Comprehensive Question Set on “The Flower” – ICSE Class 9
Explore a detailed question set on “The Flower” for ICSE Class 9. Includes true/false, MCQs, short and long answer questions, and application-based queries for thorough exam preparation.
True (T) or False (F):
- Flowers can be categorized as complete or incomplete.
- A typical flower consists of six floral whorls.
- Bracts are generally green but can sometimes be large and colorful.
- Nasturtium is known to have nectaries.
- Stamens and carpels are the male and female parts of a flower, respectively.
- The prefix “gamo-” signifies fusion within floral whorls.
- Stigma can be either simple or divided into multiple lobes.
- Papaya is an example of a monoecious plant.
Multiple Choice Questions (MCQs)
- Bougainvillea flowers are characterized by:
- A) Large sepals
- B) Large nectary
- C) Large colorful petals
- D) Large colorful bracts
- A flower is termed complete when it possesses:
- A) Corolla and calyx
- B) Corolla and gynoecium
- C) Androecium and gynoecium
- D) All four whorls
- The fruit originates from which part of the flower?
- A) Sepals
- B) Petals
- C) Ovary
- D) Stamens
- Which part of a flower develops into seeds?
- A) Ovary
- B) Placenta
- C) Ovule
- D) Pollen grain
- The essential whorls of a flower include:
- A) Calyx and Corolla
- B) Stamen and Ovary
- C) Calyx and Epicalyx
- D) Androecium and Gynoecium
- The floral stalk is scientifically known as:
- A) Petiole
- B) Peduncle
- C) Pedicel
- D) Funicle
- Which part of the pistil receives pollen grains?
- A) Style
- B) Ovary
- C) Stigma
- D) Ovules
- Perianth is a collective term for:
- A) Sepals
- B) Tepals
- C) Bracts
- D) Petals
- Androecium with all stamens free is termed as:
- A) Polyadelphous
- B) Polysepalous
- C) Polyandrous
- D) Polypetalous
- A flower possessing both stamens and carpels is called:
- A) Unisexual
- B) Pistillate
- C) Staminate
- D) Hermaphrodite
Very Short Answer Questions
Match the following:
- Polyadelphous – (a) Pollen grains
- Free petals – (b) Non-essential
- Sweet fragrant fluid – (c) Nectar
Name the following:
- The four whorls of a flower.
- Two types of unisexual flowers.
- Two primary components of a stamen.
- Three main parts of a pistil.
- Three types of stamens based on cohesion.
Provide two examples for each:
- Monoecious plants.
- Dioecious plants.
- Imperfect flowers.
- Bisexual flowers.
Fill in the blanks:
- Floral parts are organized on the __________ in four whorls.
- The collective term for petals is __________.
- __________ and corolla are accessory whorls of a flower.
- The structure attaching ovules to the ovary wall is the __________.
- The sweet fluid produced by flowers is called __________.
Short Answer Questions
- Define the following:
- Flower
- Inflorescence
- Placentation
- Bract
- Epicalyx
- Where are the following located and what are their roles?
- Placenta
- Thalamus
- Anther
- Stigma
- Differentiate between:
- Flower and Inflorescence
- Petals and Petaloid Tepals
Long Answer Questions
- Distinguish between the following pairs:
- Monoecious and Dioecious plants
- Perfect and Imperfect flowers
- Unisexual and Bisexual flowers
- Polyandrous and Polyadelphous stamens
- Explain why:
- The androecium of a pea flower is termed diadelphous.
- Ray flowers of sunflower are described as neuters.
- Sepals of Salvia are considered petaloid.
- What are bracts and what is their significance?
- Explain Monadelphous, Diadelphous, and Polyadelphous stamens with diagrams and name a flower for each type.
Structured/Application Questions
- Identify and label the parts numbered 1 to 10 in the generalized diagram of a bisexual flower.
- Study the figures of a floral part and answer:
- Identify the major organ represented in figure A.
- Are the pollen sacs in figure B male or female in nature?
- How do pollen sacs release their contents?
- Identify types of androecium (A, B, C, D) and give examples of each.
- Draw neat diagrams of the male and female reproductive organs of a flower, labeling key parts.
- Illustrate the following:
- Polysepalous calyx
- Gamosepalous calyx
- Polypetalous corolla
- Gamopetalous corolla
- Bracteate flower
