Test 2-Transport System in Vascular Plants and Genetics

What are plants that contain xylem and phloem called?

• Vascular plants

• Non-vascular plants

• Bryophytes

• Algae

A scientist observes water moving from the soil into the root, then into the xylem, and finally up the stem to the leaves, even against gravity. The best explanation for this phenomenon is:

• the positive pressure created by the continuous production of sugar in the root.

• the active pumping of water molecules by the cells of the stem.

• the creation of a cohesive, unbroken water column pulled upward by the negative pressure of transpiration.

• the simple force of diffusion across all cell membranes from high to low concentration.

Which structure in a vascular plant is primarily responsible for transporting water and dissolved minerals from the roots up to the leaves?

• Phloem

• Xylem

• Epidermis

• Stomata

What term describes the process of water movement through a plant and its evaporation from aerial parts, such as leaves?

• Photosynthesis

• Translocation

• Transpiration

• Respiration

The main difference between monocots and dicots lies in the number of _____ in their seed.

• coats

• pores

• leaves

• cotyledons

What is the fundamental difference in the arrangement of vascular bundles between a typical monocot stem and a typical dicot stem?

• Monocots have no vascular bundles, while dicots have them in a circle.

• Monocots have scattered vascular bundles, while dicots have them arranged in a ring.

• Monocots have xylem on the outside, while dicots have phloem on the outside.

• Monocots have a vascular cambium, while dicots do not.

The main function of the root is:

• support and transport.

• photosynthesis and gas exchange.

• reproduction and storage.

• anchorage and absorption of water and minerals.

Which gas enters the leaf through the stomata for use in photosynthesis?

• Oxygen (O₂)

• Nitrogen (N₂)

• Carbon Dioxide (CO₂)

• Water Vapor (H₂O)

Which type of vascular plant produces seeds enclosed within an ovary (fruit)?

• Pteridophytes (Ferns)

• Gymnosperms (Conifers)

• Bryophytes (Mosses)

• Angiosperms (Flowering plants)

Which is an example of a dicot plant?

• Grass

• Lily

• Peanut

• Wheat