Tag: pollination, fertilization and development of endosperm and embryo

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Questions Related to pollination, fertilization and development of endosperm and embryo

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

Pollination by bats is called as

  1. Chiropterophily

  2. Ornithophily

  3. Malacophily

  4. Entomophily
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pollination is the transfer of pollens from the male anther to the female stigma. It is carried out by the help of animals, birds, insects, water and wind. Pollination carried out by bats is called chiropterophily. The pollination carried out by the birds is called ornithophily. The pollination carried out by snails is called malacophily. The pollination carried out by insects is called entomophily.

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

Pollination by snail and slug is called as .............. pollination.

  1. Entomophilous

  2. Malacophilous

  3. Ornithophilous

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

Pollination by agency of insects is known as entomophily or insect pollination. Bees, butterflies, moths and beetles are main pollinating insects. Insect pollinated flowers are large, conspicuous, bright coloured and have pleasant smell. They have nectarines on receptacles or on spurs at the base of flower whorls and produce nectar to attract insects. Option A is incorrect. Pollination by agency of birds is known as ornithophily. The common pollinating birds are squirrels, bats, snails etc. the bird pollinated flowers are colourful, mostly red, produce lots of nectar and also exhibit adaptations to protect nectar from insects. Option C is incorrect. Pollination by bats is known as chiropterophily. The plants produce large, bell shaped and attractive flowers that open at night and produce strong odours and nectar. Option D is incorrect. Pollination by snails and slug is called as malacophily. These flowers have long blooming period to facilitate access of pollen to snails. 

Thus, the correct answer is option B.

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

By tissue culture, indefinite number of plants from a small amount of parental tissue can be obtained. This technique is of great economic importance as ____________________________.

  1. New species can be generated

  2. Through somaclonal variation, a large number of variants can be isolated

  3. It is a useful method to multiply genetically uniform population of elite species

  4. Homozygous diploids can be obtained
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Tissue culture technology is grounded on the fact that the entire plant can be regenerated from explants. This capacity to produce a whole plant from any cell/explant is named totipotency. Individually these plants will be genetically identical to the original plant. Several important food plants like tomato, apple, banana, etc., can be generated on the commercial scale by this method.

Thus, the correct option is C.

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

Assertion : Chasmogamous flowers require pollinating agents.

Reason : Cleistogamous flowers do not expore their sex organs.

  1. Both assertion and reason are true and reason is a correct explanation of the assertion.

  2. Both assertion and reason are true but reason is not a correct explanation of the assertion.

  3. Assertion is true but Reason is false

  4. Both Assertion and Reason are false

  5. Assertion is false but Reason is true
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The majority of angiosperms bear chasmogamous flowers, which means the flowers expose their mature anthers and stigma to the pollinating agents. There is another group of plants which set seeds without exposing their sex organs. Such flowers are called cleistogamous and the phenomenon cleistogamy.

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

Night blooming flowers attract pollinating insects with the help of

  1. Aroma

  2. Nectar

  3. Edible pollen

  4. All of the above.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
In night, colour of flowers are not detected by insects, so night blooming flowers are generally scented for attracting insects for pollination. Therefore, pollinators are attracted to their aroma.
So, the correct answer is A.
Multiple choice botany pollination, fertilization and development of endosperm and embryo agents of pollination environmental conservation and biodiversity pollination and fertilization

Pollination by ants is

  1. Malacophily

  2. Myrmecophily

  3. Entomophily

  4. Ornithophily
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Malacophily is the pollination of flowers by means of snails and slugs.
Myrmecophily is the pollination of flowers by means of ants.
Entomophily is the pollination of flowers by means of insects.
Ornithophily is the pollination of flowers by means of birds.
So, the correct answer is B.
Multiple choice botany pollination, fertilization and development of endosperm and embryo agents of pollination environmental conservation and biodiversity pollination and fertilization

Malacophily is pollination by

  1. Insects

  2. Birds

  3. Bats

  4. Snails and slugs
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Pollination which occurs by means of insects is known as Entomophily.
Pollination which occurs by means of birds is known as Ornithophily.
Pollination which occurs by means of bats is known as Chiropterophily.
Pollination which occurs by means of snails and slugs is known as Malacophily.
So, the correct answer is D.
Multiple choice botany pollination, fertilization and development of endosperm and embryo agents of pollination environmental conservation and biodiversity pollination and fertilization

Adansonia (Baobab Tree) is

  1. Malacophilous

  2. Ornithophilous

  3. Chiropterophilous

  4. Anemophilous
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
In Malacophilous plants, flowers are pollinated by snails and slugs. Example, some water plants such as Lemna and members of Poaceae.
In Ornithophilous plants, flowers are pollinated by means of birds. Example, Begonia is pollinated by the hummingbird.
In Chiropterophilous plants, flowers are pollinated by bats. Example, Adansonia (baobab tree).
In Anemophilous plants, flowers are pollinated by wind. Example, Maize, grasses etc.
So, the correct answer is C.