262708
Which of the following is incorrect for wind pollinated plants?
1 Pollen grains are light and non-sticky
2 Well exposed stamens and stigma
3 Many ovules in each ovary
4 Flowers are small and not brightly coloured
Explanation:
Wind pollinated flowers one characterized by single ovule in each ovary, small and inconspicuous, colorless and nectar-less flowers, light and sticky pollen grains, well exposed stamens and sticky stigma. All these factors contribute to the high probability of pollination and thus, fertilization of flowers.
NEET-2020 Phase-II
Sexual Reproduction in Flowering Plants
262710
Which of the following are the important floral rewards to the animal pollinators ?
1 Nectar and pollen grains
2 Floral fragrance and calcium crystals
3 Protein pellicle and stigmatic exudates
4 Colour and large size flower
Explanation:
Nectar is a sugar liquid that provides a source of energy for many pollinators, including bees, butterflies, and hummingbirds. Pollen grains contains essential proteins, fast and other nutrients making them a valuable food source for containg pollinators like bees.
AIPMT-2015
Sexual Reproduction in Flowering Plants
262714
What type of pollination takes place in Vallisneria?
1 Male flowers are carried by water currents to female flowers at surface of water.
2 Pollination occurs in submerged condition by water.
3 Flowers emerge above surface of water and pollination occurs by insects.
4 Flowers emerge above water surface and pollen is carried by wind.
Explanation:
Pollination in Vallisneria is a type of epihydrophily, which is pollinated by water. Vallisneria is a dioecious plants, meaning that male and female plants are separate. The male flowers are small and detach from the plant when they mature. They then float on the surface of water. The female flowers have long stalks that allow them to reach the surface of water. The pollen from the male flowers is carried by water currents to the female flowers, where it pollinate them.
NEET (Odisha)-2019
Sexual Reproduction in Flowering Plants
262744
Jaculators are present in
1 none of these
2 ruellia
3 eeballium
4 impatiens
Explanation:
Jaculators are present in Ruellia. It is a mechanism of seed dispersal. In this mechanism, capsules are produced by the pollinated flowers have small hook-like outgrowth called retinaculum or Jaculators attached to the seeds. When the capsule dries, it breaks and the retinaculum throws the seeds away from the parent plant. The dispersal of seeds can be done by different means. It can be biotic or abiotic vectors.
Haryana PMT-2007
Sexual Reproduction in Flowering Plants
262722
Mesogamy is
1 fusion of male and female gametes
2 fusion of physiologically similar and morphologically different gametes
3 entry of pollen tube through integuments
4 None of the above
Explanation:
Mesogamy is a type of fertilization in which the pollen tube enters the ovule through the integuments, which are the protective layers of the ovule. It is found in all Cucurbit plants such as pumpkins, Cucumbers and melons.
262708
Which of the following is incorrect for wind pollinated plants?
1 Pollen grains are light and non-sticky
2 Well exposed stamens and stigma
3 Many ovules in each ovary
4 Flowers are small and not brightly coloured
Explanation:
Wind pollinated flowers one characterized by single ovule in each ovary, small and inconspicuous, colorless and nectar-less flowers, light and sticky pollen grains, well exposed stamens and sticky stigma. All these factors contribute to the high probability of pollination and thus, fertilization of flowers.
NEET-2020 Phase-II
Sexual Reproduction in Flowering Plants
262710
Which of the following are the important floral rewards to the animal pollinators ?
1 Nectar and pollen grains
2 Floral fragrance and calcium crystals
3 Protein pellicle and stigmatic exudates
4 Colour and large size flower
Explanation:
Nectar is a sugar liquid that provides a source of energy for many pollinators, including bees, butterflies, and hummingbirds. Pollen grains contains essential proteins, fast and other nutrients making them a valuable food source for containg pollinators like bees.
AIPMT-2015
Sexual Reproduction in Flowering Plants
262714
What type of pollination takes place in Vallisneria?
1 Male flowers are carried by water currents to female flowers at surface of water.
2 Pollination occurs in submerged condition by water.
3 Flowers emerge above surface of water and pollination occurs by insects.
4 Flowers emerge above water surface and pollen is carried by wind.
Explanation:
Pollination in Vallisneria is a type of epihydrophily, which is pollinated by water. Vallisneria is a dioecious plants, meaning that male and female plants are separate. The male flowers are small and detach from the plant when they mature. They then float on the surface of water. The female flowers have long stalks that allow them to reach the surface of water. The pollen from the male flowers is carried by water currents to the female flowers, where it pollinate them.
