Tag: agents of pollination

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Multiple choice biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

The process of transfer of pollen grains from anther to stigmatic surface of flower with the help of water is

  1. Anemophily

  2. Hydrophily

  3. Zoophily

  4. Ornithophily
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The process of transfer of pollen grains from the anther to stigmatic surface of the flower with the help of water is hydrophily. Pollination by water is quite rare in flowering plants and is limited to about 30 genera, mostly monocots, e.g. freshwater plants like Vallisneria, Hydrilla; marine water plants like Zostera. Light unwettable pollen grains are present in these plants. Pollen grains are surrounded by mucilaginous covering, hence protected from wetting. Stigma is long, sticky and unwettable.

Pollination by water may occur at two places: 
  1. Epihydrophily: It occurs on the surface of the water. e.g. Vallisneria.
  2. Hypohydrophily: It occurs beneath the surface of the water. e.g. Zostera.

Multiple choice biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

Choose the mismatched option.

  1. Wind - Cannabis - Anemophily

  2. Water - Zostera - Hydrophily

  3. Insects - Salvia - Entomophily

  4. Birds - Adansonia - Ornithophily

  5. Bats - Kigelia - Chiropterophily
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
• Pollination by means of wind is called Anemophily. Example, Cannabis.
• Pollination by means of water is called Hydrophily. Example, Zostera.
• Pollination by means of insects is called Entomophily. Example, Salvia.
• Pollination by means of birds is called Ornithophily. Example, Begonia.
• Pollination by means of bats is called Chiropterophily. Example, Kigelia.
Hence, the mismatched pair is D, because Adansonia is a plant which is pollinated by bats, not by birds.
So, the correct answer is D.
Multiple choice biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

Pollination in Lotus is carried out by

  1. Wind

  2. Water

  3. Insects

  4. All the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Lotus has bisexual flowers but anthers and stigma mature at different times so self pollination doesn't occur. Thus, Lotus is cross-pollinated by beetles. Beetles are attracted to the Lotus flower by the odour of the nectar. Beetle enter the flower at night and stays there for the whole night. The flower opens in the morning and beetle visits another flower at night. Thus, as the beetle visits different flowers, pollen from one flower are transferred to the stigma of different flowers because pollen get attached to the body of the beetles. Hence, this type of cross-pollination occurs in Lotus by means of insects i.e. beetles. So, the correct answer is C.
Multiple choice biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

Entomophilous flowers are related to

  1. Honey bees

  2. Wind

  3. Water

  4. Hairy Mammals
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Entomophilous flowers are the flowers that are pollinated by insects. From all the options given in the question, honey bees are the insects. So, entomophilous flowers are related to honey bees as honey bees pollinate them.
So, the correct answer is A.
Multiple choice biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

Which of the following features is/ are common to both wind and water pollinated flowers?
I. Pollen grains are long and ribbon-like
II. Stigma is large and feathery
III. Flowers are not colourful
IV. Flowers do not produce nectar.

  1. III and IV

  2. II and III

  3. I and II

  4. II

  5. I
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Both wind and water pollinated flowers typically lack bright colors, nectar, and scent, as they do not need to attract animal pollinators. They rely on the physical movement of the medium to transport pollen.

Multiple choice biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

Butterflies pollinate

  1. Bluish flowers

  2. Violet flowers

  3. Reddish flowers

  4. Purple flowers
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Butterflies are attracted to the flowers that are scented, showy and bright in color. Butterflies can see the colors in ultra violet range and their most preferred color of flowers for pollination is blue. Hence, butterflies pollinate bluish flowers.
So, the correct answer is A.
Multiple choice biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

"Pollen grains are protected by a mucilaginous covering and having a specific gravity". This is characteristic of which type of pollination.

  1. Anemophily

  2. Entomophily

  3. Hydrophily

  4. Zoophily
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In hydrophily (pollination by water), pollen grains are often protected by a mucilaginous covering to prevent wetting and have a specific gravity that allows them to float or remain submerged at the level of the stigma.

Multiple choice biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

Select the plants pollinated by water.
(a) Water Hyacinth
(b) Zostera
(c) Amorphophallus
(d) Vallisneria
(e) Yucca.

  1. a, d and e

  2. b and e

  3. b and d

  4. b, c, d

  5. a, b and d
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Zostera is a marine seagrass and Vallisneria is a freshwater plant, both of which are pollinated by water. Water Hyacinth and Amorphophallus are pollinated by insects.

Multiple choice biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

Insects visit flowers to help in pollination.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pollination is the transfer of pollen from a male part of a plant (anthers) to a female part of a plant (stigma), enabling later fertilisation and the production of seeds, most often by an animal or by the wind. Pollination is a very important part of the life cycle of plants. Entomophily or insect pollination is a form of pollination whereby pollen of plants, is distributed by insects. A major role of the insect is that of pollinator, meaning they transfer pollen from plant to plant (or sometimes within the same plant), which results in the development of a seed.

So the given statement is true.

Multiple choice biology pollination and fertilization agents of pollination environmental conservation and biodiversity pollination, fertilization and development of endosperm and embryo

Which one is applicable to insect pollinated flowers?

  1. Flowers are very small produced in large quantities

  2. Flowers are not prominent and without nectar

  3. Flowers are conspicuous and scented having nectar

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When the flowers are pollinated by insects, it is called entomophily. Such flowers has evolved mechanisms to make themselves more appealing or conspicuous to insects by having bright colors or scented flowers, nectar or appealing shapes and patterns.
Thus, the correct answer is option (C), 'Flowers are conspicuous and scented having nectar'.