Plant Structures

What structure transports sugar throughout the plant

• Phloem

• Stomata

• Guard cells

• Cambium

Answer explanation

The phloem is the vascular tissue responsible for transporting sugars produced in the leaves to other parts of the plant. This process is essential for plant growth and energy distribution, making phloem the correct answer.

Tags

NGSS.MS-LS2-3

Which structure transports water throughout the plant

• Phloem

• Xylem

• Stomata

• Cambium

Answer explanation

The xylem is the structure responsible for transporting water from the roots to the rest of the plant. In contrast, phloem transports nutrients, stomata are pores for gas exchange, and cambium is involved in growth.

Which structure contains small openings that allow for gas exchange

• Xylem

• Phloem

• Cambium

• Stomata

Answer explanation

Stomata are small openings on the surface of leaves that facilitate gas exchange, allowing carbon dioxide in and oxygen out, which is essential for photosynthesis and respiration.

What part of the plant is responsible for making food (main location for photosynthesis)?

• roots

• flower

• stem

• leaves

Answer explanation

The leaves are the main site for photosynthesis in plants. They contain chlorophyll, which captures sunlight to convert carbon dioxide and water into glucose, the food for the plant.

Tags

NGSS.MS-LS1-6

Which of these plant structures supports a plant so it does not fall over?

• Seed

• Root

• Leave

• Flower

Answer explanation

The root is the plant structure that anchors it to the soil, providing stability and support, preventing the plant from falling over. Other options like seed, leaf, and flower do not serve this purpose.

What is the function of the roots of a plant?

• Absorb water and minerals

• Capture sunlight for energy

• Support the plant above ground

• Create food for the plant

Answer explanation

The primary function of plant roots is to absorb water and minerals from the soil, which are essential for the plant's growth and development. Other options, like capturing sunlight or creating food, are functions of leaves.

What is the function of the flower part of a plant?

• help the plant reproduce

• transport water to the leaves

• make food for the plant

• provide support for the plant

Answer explanation

The primary function of the flower part of a plant is to help the plant reproduce. Flowers contain reproductive structures that facilitate pollination and the production of seeds.

Tags

NGSS.MS-LS1-4

Stomata are made of specialized cells called ______ which surround a tiny pore/opening

• stoma

• guard cells

• dermal cells

• diffusion channels

Answer explanation

Stomata are surrounded by guard cells, which regulate the opening and closing of the pore. This allows for gas exchange while minimizing water loss, making guard cells the correct answer.

Tags

NGSS.MS-LS1-2

The diffusion of water vapor out of a leaf

• transportation

• transformation

• transpiration

• translocation

Answer explanation

The diffusion of water vapor out of a leaf is called transpiration. This process is essential for water regulation in plants and helps in nutrient transport, distinguishing it from transportation, transformation, and translocation.

Tags

NGSS.MS-LS2-1

Why might some plants that grow on the shady rain forest floor have large leaves?

• to stay safe from predators

• to attract different animals

• to survive harsh winters with heavy snowfall

• to take in as much sunlight as possible

Answer explanation

Plants on the shady rain forest floor have large leaves to maximize sunlight absorption. In low light conditions, larger leaves increase the surface area for photosynthesis, helping them thrive in their environment.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1