Transports Concepts in Biology

Which of the following is NOT a characteristic of transport systems in plants and animals?

• A system of vessels in which substances are transported

• A heart to pump the fluid

• A suitable transport medium

• A driving mechanism to move the substances

The main driving force for the movement of water from the roots to the top of the plant is:

• the negative gravitational pull from Earth.

• the atmospheric pressure on roots.

• osmosis in the roots.

• the tension caused by the evaporation of water through the stomata.

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NGSS.HS-LS1-3

Which of the following is NOT a requirement for a successful transpiration stream?

• Adhesion of water cells to the xylem walls

• Cohesive forces between water molecules

• Active transport of water through xylem vessels

• Thick, lignified walls of the xylem tissue to withstand the pressure

Food dye was used in this experiment:

• to dye the water to trace its pathway through the plant.

• to create a pattern in the celery.

• to demonstrate the movement of sugars through the plant.

• to demonstrate that eosin is capable of moving through the plant.

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NGSS.MS-LS2-3

The attraction of water molecules to each other is called:

• adhesion

• cohesion

• attraction

• transpirational pull.

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NGSS.MS-ESS2-4

The term given to (i) the movement of the products of photosynthesis throughout the plant and (ii) the direction of movement is:

• (i) translocation and (ii) only one direction

• (i) transpiration and (ii) only one direction

• (i) transpiration and (ii) whichever direction is required

• (i) translocation and (ii) whichever direction is required

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following types of tissue are represented by the diagram below?

• Xylem

• Xylem and phloem

• Vascular bundle

• Phloem

The movement of substances in the phloem is caused by:

• the formation of high pressure areas at the sink and low pressure areas at the source.

• the movement of water in the xylem.

• the formation of high pressure areas at the source and low pressure areas at the sink.

• the formation of equal areas of pressure at both the source and the sink.

Which of the following best describes how a region of high pressure is formed in the phloem tissue?

• Water is actively pumped into the phloem tissue, which creates a dilute solution, which in turn causes sugars to move by diffusion into the phloem.

• Sugars are actively pumped into the phloem tissue, which creates a concentrated solution, which in turn causes water to move by osmosis into the phloem.

• Sugars move by diffusion into the phloem tissue, which creates a concentrated solution, which in turn causes water to be actively pumped into the phloem.

• Water moves by osmosis into the phloem tissue, which creates a dilute solution, which in turn causes sugars to be actively pumped into the phloem.

In an apple tree, it is expected that the sugars produced by the tree would flow from (i)____________ to (ii)__________________.

Choose the option that would correctly fill in the terms in the sentence above.

• (i) a leaf (ii) a growing apple

• (i) the trunk (ii) a leaf

• (i) the roots (ii) a growing shoot

• (i) a growing shoot (ii) a leaf

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