9.3 Plant

Question 1

maristem

Answer 1

tissues containing totipotent/undifferentiated cells capable of indeterminate growth

Question 2

node

Answer 2

point in plant stem at which 1 or more leaves attach

Question 3

tropism

Answer 3

directional response in plant to external stimilus

Question 4

phototropism

Answer 4

positive tropism in plant stem (grows toward the light) and negative tropism in plant roots (grows away from the light) controlled byu auxin

Question 5

shoot

Answer 5

stem together with the leaves

Question 6

shoot apex

Answer 6

very top of shoot where shoot apical meristem located

Question 7

pollination

Answer 7

pollen from anther is transferred to stigma of the flower

Question 8

self pollination

Answer 8

pollen from anther of the same plant falls on own stigma (less genetic variation)

Question 9

cross pollination

Answer 9

pollen from anther of one plant carried to stigma of different plant (increase genetic variation-takes longer to spread pollen)

Question 10

fertilization

Answer 10

fusion of haploid nuclei (male pollen grain fuses with female ovule to produce diploid zygote)

Question 11

seed dispersal

Answer 11

moved away from parent plant to reduce competition for resources in various ways (animal, H20, wind, fruit)

Question 12

photperiodism

Answer 12

plants response to length of night

Question 13

germination

Answer 13

process where seeds begin to sprout

Question 14

apical maristem

Answer 14

tip of shoot/root allows to lengthen (cell elongation and mitosis)

Question 15

auxin

Answer 15

changes patterns of gene expression in order to promote phototropism and apical growth in plants