BIOL1407 Chapter 29 and 31 Review

How do water enter the roots from the soil?

• diffusion
• osmosis
• transpiration
• active transport

Water vapor exits a plant leaf by

• the stomata

• the epidermis

• the palisade cells

• the spongy mesophyll

Most stomata are usually found in underside of leaves.  Why?

• conserve water
• get more CO2
• prevent infection
• none

Phloem is made from living cells called

• sieve tube elements
• vascular bundles
• paranchema
• collenchyma

The pores on  leaves are called

• stomata
• guard cells
• collenchyma
• phloem

Water travels through

• phloem
• xylem
• veins
• tubes

transpiration powers the movement of water 

• down a concentration gradient
• up a concentration gradient
• up & down concentration gradients
• all of the answers

An increase in wind or temperature will ________________ transpiration

• increase
• decrease
• no change
• none

location where substances enter the phloem

• source
• sink
• loci
• pit

Sink is any cell that _______.

• stores sugar

• makes sugar

• excretes sugar

• give sugar