Angiosperm Plants

Question 0

Short day plants

Answer 0

High Pr to flower, low Pfr

Question 1

Photochromes

Answer 1

Pr - produces slowly in the dark

Pfr- produces quickly in the daylight; but in smaller amounts present

Question 2

Long day plants

Answer 2

High Pfr to flower, low Pr

Question 3

What is the role of gibberellin?

Answer 3

To stimulate production of amylase

Question 4

What does amylase do?

Answer 4

Catalyses the breakdown of starch into maltose

Question 5

What does the maltose then go on and do?

Answer 5

Diffuses into embryo for energy release and growth

Question 6

What are the three factors required for germination?

Answer 6

Water, heat, and oxygen

Question 7

What is water’a role in germination?

Answer 7

Water is needed to rehydrate the cells of the seed, to break the seed coat, and to grow shoot and root

Question 8

What is heat’s role in germination?

Answer 8

Regulate enzymatic activity. Extreme heats can cause the seed to go dormant

Question 9

What is oxygens role in germination?

Answer 9

Oxygen is needed for cellular respiration until the plant is able to preform photosynthesis

Question 10

Pollination

Answer 10

The process in which pollen is transferred from the anther to the stigma

Question 11

Fertilization

Answer 11

Fusion of make and female gametes inside the ovule to form a zygote

Question 12

Seed dispersal

Answer 12

The movement or transport of seeds or fruits away from the part

Question 13

Active translocation

Answer 13

Requires energy; when the phloem tissue takes sugars and Amino acids from the leaves, stems, and storage units to the roots and fruits

Question 14

What is an example of an adaptation of xerophytes?

Answer 14

Leaves on cactus are spikes

Question 15

How does light effect rate of transpiration?

Answer 15

Increases b/c stomata is open in light

Question 16

How does humidity effect rate of transpiration?

Answer 16

Decreases; messes up concentration gradient b/c too much water vapor pressure outside of lead

Question 17

How does heat effect transpiration?

Answer 17

Raises the rate of transpiration because it increases evaporation

Question 18

How does the wind effect transpiration?

Answer 18

Increases b/c it moves humidity away from the plant leaves

Question 19

Abscisic acid

Answer 19

Causes the closing of stomata in plants

Question 20

Transpiration stream

Answer 20

Occurs in the xylem vessels and is the pathway for rather to flow up the plant

Question 21

Evaporation’s role in transpiration of water

Answer 21

The more evaporation, the lower the pressure which sucks the water up the stream

Question 22

Transpiration

Answer 22

Loss of water vapor from the leaves and stems of the plants

Question 23

How do terrestrial plants support themselves?

Answer 23

Thickens cellulose, cell turgor, and lignified xylem

Question 24

How are mineral ions absorbed by the roots?

Answer 24

Active transport

Question 25

Tropism

Answer 25

The plants directional movements due to environmental factors

Question 26

Auxins

Answer 26

Help wih the growth of the plant by going to the shaded side and helping it grow to the light

Question 27

Apical meristems

Answer 27

Allows for roots to grow longer and stem to grow taller

Question 28

Lateral meristems

Answer 28

Allow for expansion in the diameter of stem and roots for more xylems and phloems

Question 29

Meristem

Answer 29

Tissue that allows for continual growth and the formation of new organs

Question 30

Upper epidermis

Answer 30

Promotes water conservation

Question 31

Palisade mesopyll

Answer 31

Photosynthetic material where most light hits and has lots of chloroplasts

Question 32

Vascular bundles

Answer 32

Contain phloem and xylem that transport water and other products

Question 33

Spongy mesopyll

Answer 33

Gas exchange and explains why it is close to the stoma