Biol 191 - Exam 3 Questions with correct
Short Answers
List and describe four classes of plant hormones. (Ch 31) - verified answers; 1) Auxin
- produced in shoot tips and helps cells elongate
2) Cytokinins
- stimulate cytokinesis (cell division) by working
with auxin
3) Abscisic acid
- contributes to seed dormancy and drought tolerance
4) Ethylene
- associated with apoptosis, programmed destruction of cells and triggers ripening
List and describe four stages/processes within a typical animal excretory system (Ch 32) -
verified answers; 1) Filtration
- squeezing blood under pressure
2) Reabsorption
- reclaiming valuable solutes from the filtrate to the body fluids
3) Secretion
- adding nonessential or toxic solutes wastes from the body fluids to the filtrate
Short Answers
List and describe four classes of plant hormones. (Ch 31) - verified answers; 1) Auxin
- produced in shoot tips and helps cells elongate
2) Cytokinins
- stimulate cytokinesis (cell division) by working
with auxin
3) Abscisic acid
- contributes to seed dormancy and drought tolerance
4) Ethylene
- associated with apoptosis, programmed destruction of cells and triggers ripening
List and describe four stages/processes within a typical animal excretory system (Ch 32) -
verified answers; 1) Filtration
- squeezing blood under pressure
2) Reabsorption
- reclaiming valuable solutes from the filtrate to the body fluids
3) Secretion
- adding nonessential or toxic solutes wastes from the body fluids to the filtrate
