theme 5

Question 1

know these: auxin promote

Answer 1

growth, important for cell division, promote elongation of cells, govern growth response to lighr and gravity

Question 2

gibberllins

Answer 2

stimulate growth, including the elongation of stems

Question 3

cytokinins

Answer 3

enhance growth and retard aging

Question 4

ethylene

Answer 4

gaseous hormone, regulates a range of responses, including senscene

Question 5

brassinosteroids

Answer 5

regulate plant growth and responses

Question 6

ABA

Answer 6

suppresses growth and influences responses to environmental stress

Question 7

jasmonates

Answer 7

regulate growth and have roles in defence

Question 8

auxins are mainly

Answer 8

indoleacetic acid

Question 9

auxins are synthesized primiarly in

Answer 9

shoot paical meristem and young stems and leaves

Question 10

blue light receptors

Answer 10

trigger auxin transport, auxin triggers driffential cell elongation as main hormone

Question 11

effects of gibberellin

Answer 11

bolting, development of a flowering stem.
fruit enlargement.

Question 12

effects of gibberellin

Answer 12

bolting, development of a flowering stem.
fruit enlargement.

Question 13

how to attract insect alliles

Answer 13

volatiles induce comppounds in undamaged plants that make less palatable, attracting predatory insects that feeed on the caterpullars or parastizes the eggs

Question 14

perfect flower imp

Answer 14

bisexual flower, both stamens and carpels

Question 15

imperfect flower imp

Answer 15

stamens or carpels, not both

Question 16

pollen lands

Answer 16

and germinate, grows towards ovule, important step for successful reproduction

Question 17

embryonic sporophyte

Answer 17

develops inside a see

Question 18

q on exam, self incompatibility

Answer 18

ability of plant to reject is own pollen, similar alleles rejected, different allele accepted

Question 19

q on exam, water flows from

Answer 19

xylem to phloem

Question 20

imp: 2examples of symbiosis

Answer 20

plants and nitrate filterizers, micrornizzae and roots for phosphorus

Question 21

what are primary aspects of the process used by a tall tree to move water to the leaves at the top of the tree?

a-cohesion alone
b- cohesion action and pumps
c- evaporations (transpiration) and pumps
d- capillary action and positive pressure from roots
e- evaporation (transpiration) and cohesion

Answer 21

e

Question 22

which of the following organelles or structures is/are absent in sieve tubes

a-plastids
b-plasma membrane
c-mitochondira
d-rough ER
e-B and D

Answer 22

D

Question 23

how would water flow if the water potential of surrounding soil is higher than in living root epidermal cells?
a-water would enter the root cells, making them turgid
b-water would leave the root cell, making them flaccid
c- water would leave the root cells, making them turgid
d- water would enter the root cells, making them flaccid
e- no net movement of water would occur

Answer 23

a

Question 24

animaks: dioecious / gonochoristic

Answer 24

2 sexes in speparate individualds

Question 25

animals: monoecious/hermaprodite

Answer 25

both sexes produces both egg+sperm at same time

Question 26

acrosome vesicles

Answer 26

release enzymes that help digest outer lsyer of egg

Question 27

oviparous

Answer 27

reptiles, insects, egg-bearing, outside of mother

Question 28

viviparous

Answer 28

most mammals, embryo retained inside mother

Question 29

ovovivparous

Answer 29

fish, lizards, sharks, retain fertilized eggs in body, eggs hatch in mother

Question 30

ontogeny

Answer 30

fertilization, cleavage, gastrulation, organogenesis, metamorphosis

Question 31

gastrulation

Answer 31

formuation of ecto/meso/endoderm
gut/mouth/anus