341720
In order to attract insects for pollination
1 Petals are brightly coloured
2 Petals are protected by calyx
3 Epicalyx is essential
4 Petals have large surface area
Explanation:
In order to attract insects for pollination petals should be brightly coloured.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341721
Characteristics of wind pollinated pollen is, they are
1 Non-sticky
2 Light
3 Large number in production
4 All of these
Explanation:
Wind pollinated flowers produce more pollen grains (for example: a single flower of Cannabis produces 5,00,000 pollen grains). Pollen grains are light, dry, non-sticky and rough.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341722
Pollination by water occurs in
1 Vallisneria
2 Zostera
3 Salvia
4 Both (1) and (2)
Explanation:
Pollination by water (called hydrophily) occurs in Vallisneria. In vallisneria (ribbon weed), female flower reaches on the surface of water and assumes horizontal position due to elongation of its stalk, male flowers or pollen grains are released on to the surace of water. They are carried passively by water currents & some of which eventually reach to the stigma. In zostera pollination by Hypohydrophily.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341723
A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by:
1 Insects
2 Water
3 Wind
4 Animals
Explanation:
Light and non-sticky pollens are ideal to be blown away by wind. Feathery stamens are able to sway with the wind which helps in release of pollens into air.
341720
In order to attract insects for pollination
1 Petals are brightly coloured
2 Petals are protected by calyx
3 Epicalyx is essential
4 Petals have large surface area
Explanation:
In order to attract insects for pollination petals should be brightly coloured.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341721
Characteristics of wind pollinated pollen is, they are
1 Non-sticky
2 Light
3 Large number in production
4 All of these
Explanation:
Wind pollinated flowers produce more pollen grains (for example: a single flower of Cannabis produces 5,00,000 pollen grains). Pollen grains are light, dry, non-sticky and rough.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341722
Pollination by water occurs in
1 Vallisneria
2 Zostera
3 Salvia
4 Both (1) and (2)
Explanation:
Pollination by water (called hydrophily) occurs in Vallisneria. In vallisneria (ribbon weed), female flower reaches on the surface of water and assumes horizontal position due to elongation of its stalk, male flowers or pollen grains are released on to the surace of water. They are carried passively by water currents & some of which eventually reach to the stigma. In zostera pollination by Hypohydrophily.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341723
A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by:
1 Insects
2 Water
3 Wind
4 Animals
Explanation:
Light and non-sticky pollens are ideal to be blown away by wind. Feathery stamens are able to sway with the wind which helps in release of pollens into air.
341720
In order to attract insects for pollination
1 Petals are brightly coloured
2 Petals are protected by calyx
3 Epicalyx is essential
4 Petals have large surface area
Explanation:
In order to attract insects for pollination petals should be brightly coloured.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341721
Characteristics of wind pollinated pollen is, they are
1 Non-sticky
2 Light
3 Large number in production
4 All of these
Explanation:
Wind pollinated flowers produce more pollen grains (for example: a single flower of Cannabis produces 5,00,000 pollen grains). Pollen grains are light, dry, non-sticky and rough.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341722
Pollination by water occurs in
1 Vallisneria
2 Zostera
3 Salvia
4 Both (1) and (2)
Explanation:
Pollination by water (called hydrophily) occurs in Vallisneria. In vallisneria (ribbon weed), female flower reaches on the surface of water and assumes horizontal position due to elongation of its stalk, male flowers or pollen grains are released on to the surace of water. They are carried passively by water currents & some of which eventually reach to the stigma. In zostera pollination by Hypohydrophily.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341723
A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by:
1 Insects
2 Water
3 Wind
4 Animals
Explanation:
Light and non-sticky pollens are ideal to be blown away by wind. Feathery stamens are able to sway with the wind which helps in release of pollens into air.
341720
In order to attract insects for pollination
1 Petals are brightly coloured
2 Petals are protected by calyx
3 Epicalyx is essential
4 Petals have large surface area
Explanation:
In order to attract insects for pollination petals should be brightly coloured.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341721
Characteristics of wind pollinated pollen is, they are
1 Non-sticky
2 Light
3 Large number in production
4 All of these
Explanation:
Wind pollinated flowers produce more pollen grains (for example: a single flower of Cannabis produces 5,00,000 pollen grains). Pollen grains are light, dry, non-sticky and rough.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341722
Pollination by water occurs in
1 Vallisneria
2 Zostera
3 Salvia
4 Both (1) and (2)
Explanation:
Pollination by water (called hydrophily) occurs in Vallisneria. In vallisneria (ribbon weed), female flower reaches on the surface of water and assumes horizontal position due to elongation of its stalk, male flowers or pollen grains are released on to the surace of water. They are carried passively by water currents & some of which eventually reach to the stigma. In zostera pollination by Hypohydrophily.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341723
A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by:
1 Insects
2 Water
3 Wind
4 Animals
Explanation:
Light and non-sticky pollens are ideal to be blown away by wind. Feathery stamens are able to sway with the wind which helps in release of pollens into air.
