Flowers (McLean)

Question 1

Parts of the flower

Answer 1

Pistil (Stigma & Style), Stamen (Anther & Filament), Petals, Ovary, Ovule, Sepal, Nectary, Receptacle, Flower stalk/stem

Question 2

Stigma

Answer 2

Attracts pollen grains from the air from its sticky tip for reproduction to take place

Question 3

Style

Answer 3

Supports the stigma and connects it to the ovary, therefore assists fertilization by delivering sperm to egg

Question 4

Ovary

Answer 4

Prepares ovules for fertilization, protects developing zygotes, and develops them into seed-bearing fruit

Question 5

Petal

Answer 5

Attracts pollinators with its bright colors

Question 6

Anther

Answer 6

Produces and disperses pollen

Question 7

Filament

Answer 7

Carries nutrients to the anther for the development of the anther and pollen grains

Question 8

Sepal

Answer 8

Encloses and protects the developing reproductive structures

Question 9

Ovule

Answer 9

Forms the seeds of flowering plants

Question 10

Receptacle

Answer 10

Keeps the flower in an elevated position to attract insects

Question 11

Nectary

Answer 11

Produces nectar that attracts pollinators

Question 12

Pistil

Answer 12

Female reproductive organ (Stigma & style)

Question 13

Stamen

Answer 13

Male reproductive organ (Anther & Filament)

Question 14

Gamete

Answer 14

sex cell

Question 15

Pollination

Answer 15

The process of moving pollen from an anther to a stigma

Question 16

Wind pollinator

Answer 16

flowers have light colors and no smell, produce smaller and lighter grains that can be carried in the wind, stigma is feather/sticky and is hanging out petals, anthers are outside the flower

Question 17

Insect pollinator

Answer 17

flowers are brightly colored and have a strong smell, they produced large grains that are sticky & spiky so the pollinators carry them, has a small stigma deep in the petals, anthers are found deep inside the flower

Question 18

Pollen tube

Answer 18

Grows out of the pollen grain and into the stigma, and carries the pollen nucleus down into the egg cell

Question 19

How do pollen tubes grow?

Answer 19

enzymes from pollen digest the inside the stigma and form a tube down to the ovary

Question 20

Steps of a pollen tube

Answer 20

1.Pollen lands on the stigma
2.Enzymes begin to digest a pollen tube down the style
3.A pollen nucleus travels down the pollen tube
4.The pollen nucleus enters the ovule
5.The nucleus of the pollen and ovule fuse
6.This fusion forms a zygote in the ovule, we now cal; the ovule a seed

Question 21

Reproduction

Answer 21

The production of offspring by sexual or asexual processes

Question 22

Fertilization

Answer 22

The joining of sex cells

Question 23

What has seeds?

Answer 23

Plants a fruit

Question 24

similarities between flowers and fruits

Answer 24

both have seeds, they have ovaries, fruits contain sepals and stems, tomatoes have a style and stigma own the bottom and bananas have petals

Question 25

Parts of a seed

Answer 25

testa, cotyledon, epicotyl, radicle, micropyle

Question 26

Testa

Answer 26

the outer layer / protective coat

Question 27

Cotyledon

Answer 27

contains food to store to form embryonic seeds

Question 28

Epicotyl

Answer 28

Embryonic shoots

Question 29

Radicle

Answer 29

Embryonic root

Question 30

Micropyle

Answer 30

Small pore that allows passage of water

Question 31

What do seeds need to germinate

Answer 31

water, oxygen and warmth

Question 32

gymnosperms

Answer 32

non-flowering plants

Question 33

Angiosperm

Answer 33

flowering plants

Question 34

dispersal

Answer 34

moving seeds to new locations away from their parents

Question 35

Wind dispersal

Answer 35

wind blows seeds to new locations, but is dependent on weather, seeds are lighter and have a parachute-like build

Question 36

Animal dispersal

Answer 36

Animals carry seed and drop them in new locations, or eat and excrete them, seeds are adapted being being bright, having hooks, being small an not being able to be digested by intestines

Question 37

Explosion dispersal

Answer 37

Seeds explode / pop out since the heat from the sun dries the pods and causes them to explode

Question 38

Drop & Roll dispersal

Answer 38

Fruit falls from trees and rolls on the ground, is adapted by being spherical & heavy

Question 39

Water dispersal

Answer 39

Water carries seeds to new locations, seeds are adapted to be buoyant

Question 40

Magnification equation

Answer 40

magnification = size of formed image ÷ size of original image