Comprehensive Question Set on ICSE Class 9 Pollination and Fertilization

Check 1

Section 1: Association Task

Link the elements from Column I with the correct counterparts from Column II:

Section 2: Fill in the Blanks

Provide appropriate terms to complete the statements:

• The process involving the transfer of __________ is termed pollination.
• The two main types of pollination are __________ and __________.
• Self-pollinated flowers do not require being __________ or visually attractive.
• For effective self-pollination, __________ and __________ should mature simultaneously.
• Self-pollination does not lead to __________ variations.
• __________ pollination often results in a considerable amount of __________ wastage.

Check 2

True or False

Indicate whether the statements are true or false:

• The intine forms the outer layer of the pollen grain.
• The zygote develops into an embryo.
• The ovule eventually forms the fruit.
• Some fruits retain dry sepals after maturation.

Multiple Choice Questions

Choose the correct option:

1. The exine and intine are components of:
   • A) Embryo sac
   • B) Pollen grain
   • C) Stigma
   • D) Seed
2. Which feature is typical of self-pollinated flowers?
   • A) Large, visually striking flowers
   • B) Flowers that remain closed
   • C) Synchronization of stigma and anther maturation
   • D) High pollen production
3. Pollination where pollen from the same flower lands on its stigma is termed:
   • A) Geitonogamy
   • B) Autogamy
   • C) Homogamy
   • D) Allogamy
4. Which condition promotes self-pollination?
   • A) Homogamy
   • B) Herkogamy
   • C) Dichogamy
   • D) None of these
5. Pollination by birds is called:
   • A) Entomophily
   • B) Anemophily
   • C) Ornithophily
   • D) Elephophily
6. Identify a bird-pollinated flower:
   • A) Bougainvillea
   • B) Vallisneria
   • C) Bignonia
   • D) Rafflesia
7. Which flowers attract insect pollinators?
   • A) Wind-pollinated
   • B) Water-pollinated
   • C) Insect-pollinated
   • D) Elephant-pollinated
8. The male inflorescence of maize is referred to as:
   • A) Cob
   • B) Ear
   • C) Tassel
   • D) Silk
9. Wing and keel petals are characteristic of:
   • A) Pea plants
   • B) Vallisneria
   • C) Maize plants
   • D) Dahlia
10. Which is not a component of the embryo sac?

• A) Generative nucleus
• B) Antipodal cells
• C) Polar nuclei
• D) Synergids

Very Short Answer Questions

1. Identify the primary pollinator for each plant:
   • Dahlia: (Crow, butterflies, mosquito)
   • Maize: (Bees, locusts, rain, wind)
   • Vallisneria: (Wind, water, ants, rabbits)
2. Fill in the blanks with suitable terms:
   • The transfer of pollen grains to the stigma of the same flower is termed __________.
   • The difference in maturation times of gynoecium and androecium is known as __________.
   • __________ is a classic example of water-pollinated flowers.
3. Match the items from Column A with Column B:

4. Specify the parts of the ovary that develop into:
   • Seed
   • Fruit
   • Fruit wall
5. Provide single terms for the following:
   • A flower with both reproductive organs.
   • The arrangement of flowers on a stem.
   • Pollination where pollen reaches its own stigma.
   • Differing maturation times in reproductive parts.
   • Unequal growth of stigma and anthers promoting cross-pollination.
   • Pollination facilitated by insects.
   • Pollination facilitated by birds.

Short Answer Questions

1. Define the following:
   • Ornithophily
   • Elephophily
   • Artificial pollination
2. Explain the terms:
   • Pollination
   • Herkogamy
   • Cleistogamy
   • Emasculation
   • Fertilization
3. What transformations occur after fertilization in:
   • Ovules
   • Calyx
   • Petals
   • Stamens
4. Mention two floral adaptations that support cross-pollination.

Long Answer Questions

1. Differentiate between the following:
   • Autogamy and Geitonogamy
   • Homogamy and Dichogamy
   • Protandry and Protogyny
   • Entomophilous and Anemophilous flowers
   • Advantages of self and cross-pollination
2. What are the benefits of the following features for a plant?
   • Long, feathery stigma
   • Brightly colored petals
   • Lightweight, smooth pollen
   • Exposed, movable anthers
   • Fragrant nectar
3. Discuss the pros and cons of cross-pollination.
4. Describe the role of the pollen tube with an illustrative diagram.

Structured/Application Questions

1. Analyze the diagram of a flower process and answer:
   • (a) Identify and define the process.
   • (b) State the technical term for it.
   • (c) Provide two plant examples.
   • (d) Mention  advantage and disadvantage.
   • (e) Identify two agents involved.
2. Examine the diagram of a germinating pollen grain and respond:
   • (a) Name the parts labeled 1 to 5.
   • (b) Where and how does pollen germination occur?
   • (c) What is the role of part ‘4’?
   • (d) What happens to part ‘5’ during germination?
3. Review the fertilization diagram and answer:
   • (a) Identify parts labeled 1 to 6.
   • (b) What occurs to (i) the ovary and (ii) the ovule post-fertilization?
   • (c) Explain the function of synergids.
   • (d) What is the role of stigma in fertilization?