🔬 Part 1: Plant Cell Structure

1. Label the plant cell diagram below with the following terms:

Cell wall, Cell membrane, Nucleus, Chloroplasts, Vacuole, Cytoplasm

2. Match each plant cell structure to its function by drawing lines:

Cell wall

Chloroplasts

Vacuole

Nucleus

Controls cell activities

Provides support and protection

Contains cell sap and maintains shape

Carries out photosynthesis

3. Which structure is found in plant cells but NOT in animal cells?

Nucleus

Cell membrane

Cell wall

Cytoplasm

🌸 Part 2: Plant Reproduction

4. Complete the sentences about flower structure using the words in the box:

Word box: pollen, ovules, petals, stamens, carpel, nectar

a) The male parts of a flower are called _____________ and they produce _____________.

b) The female part is called the _____________ and contains _____________.

c) Brightly coloured _____________ and sweet _____________ attract insects.

5. Put the stages of plant reproduction in the correct order by numbering 1-5:

Seed dispersal occurs

Pollination takes place

Seeds and fruit develop

Fertilisation occurs

Pollen tube grows to ovule

6. Explain the difference between pollination and fertilisation:

7. Name two methods of seed dispersal and give an example of each:

🐝 Part 3: Application and Extension

8. Many of our food crops depend on insect pollination. Explain why a decline in bee populations could affect human food security:

9. Extension: A farmer notices that their apple trees produce very few apples despite having many flowers. Suggest three possible reasons for this problem and explain your reasoning:

📋 Answer Key

1. Plant cell diagram should include: Cell wall (outer layer), Cell membrane (inside cell wall), Nucleus (control centre), Chloroplasts (green structures), Vacuole (large central space), Cytoplasm (jelly-like substance)

2. Matching:
• Cell wall → Provides support and protection
• Chloroplasts → Carries out photosynthesis
• Vacuole → Contains cell sap and maintains shape
• Nucleus → Controls cell activities

3. Cell wall

4.
a) stamens, pollen
b) carpel, ovules
c) petals, nectar

5. Order: 2-Pollination, 4-Pollen tube grows, 1-Fertilisation, 3-Seeds and fruit develop, 5-Seed dispersal

6. Pollination is the transfer of pollen from stamen to carpel. Fertilisation is when the male gamete joins with the female gamete inside the ovule.

7. Examples: Wind (dandelion/sycamore), Animals (burdock/cherry), Water (coconut), Explosion (pea pods)

8. Bees pollinate many food crops. Without bees, flowers wouldn't be pollinated, so fruits and seeds wouldn't form, reducing food production and threatening food security.

9. Possible reasons: Lack of pollinators, Poor weather during flowering preventing pollination, Disease affecting flower development, Lack of compatible apple varieties for cross-pollination