When a baby is born, these processes occur.
1 breaking of the amniotic sac 2 contraction of muscles in the uterus wall 3 cutting of the umbilical cord
In which order do these processes usually occur?
2 --> 1 --> 3
2 --> 3 -- > 1
3 --> 1--> 2
3 --> 2 --> 1
The diagrams show pollen grains from three different species of plant as they appear under the microscope. The diagrams are all to the same scale.
Which pollen grains are involved in insect-pollination?
1 and 2
1 only
2 and 3
3 only
The diagram shows the human female reproductive system.
If a woman uses a femidom as a contraceptive, where would it be placed?
A
B
C
D
What are the characteristics of asexual reproduction?
The table shows the conditions provided for four sets of seeds.
Which of the seeds germinate?
The diagram shows a flower.
In which structure do seeds develop?
What must always be available to allow seeds to germinate?
carbon dioxide
light
mineral salts
water
The diagram shows half a flower.
On which structure would pollen be deposited in pollination?
Four tubes were set up as shown and placed in the dark.
In which tube would the seeds germinate first?
The diagram shows a vertical section through a flower.
What are X and Y?
X = anther ; Y = stigma
X = anther ; Y = style
X = stamen ; Y = stigma
X = stamen ; Y = style
Four samples of seeds germinated in different conditions of temperature and light, as shown in the table. A typical seedling from each sample was removed after seven days.
Which seedling was from sample 2?
he diagram shows a germinating broad bean seed which has been cut in half.
Which labels show the cotyledon and the plumule?
The diagram shows a process in plant reproduction.
Which process is represented by arrow X?
A fertilisation
B pollen tube growth
C pollen tube growth
D seed dispersal
Which environmental condition is not essential for the germination of all seeds?
A availability of light
B availability of oxygen
C availability of water
D a suitable temperature
The diagram shows a flower in vertical section.
Which numbered parts of the flower continue to develop after fertilisation?
A 1 and 5
B 2 and 4
C 3 and 5
D 4 and 5
To avoid extinction of a rare plant species, a botanical garden keeps a collection of seeds, known as a seed bank.
Which condition will prevent these seeds germinating whilst in storage?
A high humidity
B high oxygen levels
C low light intensity
D ow temperature
What may be defined as ‘an increase in dry mass’ in plants?
A growth
B nutrition
C reproduction
D respiration
The diagram shows a plant that is producing small plantlets.
Which statement about the plantlets is correct?
A They are genetically different from the parent plant.
B They are genetically identical to the parent plant.
C They are produced as a result of the fusion of nuclei.
D They are produced by fertilising the flowers.
Which response is a result of "geotropism"?
A flowers being produced
B growing bigger leaves
C roots growing downwards
D seeds germinating
Some bean seeds are planted 2 cm below the surface of some soil in a tray.
Which process will not occur as the seeds start to germinate?
B osmosis
C photosynthesis
The diagram shows an experiment on germination. Groups of test-tubes were set up as shown. The groups were placed in different conditions.
Which table shows the results?
The diagram shows a section through a flower.
After the flower is fertilised, which parts will develop into the fruit and the seed?
A Fruit: 1; Seed: 2.
B Fruit: 1; Seed: 4.
C Fruit: 2; Seed: 3.
D Fruit: 3; Seed: 4.
The graph is a record of the growth of a plant.
Which labels should be used for the x-axis and the y-axis?
A x-axis: dry mass; y-axis: number of cells
B x-axis: time; y-axis: cell size
C x-axis: time; y-axis: dry mass
D x-axis: total mass; y-axis: time
"Pollination" is the transfer of pollen -
A from anther to sepal
B from anther to stigma.
C from sepal to anther.
D from stigma to anther.
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