Pollination and Types

Q. Dandelions have a small seed surrounded by hair-like feathery structures. These seeds can be dispersed by ________.

1. water
2. wind
3. insects
4. humans

Q.

Mention the characteristic features of a wind-pollinated flower.

Q. The spongy seeds or seeds with the fibrous outer coat are generally dispersed by ___.

1. wind
2. animals
3. water
4. gravity

Q.

Characteristics that promote cross-pollination include all except

1. the pollen and ovules mature at different times in the same flower.

2. having male only and female only flowers

3. the anther and stigma are at different heights

4. the anther and stigma is at the same height

Q. Which among the following statements is incorrect regarding wind pollinated flowers?

1. Long and hanging stigma
2. Stamens are within the corolla
3. Dull-coloured flowers
4. Light and smooth pollen grains

Q. Which among the following are the agents of seed dispersal?

1. Wind
2. Water
3. Human beings
4. Soil

Q. The transfer of pollen from the anther of one flower to the stigma of another flower on a different plant of the same species is called _______.

1. self-pollination
2. cross-pollination
3. germination
4. fertilisation

Q.

Which of the following is a wind pollinated plant?

1. Trapa

2. Maize

3. Lotus

4. Marigold

Q. Seeds with fibrous outer covering are dispersed by ______.

1. wind
2. water
3. insects
4. animals

Q. Which one of the following is not a device to promote cross-pollination?

1. Cleistogamy
2. Herkogamy
3. Dichogamy
4. None of the above

Q. Seeds of fleshy fruits are majorly dispersed by ________.

1. wind
2. birds
3. water
4. sunlight

Q. Insect pollinated flowers usually possess __________.

1. Sticky pollens with rough surface
2. Large quantities of pollens
3. Brightly colored pollens
4. Dry pollens with smooth surface

Q.

Self-pollination is the

1. Transfer of pollen grains from anthers to the stigma of the same flower

2. Transfer of pollen grains from anthers to the stigma of a flower borne on the same plant

3. Transfer of pollen grains from anthers to the stigma of another flower

4. Transfer of pollen grains from anthers to the stigma of a flower of different species

Q.

The transfer of pollen from the anther of one flower to the stigma of another flower on a different plant of the same species is called

1. Self-pollination

2. Cross-pollination

3. Germination

4. All of the above

Q. Self-pollination means _____________.

1. Germination of pollens within the anther
2. Transference of pollens from anthers to the stigma within the same flower
3. Transference of pollens from one flower to another on the same plant
4. Presence of male and female sex organs in the same flower

Q. What are the types of pollination. Which among them is more advantageous? Why?

Q.

Pollination is the transfer of ___ from the anthers to the stigma of a flower.

1. seeds

2. ovules

3. ovaries

4. pollen grains

Q. Pollination occuring within two flowers of the same plant is called _________.

1. cross pollination
2. link pollination
3. exchange pollination
4. self pollination

Q.

The process of transfer of pollen from the stamen to the pistil is called ______________.

1. Gametogenesis

2. Pollination

3. Transfection

4. Copulation

Q. As plants are stationary, they seek the help of various agents for pollination.

1. False
2. True

Q.

Why is cross-pollination preferred over self-pollination?

1. The fruits developed after fertilisation are larger.

2. It increases the chances of variation.

3. It takes less time for fertilisation.

4. It makes sure that variations don't occur.

Q. Cross pollination is the transfer of pollen, from the anther to the stigma of another flower present on a different plant of the same species.

1. False
2. True

Q. Transfer of pollen from one flower to stigma of another flower of same species is termed as __________.

1. Fertilization
2. Cross-pollination
3. Dispersal
4. Self-pollination

Q.

Sunflower is an example of _____ plant.

1. insect pollinated

2. self-pollinated

3. wind pollinated

4. water pollinated

Q. a) Define pollination. [1 mark]
b) What are the two types of pollination? [2 marks]

Q. Which one of the following is a correct explanation of cross-pollination?

1. The pollen grains are transferred from one flower to another flower, of another plant of the same species.
2. The pollen grains are transferred to the stigma of the female part of the same flower of the same plant.
3. All of the above.
4. The pollen grains are transferred from one flower to another flower situated on the plant of the different species.