PCS DCA 2 Grade 6 Science 24-25

What is a direct indicator that cellular respiration is taking place in an organism?

• A. The organism is growing in size.

• B. Oxygen is being consumed.

• C. Glucose is being produced.

• D. Water is being absorbed.

What role does transpiration play in the overall health and functioning of a plant?

• By providing energy for the plant's growth and development.

• By aiding in the exchange of gases necessary for photosynthesis and respiration.

• By enabling the movement of water and dissolved minerals from the roots to the leaves, supporting photosynthesis and respiration.

• By storing nutrients and water for future use.

Tags

NGSS.MS-LS2-3

What is the main difference between transpiration and respiration in plants?

• Transpiration involves the release of water vapor, while respiration involves the release of carbon dioxide.

• Transpiration is a process of water absorption, while respiration is a process of water release.

• Transpiration occurs in the roots, while respiration occurs in the leaves.

• Transpiration and respiration both involve the release of oxygen.

What is the main distinction in the way vascular and nonvascular plants manage nutrient and water distribution?

• Vascular plants utilize xylem and phloem for transport, whereas nonvascular plants depend on diffusion and osmosis.

• Nonvascular plants possess a more intricate root system compared to vascular plants.

• Vascular plants employ stomata for nutrient distribution, unlike nonvascular plants.

• Nonvascular plants use xylem and phloem, while vascular plants rely on diffusion and osmosis.

How do nonvascular plants primarily obtain nutrients?

• Through an extensive root network.

• By directly absorbing nutrients through their surfaces.

• Via specialized vascular structures.

• Through leaf stomata.

Tags

NGSS.MS-LS2-1

What is the main function of the xylem in vascular plants?

• Transporting nutrients from leaves to roots

• Facilitating gas exchange in leaves

• Conducting water and minerals from roots to leaves

• Anchoring the plant to the soil

Tags

NGSS.MS-LS2-3

How do vascular plants differ from nonvascular plants in their method of nutrient absorption?

• Vascular plants use roots to absorb nutrients, while nonvascular plants absorb nutrients through their leaves.

• Vascular plants absorb nutrients through their roots, whereas nonvascular plants absorb nutrients directly through their surfaces.

• Vascular plants do not require roots for nutrient absorption, while nonvascular plants depend on roots.

• Vascular plants store nutrients in their roots, while nonvascular plants lack a storage system.

What is the role of phloem in vascular plants?

• To transport water from the roots to other parts of the plant.

• To transport sugars and other nutrients from the leaves to other parts of the plant.

• To absorb water and nutrients from the soil.

• To exchange gases necessary for photosynthesis.

Tags

NGSS.MS-LS2-3

Which plant movement is a response to sunlight?

• All plants grow towards the sun.

• Sunflowers following the sun's movement across the sky.

• Climbing plants twining around a support.

• Roots extending further into the ground.

What adaptation allows sunflowers to efficiently capture sunlight throughout the day?

• Having a waxy coating on leaves

• Growing in clusters

• Orienting their flower heads to track the sun's movement

• Producing large seeds

Tags

NGSS.MS-LS1-6