Pollination Outbreeding Devices

Long filamentous threads protruding at the end of a young cob of maize are:

1.	anthers	2.	styles
3.	ovaries	4.	hairs

Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called:

1. xenogamy

2. geitonogamy

3. karyogamy

4. autogamy

Wind pollinated flowers are:

1.	small, brightly coloured, producing large number of pollen grains
2.	small, producing large number of dry pollen grains
3.	large, producing abundant nectar and pollen
4.	small, producing nectar and dry pollen

Both, autogamy and geitonogamy are prevented in:

1. Papaya

2. Cucumber

3. Castor

4. Maize

Even in the absence of pollinating agents, seed-setting is assured in:

1. Commelina

2. Zostera

3. Salvia

4. Fig

Advantage of cleistogamy is:

1. More vigorous offspring

2. No dependence of pollinator

3. Vivipary

4. Higher genetic variability

Pollination in water hyacinth and water lily is brought about by the agency of:

1.	water	2.	insects or wind
3.	birds	4.	bats

Attractants and rewards are required for:

1.	Entomophily	2.	Hydrophily
3.	Cleistogamy	4.	Anemophily

Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by:

1.	Bee	2.	Wind
3.	Bat	4.	Water

A dioecious flowering plant prevents both:

1. Autogamy and geitonogamy

2. Geitonogamy and xenogamy

3. Cleistogamy and xenogamy

4. Autogamy and xenogamy

Winged pollen grains are present in:

1 Mustard
2. Cycas
3. Mango
4. Pinus

Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?

1.	Hydrilla	2.	Yucca
3.	Banana	4.	Viola

Select the incorrect statement:

1.	Inbreeding helps in the accumulation of superior genes and the elimination of undesirable genes
2.	Inbreeding increases homozygosity
3.	Inbreeding is essential to evolve pure lines in any animal
4.	Inbreeding selects harmful recessive genes that reduce fertility and productivity

Which of the following is incorrect for wind-pollinated plants?

1. Well exposed stamens and stigma

2. Many ovules in each ovary

3. Flowers are small and not brightly colored

4. Pollen grains are light and non-sticky

The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which during pollination, brings genetically different types of pollen grains to stigma, is:

1.	Chasmogamy	2.	Cleistogamy
3.	Xenogamy	4.	Geitonogamy

Identify the incorrect statement related to Pollination:

1.	Moths and butterflies are the most dominant pollinating agents among insects
2.	Pollination by water is quite rare in flowering plants
3.	Pollination by wind is more common amongst abiotic pollination
4.	Flowers produce foul odours to attract flies and beetles to get pollinated

Given below are two statements:

Statement I:	Cleistogamous flowers are invariably autogamous.
Statement II:	Cleistogamy is disadvantageous as there is no chance for cross pollination.

In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is incorrect but Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.

What is the function of the ears in the corn cob?

1.	To protect seeds	2.	To attract insects
3.	To trap pollen grains	4.	To disperse pollen grains

Large, colorful, fragrant flowers with nectar are seen in:

1.	wind pollinated plants	2.	insect pollinated plants
3.	bird pollinated plants	4.	bat pollinated plants

Identify the set of correct statements:

A:	The flowers of Vallisneria are colourful and produce nectar.
B:	The flowers of waterlily are not pollinated by water.
C:	In most of water-pollinated species, the pollen grains are protected from wetting.
D:	Pollen grains of some hydrophytes are long and ribbon like.
E:	In some hydrophytes, the pollen grains are carried passively inside water.

Choose the correct answer from the options given below:
1. A, B, C and D only
2. A, C, D and E only
3. B, C, D and E only
4. C, D and E only

Identify the correct description about the given figure:

1.	Water pollinated flowers showing stamens with mucilaginous covering.
2.	Cleistogamous flowers showing autogamy.
3.	Compact inflorescence showing complete autogamy.
4.	Wind pollinated plant inflorescence showing flowers with well exposed stamens.

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A):	Both wind and water pollinated flowers are not very colourful and do not produce nectar.
Reason (R):	The flowers produce enormous amount of pollen grains in wind and water pollinated flowers.

In the light of the above statements, choose the correct answer from the options given below.

1.	(A) is True but (R) is False.
2.	(A) is False but (R) is True.
3.	Both (A) and (R) are True and (R) is the correct explanation of (A).
4.	Both (A) and (R) are True but (R) is not the correct explanation of (A).