The image below shows a dandelion flower.

Dandelions are capable of self-pollination as well as cross-pollination.

Explain the disadvantages for plants, such as dandelions, of reproducing sexually.

Plants have methods to disperse their seeds over a wide area.

Explain the advantages of having seeds that are dispersed over a wide area.

Explain the role of enzymes in seed germination.

The flowers of watermelon plants can be pollinated by bees.

Give three features of flowers that attract bees and other insects.

Describe the events that happen from the moment pollen grains leave the anther of a flower until fertilisation occurs.

The photographs below show two different types of flower.

Both photos below are creative commons, can they just be made greyscale and put next to each other with "Flower A" and "Flower B" underneath them please?

Use the photographs to explain which of these two flowers is insect-pollinated.

After pollination, fertilisation may happen.

Number the stages in the process of plant reproduction to order them.

pollen tube grows down style

nuclei move down pollen tube

pollen grain germinates

zygote formed

petals wither

pollen grain lands on stigma

Hay fever is the name commonly given to the allergy to pollen produced by flowering plants.

Suggest why hay fever is more likely to be caused by pollen from a wind-pollinated flower than an insect-pollinated flower.

Raspberries rely on birds and other animals to disperse their seeds.

Birds ingest the raspberries and digest the pulp.

The seeds move through the birds' digestive systems and are passed out with their droppings. 

Suggest why the birds can digest the pulp but not the seeds of raspberries.

Name and describe one method of seed dispersal that does not require animals such as birds or insects.

Seeds remain dormant in the soil until it rains.

Describe how rain enables germination to take place.

State two other environmental conditions that seeds require so that they can germinate.

Do not mention water in your answer.

A gardener has planted some seeds in his garden.

The gardener is waiting for his seeds to germinate.

How can he tell whether his seeds have germinated?

Pollination is the process by which flowering plants reproduce.

Which two of the statements below about cross-pollination in plants are correct?

The drawing shows a pollen grain seen under a microscope.

Explain how the structure of this pollen grain shows it is from an insect-pollinated flower.

Describe the events that take place from when pollen lands on the stigma of a flower to when seeds are formed.

Plants produce seeds by sexual reproduction.

Fertilisation takes place before seeds are formed.

Name the structure that contains the male sex cells involved in fertilisation.

Explain how plants that grow from seeds survive before they start performing photosynthesis.

Name a part of a flowering plant where mitosis occurs and a part where meiosis occurs.

The image below shows structures involved in fertilisation in a flowering plant.

Name each of the parts A, B and C.

In which of the parts A, B or C, does fertilisation occur?

In which of the parts A, B or C, do pollen grains land during pollination?

In which of the parts A, B or C, does most of the pollen tube growth happen?

In which of the parts A, B or C, will a seed develop?

Which structure in flowers contains pollen grains?

Give two adaptations of pollen from wind-pollinated flowers.

Pollen grains are deposited on the stigma and grow pollen tubes down the style.

Suggest how the style tissue helps pollen tubes grow.

A farmer grows pear trees.

Pear trees rely on insects such as bees to be pollinated and produce a pear crop.

The farmer is concerned that the use of pesticides on a neighbouring farm will reduce the yield of pears.

Design an investigation to assess if the use of pesticides affects the yield of pears.