NEET (Odisha)-2019
Sexual Reproduction in Flowering Plants
262744
Jaculators are present in
1 none of these
2 ruellia
3 eeballium
4 impatiens
Explanation:
Jaculators are present in Ruellia. It is a mechanism of seed dispersal. In this mechanism, capsules are produced by the pollinated flowers have small hook-like outgrowth called retinaculum or Jaculators attached to the seeds. When the capsule dries, it breaks and the retinaculum throws the seeds away from the parent plant. The dispersal of seeds can be done by different means. It can be biotic or abiotic vectors.
Haryana PMT-2007
Sexual Reproduction in Flowering Plants
262722
Mesogamy is
1 fusion of male and female gametes
2 fusion of physiologically similar and morphologically different gametes
3 entry of pollen tube through integuments
4 None of the above
Explanation:
Mesogamy is a type of fertilization in which the pollen tube enters the ovule through the integuments, which are the protective layers of the ovule. It is found in all Cucurbit plants such as pumpkins, Cucumbers and melons.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Sexual Reproduction in Flowering Plants
262708
Which of the following is incorrect for wind pollinated plants?
1 Pollen grains are light and non-sticky
2 Well exposed stamens and stigma
3 Many ovules in each ovary
4 Flowers are small and not brightly coloured
Explanation:
Wind pollinated flowers one characterized by single ovule in each ovary, small and inconspicuous, colorless and nectar-less flowers, light and sticky pollen grains, well exposed stamens and sticky stigma. All these factors contribute to the high probability of pollination and thus, fertilization of flowers.
NEET-2020 Phase-II
Sexual Reproduction in Flowering Plants
262710
Which of the following are the important floral rewards to the animal pollinators ?
1 Nectar and pollen grains
2 Floral fragrance and calcium crystals
3 Protein pellicle and stigmatic exudates
4 Colour and large size flower
Explanation:
Nectar is a sugar liquid that provides a source of energy for many pollinators, including bees, butterflies, and hummingbirds. Pollen grains contains essential proteins, fast and other nutrients making them a valuable food source for containg pollinators like bees.
AIPMT-2015
Sexual Reproduction in Flowering Plants
262714
What type of pollination takes place in Vallisneria?
1 Male flowers are carried by water currents to female flowers at surface of water.
2 Pollination occurs in submerged condition by water.
3 Flowers emerge above surface of water and pollination occurs by insects.
4 Flowers emerge above water surface and pollen is carried by wind.
Explanation:
Pollination in Vallisneria is a type of epihydrophily, which is pollinated by water. Vallisneria is a dioecious plants, meaning that male and female plants are separate. The male flowers are small and detach from the plant when they mature. They then float on the surface of water. The female flowers have long stalks that allow them to reach the surface of water. The pollen from the male flowers is carried by water currents to the female flowers, where it pollinate them.
NEET (Odisha)-2019
Sexual Reproduction in Flowering Plants
262744
Jaculators are present in
1 none of these
2 ruellia
3 eeballium
4 impatiens
Explanation:
Jaculators are present in Ruellia. It is a mechanism of seed dispersal. In this mechanism, capsules are produced by the pollinated flowers have small hook-like outgrowth called retinaculum or Jaculators attached to the seeds. When the capsule dries, it breaks and the retinaculum throws the seeds away from the parent plant. The dispersal of seeds can be done by different means. It can be biotic or abiotic vectors.
Haryana PMT-2007
Sexual Reproduction in Flowering Plants
262722
Mesogamy is
1 fusion of male and female gametes
2 fusion of physiologically similar and morphologically different gametes
3 entry of pollen tube through integuments
4 None of the above
Explanation:
Mesogamy is a type of fertilization in which the pollen tube enters the ovule through the integuments, which are the protective layers of the ovule. It is found in all Cucurbit plants such as pumpkins, Cucumbers and melons.
262708
Which of the following is incorrect for wind pollinated plants?
1 Pollen grains are light and non-sticky
2 Well exposed stamens and stigma
3 Many ovules in each ovary
4 Flowers are small and not brightly coloured
Explanation:
Wind pollinated flowers one characterized by single ovule in each ovary, small and inconspicuous, colorless and nectar-less flowers, light and sticky pollen grains, well exposed stamens and sticky stigma. All these factors contribute to the high probability of pollination and thus, fertilization of flowers.
NEET-2020 Phase-II
Sexual Reproduction in Flowering Plants
262710
Which of the following are the important floral rewards to the animal pollinators ?
1 Nectar and pollen grains
2 Floral fragrance and calcium crystals
3 Protein pellicle and stigmatic exudates
4 Colour and large size flower
Explanation:
Nectar is a sugar liquid that provides a source of energy for many pollinators, including bees, butterflies, and hummingbirds. Pollen grains contains essential proteins, fast and other nutrients making them a valuable food source for containg pollinators like bees.
