3rd grade ecosystems and food chains

Question 1

seeds → mouse → owl What is the seeds in this food chain?

• A. producer
• B. secondary consumer
• C. tertiary consumer
• D. primary consumer

Question 2

What is one downside of living in a big group?

• A. Food must be shared, and illnesses spread more easily.
• B. Nobody ever helps anyone.
• C. Groups are always too cold.
• D. Predators can never find groups.

Question 3

seeds → mouse → owl Which animal is the predator of the mouse?

• A. mouse
• B. owl
• C. seeds

Question 4

How does living in a group help here: honeybees in a hive?

• A. they can catch animals much bigger than one wolf
• B. workers share jobs like collecting food and caring for young
• C. they share warmth in freezing winds
• D. it is hard for a predator to pick out one fish

Question 5

True or false? Living in a group has no downsides.

• A. True
• B. False

Question 6

Food chains: which statement is true?

• A. A top (apex) predator has no natural predators as an adult.
• B. Herbivores are predators.
• C. Producers eat consumers.
• D. A food chain can start with a lion.

Question 7

algae → tadpole → fish → heron What is the tadpole in this food chain?

• A. primary consumer
• B. secondary consumer
• C. producer
• D. tertiary consumer

Question 8

Geese fly in a V shape and take turns at the front. How does this help?

• A. It helps them see the ground.
• B. It keeps them dry.
• C. Birds behind save energy, and sharing the front spreads the hard work.
• D. It makes them fly slower.

Question 9

phytoplankton → krill → penguin → leopard seal Which animal is the prey of the leopard seal?

• A. leopard seal
• B. krill
• C. phytoplankton
• D. penguin

Question 10

How does living in a group help here: honeybees in a hive?

• A. it is hard for a predator to pick out one fish
• B. they can catch animals much bigger than one wolf
• C. workers share jobs like collecting food and caring for young
• D. adults protect the calves from lions

Question 11

True or false? All animals live in groups.

• A. True
• B. False

Question 12

Food chains: which statement is true?

• A. A food chain can start with a lion.
• B. Herbivores are predators.
• C. Plants are producers because they make their own food.
• D. Producers eat consumers.

Question 13

lettuce → slug → hedgehog → badger What is the lettuce in this food chain?

• A. producer
• B. primary consumer
• C. tertiary consumer
• D. secondary consumer

Question 14

Leafcutter ants cut leaves, carry them home and grow a fungus on them to eat. Why can a colony do this but one ant cannot?

• A. Fungus only grows near crowds.
• B. Leaves are only cut at night.
• C. Thousands of ants share the different jobs.
• D. One ant is too lazy.

Question 15

grass → zebra → lion Which animal is the prey of the lion?

• A. lion
• B. zebra
• C. grass

Question 16

How does living in a group help here: meerkats taking turns as lookouts?

• A. it is hard for a predator to pick out one fish
• B. adults protect the calves from lions
• C. one warns the others when a hawk is near
• D. they share warmth in freezing winds