Plant System Review

The diagram illustrates a seed germinating. Many forces, including responses to moisture, light, temperature, and gravity are at work in this process.

Which of the following correctly describes two of the seedling's responses to stimuli?

• I is negative to light, and III is positive to gravity.

• IV is negative to temperature, and II is negative to gravity.

• II is negative to light, and III is positive to gravity..

• II is positive to gravity, and IV is positive to moisture.

Students observed a plant left by a window over several days. The plant was watered daily. After three days, the plant began to grow towards the window as shown in the picture. Which of the following best explains the student’s observations?

• Heat from the Sun caused the plant to grow towards the window.

• The plant is leaning towards the window to get fresh air.

• The plant is responding to the stimulus of sunlight.

• The plant is responding to water in the air and growing towards it.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Leaves are composed of vascular tissue that brings water in so that ground tissue can conduct photosynthesis. Based on this information, what level of organization describes leaves?

• Tissue

• Organ

• Organ system

• Organism

Trees that grow in a forest tend to grow very tall, with few branches. The same species of tree grown in an open area tends to grow shorter and wider, with many branches. The stimulus responsible for these different growth patterns is the amount of -

• wind striking the tree

• light reaching the tree

• nutrients in the soil

• water in the ground

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

What are the xylem and the phloem of a plant are examples of?

• organs

• tissues

• cells

• molecules

These plants transport food and water through the xylem and phloem.

• vascular

• nonvascular

Tags

NGSS.MS-LS4-2

What structure is shown in the image?

• Xylem

• Phloem

• Stoma

Tags

NGSS.MS-LS1-2

Which plant system is responsible for moving nutrients throughout the plant?

• phloem system

• vascular system

• root system

• shoots system

Tags

NGSS.MS-LS2-3

A bean plant grown on Earth and a bean plant grown aboard the International Space Station are MOST likely to differ in the —

• color of their leaves

• shape of their root systems

• nutrients they need to survive

• way they respond to direct light

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Frank was out of town for a few days and when he returned, he noticed that his plant was very wilted. He watered the plant and put it in the sun. A few hours later, he noticed that it the leaves on the plant had perked up and looked fine again. The image shows the plants before and after the water and exposure to sunlight. Why did this occur?

• The plants needed the water to help the leaves undergo photosynthesis.

• The plants needed to be put in the sun so the sunlight could attract the plant.

• The plants needed to be outside so it could be affected by the gravity of the Earth.

• The plants needed the water so the cells could expand and keep the plant upright.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6