and lizard. He classifies the snail in one group and the other animals in a second group. Which are the animal's groups?

• amphibians, reptiles

• invertebrates, reptiles

• invertebrates, vertebrates

• animals with gills, animals with lungs

Water is absorbed by the plant through the roots, and transpiration takes place as the water exits the ________.

• Leaves

• Roots

• Stem

Which part of a plant is responsible for the majority of photosynthesis?

• Leaves

• Roots

• Stem

• Stomata

Which part of the plant is where pollination occurs? 

• Leaves 
• Roots
• Stems
• Flowers

Hydrogen and carbon dioxide are used to make what in plant cells?

• Oxygen

• Stoma

• Chlorophyl

• Glucose