Lecture 12 + 13: Seed Morphology + Respiration and Germination

Question 1

Progeny is a genetic copy of parent, any gene differences is a rare mutation

Answer 1

Asexual reproduction (vegetative propagation)

Question 2

Vegetative prop results identical _______, but possibly different_______ based on environment

Answer 2

geneotype; phenotype

Question 3

Results in genetically different progeny from parents and other offspring; usually results in seed formation; variable offspring allow for better adaptations for environment

Answer 3

Sexual reproduction (sexual reproduction in plants are probably inbred and genetically identical to parents)

Question 4

4 external conditions required for germination:

Answer 4

Water
Oxygen
Warmth
Light

Question 5

Requires light for germination

Answer 5

positively photoblastic

Question 6

General temperature preference for plants

Answer 6

50-70 F because fast-moving molecules encourage respiration

Question 7

Breakdown of nutrient reserves to form energy

Answer 7

Respiration

Question 8

Stored energy; used in apical meristems of embryo to fuel cell division

Answer 8

ATP

Question 9

C6H12O6

Answer 9

Glucose

Question 10

Inputs of respiration

Answer 10

Glucose and Oxygen

Question 11

Outputs of respiration

Answer 11

Carbon dioxide and water

Question 12

_______ become glycerol and fatty acids–>pyruvate–> ATP

Answer 12

Lipids

Question 13

Glucose is broken in half to form 3-carbon compound pyruvate

Answer 13

Glycolysis

Question 14

Impermeability of seed coat or pericarp to H2O or O2; germination inhibitors in seed coat

Answer 14

Barriers to germination in protective covering

Question 15

Barriers to germination in embryo

Answer 15

physiological immaturity
physiological requirements (dehydration, light, etc)
deep dormancy in temperate plants