Reproduction in Plants

Question 1

What is sexual reproduction

Answer 1

2 parents
offspring are genetically non identical to parents and each other
involves fusion of gametes

Question 2

What is asexual reproduction

Answer 2

1 parent
offspring are genetically identical to parents and each other
no fusion of gametes

Question 3

Example of an organism that sexually reproduces

Answer 3

Animal: Humans
Plant: Flowering plants e.g. rose

Question 4

Example of an organism that asexually reproduces

Answer 4

Animal: sea stars
Plant: Strawberry, spider plant

Question 5

What is fertilisation?

Answer 5

The fusion of a male and female gamete that produces a zygote that cell divides into an embryo

Question 6

Insect pollinated plants adaptations - petals

Answer 6

Large, brightly coloured

Question 7

Insect pollinated plants adaptations - scent

Answer 7

Strong scent

Question 8

Insect pollinated plants adaptations - no. of pollen grains

Answer 8

moderate

Question 9

Insect pollinated plants adaptations - pollen grains

Answer 9

large, sticky, spikey to stick insects

Question 10

Insect pollinated plants adaptations - anthers

Answer 10

Inside flower and brush against insects

Question 11

Insect pollinated plants adaptations - stigma

Answer 11

sticky so pollen grains stick to it

Question 12

Male part of plant

Answer 12

Anther and filament

Question 13

Female part of plant

Answer 13

Carpel = stigma, style, ovary

Question 14

Where is pollen (male gamete) produced?

Answer 14

Anther

Question 15

Where is ovum (female gamete) produced?

Answer 15

ovary, stored in ovule

Question 16

Wind pollinated plants adaptations - Petals

Answer 16

dull, small

Question 17

Wind pollinated plants adaptations - scent

Answer 17

none

Question 18

Wind pollinated plants adaptations - pollen grains

Answer 18

smooth, small, light -> easily blown by wind

Question 19

Wind pollinated plants adaptations - anthers

Answer 19

outside flower -> release pollen grains easily

Question 20

Wind pollinated plants adaptations - stigma

Answer 20

outside flower, feathery to catch pollen grains

Question 21

What is cross-pollination?

Answer 21

pollen from one plant lands on the stigma of another plant of the same species

Question 22

What is self-pollination?

Answer 22

Pollen from a plant lands on its own stigma
Reduces genetic variation

Question 23

How does the pollen tube grow?

Answer 23

Pollen grain lands on stigma
Pollen tube grows down style into ovule through ovary and micropyle
Fertilisation occurs - nuclei fuse
fertilised zygote -> embryo-> seed
ovary -> fruit

Question 24

What conditions are needed for seed germination?

Answer 24

Water
02
Suitable temp.

Question 25

Why do we need water for germination?

Answer 25

to activate enzymes to break down food reserve

Question 26

Why do we need oxygen for germination?

Answer 26

for respiration for growth

Question 27

Why do we need suitable temp. for germination?

Answer 27

for enzymes

Question 28

What is germination?

Answer 28

the growth of a shoot from a seed

Question 29

Asexual reproduction in plants naturally?

Answer 29

plants grow runners

Question 30

Asexual reproduction in plants artificially?

Answer 30

cuttings