Pollination and Fertilisation

Q.

What is the function of stigma

Q.

What is pericarp ? Name its three layers.

Q. How many pollen sacs are present in the anther?

1. Three
2. Two
3. Four
4. Five

Q.

The male gametes of a flower are found in ______.

1. ovary

2. pollen grains

3. seed

4. ovules

Q.

How is the process of pollination different from fertilization?

Q.

The ovary of a flower has 20 ovules. How many seeds will a fruit that develops from that flower have?

1. 20

2. 25

3. 10

4. 40

Q. When a pollen from a flower falls on the stigma of another flower in another plant of the same species, it is called

1. Fertilisation

2. Self-pollination

3. Germination
   

4. Cross-pollination

Q.

The swollen part of the pistil is known as ________ .

1. ovary

2. ovules

3. petals

4. stamen

Q.

Pomegranate is which type of fruit.

1. Balausta

2. Pepo

3. Fibrous berry

4. Amphisarca

Q.

Definition of pericarp

Q.

What is the function of the pollen tube?

1. It helps in the process of pollination.

2. It helps in the development of the egg cell.

3. They transport the male gamete cells from the stigma to the ovules.

4. They are formed to avoid cross pollination.

Q.

The flowers in which both male and female reproductive structures are absent are called _________.

1. incomplete flowers

2. complete flowers

3. perfect flowers

4. neuter flowers

Q.

Pollen grains are produced in large quantity in wind-pollinated flowers

1. True
2. False

Q. ________ is the compartment found inside the ovary.

1. Style
2. Placenta
3. Ovule
4. Locule

Q.

Which of the following is NOT true about pollination?

1. Pollen grains that fall on flowers of different species get destroyed

2. Leaves surrounding Mussaenda flowers change colour to attract pollinators

3. Pollen grains that fall on flowers of different species produce new species of plants

4. Elephant yam produces a foul smell to attract flies for pollination

Q.

What is the significance of pollination?

Q.

Insect-pollinated flowers are dull in colour and are without scent.

1. True
2. False

Q.

Seed is ripened ___

1. Ovary

2. Ovule

3. Fruit

4. Grain

Q.

Does pollination occur in aquatic plants?

Q.

If a flower is not pollinated, the flower will die without producing seeds.

1. True

2. False

Q.

Which of the following parts of the flower are shed after fertilisation?

1. Calyx

2. Pedicel

3. Androecium

4. Petals

Q.

When a bee visits a flower, it gets covered with pollen. When the bee visits another flower, the pollen attaches to the ___________, resulting pollination.

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1. stigma

2. sepals

3. anther

4. petals

Q. Which of the following statements is correct regarding the stamens in hibiscus?

1. Stamens are free in the case of hibiscus.
2. The filaments are united in several groups
3. The filaments are united in two bundles.
4. The stamens are joined in a single group.

Q.

Pollen grains that fall on the stigma of other kinds of flowers get destroyed.

1. True

2. False

Q.

False fruits are -

1. Fruits without seeds

2. Fruits which develop from the ovary without fertilisation

3. Fruits which develop from parts of the flower other than the ovary

4. Fruits without pericarp

Q.

If the pollen from a plant is collected and dusted on the stigma of another. This type of pollination is called

1. Self-pollination

2. Artificial pollination

3. Self-pollination

4. None of the above

Q.

During pollination, ________ are transferred by the pollinating agents.

1. pollen grains

2. stigma

3. anthers

4. ovules

Q.

What stage of the alternation of generations is pollen?

Q.

Maize is

1. Cross pollinated by rain.

2. Self-pollinated

3. Cross pollinated by insects.

4. Cross pollinated by wind.

Q.

Choose the correct sequence.

1. Pollination --> Male gamete reaches the ovule --> Fertilisation --> Fruit formation

2. Male gamete reaches the ovule --> Pollination --> Fruit formation --> Fertilisation

3. Pollination --> Fertilisation --> Male gamete reaches the ovule --> Fruit formation

4. Male gamete reaches the ovule --> Pollination --> Fertilisation --> Fruit formation