AIPMT-2015
Sexual Reproduction in Flowering Plants
262714
What type of pollination takes place in Vallisneria?
1 Male flowers are carried by water currents to female flowers at surface of water.
2 Pollination occurs in submerged condition by water.
3 Flowers emerge above surface of water and pollination occurs by insects.
4 Flowers emerge above water surface and pollen is carried by wind.
Explanation:
Pollination in Vallisneria is a type of epihydrophily, which is pollinated by water. Vallisneria is a dioecious plants, meaning that male and female plants are separate. The male flowers are small and detach from the plant when they mature. They then float on the surface of water. The female flowers have long stalks that allow them to reach the surface of water. The pollen from the male flowers is carried by water currents to the female flowers, where it pollinate them.
NEET (Odisha)-2019
Sexual Reproduction in Flowering Plants
262744
Jaculators are present in
1 none of these
2 ruellia
3 eeballium
4 impatiens
Explanation:
Jaculators are present in Ruellia. It is a mechanism of seed dispersal. In this mechanism, capsules are produced by the pollinated flowers have small hook-like outgrowth called retinaculum or Jaculators attached to the seeds. When the capsule dries, it breaks and the retinaculum throws the seeds away from the parent plant. The dispersal of seeds can be done by different means. It can be biotic or abiotic vectors.
Haryana PMT-2007
Sexual Reproduction in Flowering Plants
262722
Mesogamy is
1 fusion of male and female gametes
2 fusion of physiologically similar and morphologically different gametes
3 entry of pollen tube through integuments
4 None of the above
Explanation:
Mesogamy is a type of fertilization in which the pollen tube enters the ovule through the integuments, which are the protective layers of the ovule. It is found in all Cucurbit plants such as pumpkins, Cucumbers and melons.
262708
Which of the following is incorrect for wind pollinated plants?
1 Pollen grains are light and non-sticky
2 Well exposed stamens and stigma
3 Many ovules in each ovary
4 Flowers are small and not brightly coloured
Explanation:
Wind pollinated flowers one characterized by single ovule in each ovary, small and inconspicuous, colorless and nectar-less flowers, light and sticky pollen grains, well exposed stamens and sticky stigma. All these factors contribute to the high probability of pollination and thus, fertilization of flowers.
NEET-2020 Phase-II
Sexual Reproduction in Flowering Plants
262710
Which of the following are the important floral rewards to the animal pollinators ?
1 Nectar and pollen grains
2 Floral fragrance and calcium crystals
3 Protein pellicle and stigmatic exudates
4 Colour and large size flower
Explanation:
Nectar is a sugar liquid that provides a source of energy for many pollinators, including bees, butterflies, and hummingbirds. Pollen grains contains essential proteins, fast and other nutrients making them a valuable food source for containg pollinators like bees.
AIPMT-2015
Sexual Reproduction in Flowering Plants
262714
What type of pollination takes place in Vallisneria?
1 Male flowers are carried by water currents to female flowers at surface of water.
2 Pollination occurs in submerged condition by water.
3 Flowers emerge above surface of water and pollination occurs by insects.
4 Flowers emerge above water surface and pollen is carried by wind.
Explanation:
Pollination in Vallisneria is a type of epihydrophily, which is pollinated by water. Vallisneria is a dioecious plants, meaning that male and female plants are separate. The male flowers are small and detach from the plant when they mature. They then float on the surface of water. The female flowers have long stalks that allow them to reach the surface of water. The pollen from the male flowers is carried by water currents to the female flowers, where it pollinate them.
NEET (Odisha)-2019
Sexual Reproduction in Flowering Plants
262744
Jaculators are present in
1 none of these
2 ruellia
3 eeballium
4 impatiens
Explanation:
Jaculators are present in Ruellia. It is a mechanism of seed dispersal. In this mechanism, capsules are produced by the pollinated flowers have small hook-like outgrowth called retinaculum or Jaculators attached to the seeds. When the capsule dries, it breaks and the retinaculum throws the seeds away from the parent plant. The dispersal of seeds can be done by different means. It can be biotic or abiotic vectors.
Haryana PMT-2007
Sexual Reproduction in Flowering Plants
262722
Mesogamy is
1 fusion of male and female gametes
2 fusion of physiologically similar and morphologically different gametes
3 entry of pollen tube through integuments
4 None of the above
Explanation:
Mesogamy is a type of fertilization in which the pollen tube enters the ovule through the integuments, which are the protective layers of the ovule. It is found in all Cucurbit plants such as pumpkins, Cucumbers and melons.