Week 3

Which two cells form phloem tissue?

• sieve tube elements and companion cells

• phloem cells and tissue cells

• cross walls and lignin cells

• tube elements and sieve tissue cells

True or false:

Sieve tube cells have no nucleus.

• True

• False

In the __________ pathway, water moves from cell to cell via the plasmodesmata, while in the ___________ pathway, water moves via cell walls.

• transmembrane;

  symplast

• symplast; apoplast

• apoplast;

  symplast

• symplast;

  transmembrane

• transmembrane; apoplast

Answer explanation

Root hairs are extensions of which structure in the root?

• Xylem vessels

• Cortex

• Epidermis

• Phloem

• Endodermis

Vascular plant tissue includes all of the following cell types except

• vessel elements

• cambium cells

• sieve cells

• tracheids

• companion cells

All of the following cell types are correctly matched with their functions except

• sieve-tube member - translocation

• guard cell - regulation of transpiration

• mesophyll - photosynthesis

• companion cell - formation of secondary xylem and phloem

• vessel element - water transport

The ground meristem gives rise to

(select all possible answers)

• Cortex

• Pith

• Vascular Tissue

• Epidermis

• Endodermis

The dominant part of a plant body is a 2n sporophyte except in which group of plants?

• Ferns

• Bryophytes

• Gymnosperms

• Angiosperms

• Cycads

Which of these groups are the most basal extant vascular plant group?

• Cycads

• Ferns

• Bryophytes

• Conifers

• Lycophytes

All but ­­­­____________ are known in bryophyte taxa.

•  sporangia

• archegonia

• microphylls

• rhizoids

• apical meristems