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IGCSE Biology - Plant Reproduction Flashcards | StudBud
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IGCSE Biology - Plant Reproduction
What are parts 1,2 and 3 respectively?
What are the specific conditions a seed needs to germinate?
IGCSE Biology - Plant Reproduction
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Answers
1
What are the specific conditions a seed needs to germinate?
Air, water, heat
Oxygen, water, heat
Air, water, warmth
Oxygen, water, warmth
2
What are parts 1,2 and 3 respectively?
Pollen, Anther, Petal
Anther, Filament, Petal
Anther, Filament, Stamen
Pollen, Filament, Sepal
3
What is pollination?
Transfer of gametes from anther to stigma
Transfer of pollen from anther to stigma
Insects come and take honey from the flowers
Transfer of pollen grains from anther to stigma
4
Is self-pollination an example of asexual reproduction?
I have no clue I mean it says ''SELF-pollination'' so idk
No
Yes
What do you think?
5
What is the function of the sepal?
Protect the ovary of the flower
Guarding the ovules
Protect the flower from drying out of water
Make the flower look attractive to insects
6
What is a function of part 7 (the ovary)?
The site which receives pollen grains from the anther
Releases hormones: oestrogen and progesterone
Develops into a fruit and protects the ovules
Digests hormones: oestrogen and progesterone
7
What are parts 4,5 and 6 respectively?
Stamen, Sepal, Style
Stamen, Carpel, Style
Petal, Stigma, Ovary
Sepal, Stigma, Style
8
Why do the anthers of a wind-pollinated flower dangle out?
To reach out to the stigma
Lack of water, sticking out shows that it is dehydrated
To release pollen into the wind
To brush against passing animals
9
What is the full definition of
asexual
reproduction?
Self fertilisation
Production of genetically identical offspring from 1 parent
Production of partially-identical offspring from 1 parent
Combination of 2 haploid nuclei to form a diploid zygote
10
Insect pollinated plants contain nectar to attract mammals. Explain why.
False
True
True. To pollinate it.
False. It attracts insects not mammals.
11
What does the micropyle develop into?
Flowers of the plant
Root cortex cells
Root of the plant
Leaves of the plant
12
List some advantages from asexual reproduction
Super fast reproduction rate
Production of offspring with new traits
Offspring gets new adaptations likes immunity to disease
Plants won't catch diseases from other plants
13
What is fertilisation?
The act done by a male and female
Formation of a diploid nuclei
The transfer of pollen grains from anther to stigma
Fusion of gamete nuclei
14
Wind pollinated plants have bright, coloured petals
False
True
15
Why are the petals so useful to the flower?
It protects certain parts of the flowers
Attracts and repels certain pollinators
Attracts every kind of pollinator
It makes the flower look attractive
16
What are the functions of part 6?
Gives the stigma its upright shape
Supports the stigma and connects it to ovules
Renders the ovary attractive
Supports the stigma and connects it to ovary
17
What does the plumule develop into?
Root of the plant
Flowers of the plant
Shoot of the plant
Leaves of the plant
18
List some disadvantages of asexual reproduction
New adaptations pass onto offsprings really slowly
Plants get new traits, some of which may be harmful
Won't have a plant to mate with :( #lonely (nothing more)
In a population, disease will spread rapidly
19
Why does the stigma hang outside the flower?
To make contact with the anther
So that it can catch other pollens out of reach
It is dehydrated
To catch the drifting pollen
20
What is the function of the ovary in reproduction?
It absorbs the hormones: oestrogen and progesterone
It produces eggs for fertilisation
It develops into eggs after a period of 4 weeks
It is the site where pollen is given first before to stigma
