Agents of Pollination

Q. Animals play an important role in plant reproduction.

1. True
2. False

Q. Which of the following are wind pollinated plants?

1. Grass
2. Vallisneria
3. Maize
4. Sugarcane

Q.

Define Water pollination

Q. Self-pollination is the transfer of pollen from the anther of a flower to the stigma:
(More than one answer can be correct)

1. of the same flower
2. of a flower on another plant of any species
3. of another flower of the same plant
4. of a flower on another plant of the same species

Q. Which among the following is/are millets?

1. Jowar
2. Bajra
3. Ragi
4. Wheat

Q.

Why do some seeds have wings?

1. To grip branches

2. To be carried away by the wind

3. To catch prey

4. To help in opening fruits

Q. Which of the following is a characteristic feature that insect pollinated plants posses which wind pollinated plants do not have?

1. Long filaments
2. More pollen grains
3. Bright petals
4. Small size

Q. Find the correct statement(s) with respect to the image.

1. In such plants male and female plants are seperate.
2. Male flowers detach from the plant and are carried towards female flowers by water currents.
3. This kind of pollination is commonly found in vallisneria, hydrilla and elodea.
4. In these kinds of plants, flowers are prominent with nector.

Q. Choose the characteristics of flowers in which pollination occurs by wind.

1. They produce light pollen so that it is easily carried away.
2. Wind pollinated flowers generally have long stigma.
3. A large amount of pollen is produced.
4. Flowers are colourful and scented having nectar.

Q. Choose the incorrect option with respect to sexual reproduction in animals.

1. Formation of gametes occurs
2. Offsprings formed are clones
3. Two parents are involved
4. Fusion of gametes occurs

Q. Which of the following is/are applicable to wind pollinated flowers?

1. Pollen grains are produced in large number.
2. Flowers have nectar.
3. Flowers are very small and dull coloured.
4. Wind pollinated flowers have hanging stigma.

Q. What is meant by emasculation?

Q.

Which part of the flower acts as an advertising board for insects in most flowering plants?

1. Petals

2. Sepals

3. Calyx

4. Androecium

Q. Which statement correctly defines artificial pollination?

1. Pollen grains from one flower is placed by hand on the receptive stigma of another flower.
2. Pollen grains from anther of one flower fall onto the stigma of the another flower on the same plant.
3. Pollen grains from anther of one flower fall onto the stigma of the same flower.
4. Pollen grains from anther of one flower fall onto the stigma of another flower present on the different plant of the same species.

Q.

__ (Self-pollination/Cross-pollination) is the transfer of pollen from the anther to the stigma of the same flower or to the stigma of another flower of the same plant.

Q. Entomophily is pollination by

1. Water
2. Animals
3. Air
4. Insects

Q.

Distinguish between sexual reproduction and asexual reproduction

Q.

Man himself is a great disseminator of seeds, he disperses seeds to get ____________.

1. Food

2. Fibre

3. Fodder

4. All of these

Q. The transfer of pollen from the anther to the stigma of a flower is called .

1. translocation
2. fertilisation
3. pollination

Q.

how artificial pollination takes place