Transport in plants 1

Transport in plants 1

Multiple Choice

Which of these is not a reason that multicellular plants need transport systems?

• To meet their metabolic demands

• Plants can grow to be very large

• A a whole, plants have a relatively small SA:vol

• To coordinate an immune resposne

Multiple Choice

What area of a didcot shows this arrangement of vascular bundles?

• Stem

• Root

• Leaves

• Petals

Multiple Choice

Which of the following images shows the arrangement of the vascular bundle in the root of a herbaceous plant?

Multiple Choice

Why are vascular bundles arranged around the edge in the stem?

• To give a shorter diffusion distance

• To give strength and support

• To allow growth

• To leave space for sugars to travel up the middle of the stem

Multiple Choice

True or false.

Xylem tissue are largely non-living

• True

• Flase

Multiple Choice

Which of the following is not a function of xylem vessels?

• To help support the plant

• To transport water

• To transport sugars

• To transport mineral ions

Multiple Select

Which of the following tissues are associated with xylem?

• Xylem companion cells

• Xylem parenchyma

• Xylem fibres

• Xylem bianova

Multiple Choice

What is the role of xylem parenchyma?

• To store food and tannin deposits, which protects from herbivore attack

• To contain salts which are then transported in the xylem

• To allow exchange of substances between the xylem and the phloem

• To give additional support to the plant

Multiple Choice

What is the role of xylem fibres?

• To transport water

• To wrap around the xylem to prevent them from leaking

• Provide extra strength to the plant

• To fill in the space between the xylem and the phloem

Multiple Choice

Which of these substances strengthens the xylem?

• Chitin

• Lignin

• Cellulose

• Keratin

Multiple Choice

True or false.

Phloem are living tissue

• True

• False

Multiple Select

Which of the following are structures relating to the phloem?

• Sieve tube elements

• Sieve plates

• Companion cells

• Phloem sap

Multiple Choice

What is the role of the companion cell?

• To give structural support to the phloem vessels

• To connect the phloem vessels to the xylem vessels

• Their function is unknown

• To act as "life support systems" for phloem cells which have lost most of their normal cell functions

Multiple Select

Which of the following statements are true

• Both xylem and phloem are made up of non-living tissue

• Both xylem and phloem allow flow of materials both up and down the plant

• Both xylem and phloem have no nucleus

• Both xylem and phloem are formed of many cells joined end to end

Fill in the Blank

Which structure of the leaf tissue does the majority of water evaporation occur through?

Multiple Choice

Which is the correct equation for photosynthesis?

• carbon dioxide + light -> oxygen + water

• carbon dioxide + water -> oxygen + glucose

• light + water -> energy + glucose

• oxygen + water -> glucose + carbon dioxide

Multiple Select

Which of the following are characteristic features of good gas exchange surfaces?

• Small surface area to volume ratio

• Large diffusion gradient maintained

• Thin surface layer

Fill in the Blank

By what process will water move from the high water potential in the soil, to the lower water potential in the root hair cells?

Multiple Choice

What does the water move through in the symplast pathway?

• The cell walls

• The intercellular spaces

• The cytoplasm

• The vacuole

Multiple Choice

By what process does the water move from one cell to another in the symplast pathway between the root hair cell and the xylem?

• Mass transport

• Diffusion

• Osmosis

• Active transport

Multiple Select

What does the water move through in the apoplast pathway?

• The cell walls

• The intercellular spaces

• The cytoplasm

• The vacuole

Fill in the Blank

Name the pathway represented by diagram x

Fill in the Blank

Name the pathway represented by diagram y

Multiple Choice

The following statements refer to the movement of water from the cortex of the root into the xylem.Which of the following statements is / are true?

Statement 1: Most of the water moves across the root cortex by the apoplast pathway.

Statement 2:At the endodermis water has to enter the symplast pathway.

Statement 3:Casparian strips in the endodermis contain the chemical lignin.

• 1, 2, and 3

• Only 1 and 2

• Only 2 and 3

• Only 1

Fill in the Blank

Water can follow different pathways from the epidermis to the xylem in the root.

In the apoplast pathway, water passes between the cells and through the _ _ _ _ .

In the symplast pathway, water enters the cell cytoplasm by osmosis and passes from cell to cell via specialised cell junctions called _ _ _ _ .

At the _ _ _ _ layer, water passing between the cells must enter the symplast pathway because passage between the cells is blocked by the _ _ _ _.