Plant Structures and Tropisms

This is a survival technique where an organism, usually a plant, is capable of directed physical movement or growth in response to a specific stimulus; such as light, gravity, water, or contact.What is the survival technique described above that is used by plants?

• locomotion
• migration
• pseudopodia
• tropism

The days are getting shorter and colder. These trees are responding to the change. Their leaves change color and will soon fall off. Losing leaves during the winter is the response to the external environment called

• tropism

• hibernation

• hydrotropism

• phototropism

Tags

NGSS.MS-LS1-5

Mina observed the flowers of a plant called a moon flower. These plants have flowers that open and close. She wrote what she saw in a table. Using the information in the chart, what makes the flowers open and close?

• gravity
• heat
• light
• water

This plant needs to grow high up in the canopy of the rainforest. It needs support as it moves up the stems and branches of larger trees. The tendrils here know when to cling to their support. This response by the climbing plant is called

• gravitropism
• hydrotropism
• phototropism
• thigmotropism

Many flowering plants have very colorful petals like the lily seen here. What is the main purpose of these colorful petals?

• to protect the plant from predators
• to capture sunlight for photosynthesis
• to distract birds from eating the seeds
• to attract insects that pollinate the flower

Tags

NGSS.MS-LS1-4

Identify structure G on the flower below. 

• Petals
• Stamen
• Pistil
• Stem

Identify structure J on the flower below. 

• Petals
• Stamen
• Pistil
• Stem

Identify which part of the flower is responsible for making pollen?

• A
• H
• K
• N

The place in plants where photosynthesis, respiration, and transpiration occurs.

• stems
• leaves
• roots
• flowers

Tags

NGSS.MS-LS1-6