Sexual Reproduction in Plants
76 questions· page 1 of 8
The diagrams show the fruits of some plants.
Which fruit uses wind to disperse its seeds?
Options
Which part of the flower develops into a fruit?
Options
A ovary
B ovule
C sepal
D stamen
An experiment is set up to investigate the conditions necessary for seeds to germinate.
In which flask will the seeds germinate first?
Options
Some features of four flowers, A, B, C and D, are recorded in the table.
Which flower is most likely to be pollinated by wind?
Options
| smooth pollen | sticky pollen | anthers inside petals | stigma outside petals | small petals | large petals | |
|---|---|---|---|---|---|---|
| A | ✓ | ✗ | ✗ | ✓ | ✓ | ✗ |
| B | ✗ | ✓ | ✓ | ✗ | ✗ | ✓ |
| C | ✓ | ✗ | ✗ | ✓ | ✗ | ✓ |
| D | ✗ | ✓ | ✓ | ✓ | ✗ | ✓ |
key:
✓ = present
✗ = absent
The diagram shows a carpel after pollination. Pollen grains from two different species of flower have landed on the stigma.
What explains the difference in the germination of the two types of pollen grains shown?
Options
A Cross-pollination is better than self-pollination.
B After self-pollination, germination of pollen grains of species 2 is prevented.
C The carpel is from a flower of species 1.
D The carpel is from a flower of species 2.
Which diagram matches each type of flower with its features?
Options
The seeds of some plants will not normally germinate until they have been in the soil for several months.
Some seeds were collected from a plant of this type.
Some students wanted to find out whether a chemical in the testa prevented germination.
The seeds were divided into three groups.
Each group of seeds was put into a shallow dish and covered with water.
The lid that was used was loose fitting so that oxygen could reach the seeds.
Group 1 were whole seeds.
Group 2 were seeds from which the testas had been removed.
Group 3 were seeds from which the testas had been removed, but the testas were placed separately in the same dish.
Only the seeds in group 2 germinated.
What would be the most logical extension of this experiment?
Options
A change the water of the seeds in group 3 every day to see if they germinate
B change the apparatus so that oxygen cannot reach the seeds
C repeat the experiment at several different temperatures
D repeat the experiment using different species of seed
The diagram shows the parts of a flower.
Which labelled part will develop into a seed following fertilisation?
Options
A A
B B
C C
D D
What is the function of the sepals of most flowers?
Options
A to attract insects
B to produce pollen
C to protect the flower buds
D to receive pollen
In plant reproduction, the following processes occur.
- fertilisation
- growth of a pollen tube
- pollination
- seed germination
In which order do these processes take place?
Options
A 1 → 4 → 2 → 3
B 2 → 1 → 3 → 4
C 3 → 2 → 1 → 4
D 4 → 3 → 1 → 2