Plant Growth and Ecology Concepts

What is ecology?

• The study of animals

• The study of how living things interact with their environment

• The study of plants

• The study of rocks

What do population ecologists study?

• How different types of plants interact

• How plants affect their environment

• How individual plants interact with their environment

• How plants and animals interact

What is tropism?

• A type of plant

• A chemical in plants

• Plant growth in response to a stimulus

• How plants make food

Which hormone helps plants grow towards light or away from shade?

• Testosterone

• Estrogen

• Auxin

• Insulin

What causes a plant stem to bend towards light?

• The shaded side of the stem grows faster.

• The sunny side of the stem grows faster.

• The plant needs to find water.

• The plant is trying to hide from the sun.

How does auxin affect root growth?

• More auxin makes root cells grow longer.

• More auxin makes root cells grow shorter.

• Auxin makes roots grow towards light.

• Auxin makes roots grow sideways.

How do climbing plants wrap their tendrils around a stick?

• The cells touching the stick grow longer.

• The cells not touching the stick grow longer.

• The tendril pulls itself around the stick.

• The stick pushes the tendril around.

Which type of plant flowers when the nights are longer than the days?

• Long-day plants

• Day-neutral plants

• Short-day plants

• Tropical plants