IB biology 9.3

What is meristematic tissue AND where is it found?

• undifferentiated tissue; throughout entire plant.
• undifferentiated tissue; in apical and lateral meristems.
• differentiated tissue, throughout plant
• differentiated tissue; in apical and lateral meristems

Tags

NGSS.HS-LS1-4

What best describes an efflux pump with a correct example?

• Pumps material out of a cell; proton pump involved in cell wall acidification
• pumps material into a cell; proton pump involved in cell wall acidification
• Pumps material into a cell; formation of cellulose cell wall
• Pumps material out of a cell; electron pump involved in thylakoid membrane.

Cells on which side of the stem will undergo elongation?

• dark side
• light side
• both sides
• in the middle

Tags

NGSS.MS-LS1-5

Which of the following are involved in phototrophism? I. auxinII. proton pumpsIII. expansinsIV. sunlight

• I and II only
• I, II and III only
• II and III only
• I, II, III and IV

Tags

NGSS.MS-LS1-5

What process can cause cells to elongate?

• The movement of protons into the cell wall; loosening of the cellulose; efflux of water
• The movement of protons into the cell wall; loosening of the cellulose; influx of water
• The movement of protons into the cytoplasm; loosening of the cell wall; influx of water
• The movement of protons into the nucleus; activating genes to loosen the cell wall; influx of water

Micropropagation can be used to:I. Produce many clones of new varieties of plants II. Re-populate endangered plant speciesIII. Protect plants from viruses and bacteria found in the natural environment

• I only
• I and II only
• II and III only
• I, II and III

Tags

NGSS.HS-LS2-7

Which processes best describe phototrophism?

• Plants growing towards light; cells on light side elongating
• Plants growing away from light; cells on light side elongating
• Plants growing toward light; cells on the dark side elongating
• Plants growing towards light, cells on the light and dark side elongating

Tags

NGSS.MS-LS1-5

Why is it important for the cell wall to loosen during cell elongation?

• To activate proton pumps
• To allow active transport of water
• To allow auxin to be released
• To allow osmosis to occur

What best describes a group of undifferentiated plant cells produced by micropropagation?

• callus
• embryoid
• plant

Tags

NGSS.HS-LS1-4

Which of the following DOES NOT require activation of gene expression (transcription and translation)?

• activation of proton pumps
• Production of auxin
• influx of water
• production of expansins

Tags

NGSS.HS-LS1-1