Plant Movement

Question 1

Plant Movement

What are the 3 types of movements

Answer 1

Growth movements

Turgor movements

Taxic movements

Question 2

Plant Movement

Growth movements are stimulated ___ and ___

Answer 2

Internally and externally

Question 3

Plant Movement

What are the 4 internally stimulated growth movements

Answer 3

Nutations

Nodding movements

Contraction movements

Nastic movements

Question 4

Plant Movement

Nutations =

Answer 4

Stems spiral as they grow

Question 5

Plant Movement

Nodding movements =

Answer 5

Hypocotyl of bean plants nod left and reft to help it break through the soil

Question 6

Plant Movement

Contraction movements =

Answer 6

Contractile roots pull bulb or corm into soil

Question 7

Plant Movement

Nastic movements =

Answer 7

Leaves, petals, sepals flap as layers grow at different rates

Question 8

Plant Movement

Externally stimulated movement is also known as ___ and occur in __ phases

Answer 8

Tropisms

3 Phases

Question 9

Plant Movement

What are the 3 phases of tropisms

Answer 9

Perception phase

Transduction phase

Asymmetric growth

Question 10

Plant Movement

Perception phase =

Answer 10

Plant contacts stimulus asymmetrically

Question 11

Plant Movement

Transduction phase =

Answer 11

Growth hormones become unevenly distributed

Question 12

Plant Movement

Asymmetric growth =

Answer 12

Cells on one side extend/grow faster

Question 13

Plant Movement

Positive tropism =

Negative tropism =

Answer 13

Positive = towards stimulus

Negative = away from stimulus

Question 14

Plant Movement

What are the 3 tropisms

Answer 14

Phototropism

Gravitropism

Thigmotropism

Question 15

Plant Movement

Phototropism =

Answer 15

Grows towards light, auxins moves away from light

Question 16

Plant Movement

Gravitropism =

Answer 16

Growth relative to gravity, starch grains in roots

Question 17

Plant Movement

Thigmotropism =

Answer 17

Growth relative to contact

Contact decreases growth

Question 18

Plant Movement

Turgor movements are movements relative to

___ are responsible

Answer 18

Gain and loss of water

Pulvini structures

Question 19

Plant Movement

Contact with pulvini structures encourages

Water follows

Answer 19

Potassium ions to be released, and ions diffuse

from one parenchyma cell to another

Question 20

Plant Movement

Turgor movements are closely associated with (3)

Answer 20

Circadian rhythm

Solar tracking

Water retention

Question 21

Plant Movement

Circadian rhythm =

Turgor movements help with (2)

Answer 21

Timing of life’s events

Opening / closing of leaves at day / night

Opening of flowers

Question 22

Plant Movement

Solar tracking and Turgor movements

Pulvini cells control

Answer 22

Positions of head and leaves of sunflowers

Question 23

Plant Movement

Water conversation and turgor movements

Bulliform cells…

Answer 23

Deflate to close leaf

Question 24

Plant Movement

Taxic movement is

Answer 24

The use of cilia or flagella for movement

Question 25

Plant Movement

Phototaxis =

Chemotaxis =

Answer 25

Movement relative to light

Movement relative to chemical