Chapter: 02. The Flower
Section A: Multiple Choice Questions (5 Marks)
Choose the best answer for each question.
Which part of a flower protects the inner whorls when it is in the bud stage?
(a) Petal
(b) Sepal
© Stamen
(d) Pistil The male reproductive whorl of a flower is also known as:
(a) Calyx
(b) Corolla
© Androecium
(d) Gynoecium What happens to the ovary of a flower after fertilisation?
(a) It becomes a seed.
(b) It becomes a fruit.
© It falls off.
(d) It forms pollen grains. Which of the following is NOT an essential condition for seed germination?
(a) Water
(b) Oxygen
© Light
(d) Suitable temperature Which flower is known for being the smallest, measuring about 0.5 mm in diameter?
(a) Rafflesia
(b) Rose
© Duckweed (Wolffia)
(d) Hibiscus Section B: Fill in the Blanks (5 Marks)
Complete the following sentences with the correct word(s).
The stalk that attaches a flower to the stem or branch is called the __________________. Flowers that have both male and female reproductive organs are called __________________ flowers. The fusion of male and female gametes is called __________________. The protective outer covering of a seed is known as the __________________. In __________________ germination, the cotyledons remain under the soil. Section C: True or False (4 Marks)
Write True if the statement is correct and False if it is incorrect.
The plumule is the part of the embryo that grows into the root system. Only insect-pollinated flowers produce nectar and scent. Apple is an example of a false fruit because its fleshy part forms from the thalamus. Seeds dispersed by wind are usually heavy and have hooks. Section D: Short Answer Questions (12 Marks)
Answer the following questions in 2-3 sentences.
What are sessile flowers? Why are sepals and petals considered “accessory whorls” of a flower? List two functions of a flower besides reproduction. Name two characteristics of insect-pollinated flowers. Briefly explain the role of the pollen tube during fertilisation. What are the main advantages of seed dispersal? Section E: Diagram-Based Question (4 Marks)
The image shows parts of a flower involved in reproduction.
Name the process shown in the diagram. Label the parts marked as 1 and 2. What happens to part 3 after the process shown is complete? Section F: Identifying and Differentiating Concepts (6 Marks)
Differentiate between Self-pollination and Cross-pollination.
(Provide two key differences) Differentiate between Dicotyledonous and Monocotyledonous seeds.
(Provide two key differences) Section G: Long Answer Questions (4 Marks)
Answer the following question in 4-5 sentences.
Describe the main changes that occur in the different parts of a flower after fertilisation, leading to the formation of a fruit and seeds. Section H: Environmental Awareness (2 Marks)
Why is it important for some flowers to produce nectar? 
Practice Paper
