5b

Question 1

define alternation of generations

Answer 1

Subsequent generations alternate between haploid (n) and diploid (2n) organisms.

Question 2

define (gametophyte generation)

Answer 2

capable of creating gametes

Question 3

define (sporophyte generation)

Answer 3

capable of creating haploid (n) spores by meiosis

Question 4

define Sepals

Answer 4

Protect the flower bud

Question 5

define petals

Answer 5

Brightly coloured to attract pollinators like bees

Question 6

define androecium

Answer 6

Name for the anther and filament (male)

Question 7

define gynoecium

Answer 7

Collective name for stigma, style and ovary (female)

Question 8

define filament

Answer 8

Structural base of the anther

Question 9

define anther

Answer 9

Produce the pollen

Question 10

define stigma

Answer 10

Entry site for the pollen (female)

Question 11

define style

Answer 11

Tissue holding up the stigma as well as the track leading the the ovaries

Question 12

define ovary

Answer 12

Contains the Ovules

Question 13

name seed dipersal methods

Answer 13

Consumption (fruit)
Stuck on fur (bindi)
Wind (dandelion)
Water (coconut)

Question 14

Describe how fruits and seeds develop from ovaries and ovules

Answer 14

The anther in the flowers produce pollen that is carried to the stigma via wind or pollinators. Double fertilisation is the process of germination (pollination) the pollen goes down the style into the ovule. One sperm fuses with the egg cell to create the embryo(2n), the other fusses with the central cell to form a triploid cell (endosperm) which provide nutrition for the germinating seed

Question 15

define Hypogeal germination

Answer 15

present in monocot plants bellow soil
Root emerges first to gather water
Coleoptile (sheath used to pierce soil
True leaves emerge inside coleoptile

Question 16

define Epigeal germination

Answer 16

present in dicot plants above soil
Root emerges to gather water
Hypocotyl hook pieces spill first
Cotyledons use energy store

Question 17

List the six major groups of plant hormones

Answer 17

auxins, gibberellins, cytokinins, ethylene, abscisic acid, and florigens

Question 18

describe Auxins

Answer 18

hormone which aids fruit development, inhibits cell growth in roots and stimulates bending growth for shoots towards light

Question 19

describe Gibberellins

Answer 19

hormone which aids, stem elongation and processes like budding, flowing, fruit production, seed germination

Question 20

describe Cytokines

Answer 20

hormone which inhibits lateral branch formation (roots) and stimulates branch formation (shoots)

Question 21

describe Ethylene

Answer 21

(stress hormone) stimulates ripening of fruit

Question 22

Abscisic acid

Answer 22

hormone which Helps with adaptive responses (inhibits root growth, stomatal closure

Question 23

describe Foreigners

Answer 23

hormone which controls flowering timing

Question 24

what controls flowering patterns

Answer 24

Photoperiodism controls the change of flowering in response to the environment based on the uninterrupted darkness. Red Light is transformed into active photoperiodism; these transform back into inactive during the dark; the active form needs to reach a certain threshold (low) the plant will flower during the night

Question 25

what is Photoperiodism

Answer 25

Photoperiodism is a pigment which absorbs either far red light or red light.

Question 26

what types of flowering patterns are there

Answer 26

None - (daylight neutral)
Not dependent on light to flower
Long - day
Dependent on long light source (autumn)
Short - day
Flower when short light (spring)