Tag: botany

Questions Related to botany

Golden rice is a genetically modified crop plant where the incorporated gene is meant for biosynthesis of.

botany biotechnology and its applications biotechnology in agriculture gm crops transgenic organisms

  1. Vitamin-B

  2. Vitamin-C

  3. Omega-$3$

  4. Vitamin-A

Show answer
Correct Option: D
Explanation:

golden rice is a genetically modified crop plant where the incorporated gene. Golden rice is a variety of rice produced through genetic engineering to biosynthesize beta-carotene, a precursor of vitamin A, in the edible parts of rice.

So, the correct option is 'Vitamin A'.

RNA interference which is employed in making tobacco plant resistant to Meloidegyne incognita is essentially involved in

botany biotechnology and its applications biotechnology in agriculture gm crops transgenic organisms

  1. preventing the process of replication of DNA

  2. preventing the process of translation of mRNA

  3. preventing the process of splicing of hnRNA

  4. preventing the process of transcription

Show answer
Correct Option: B
Explanation:

RNA interference is a gene-silencing process that blocks the expression of genes in the parasite when it enters the host's body.RNA is a method adopted to prevent infestation of roots of tobacco plants by a nematode Meloidogyne incognita. In RNA, a complementary RNA binds to mRNA to form a ds RNA that cannot translate and hence, its expression is blocked.

So, the correct option is 'Preventing the process of translation of mRNA'.

Which part of the tobacco plant is infected by Meloidogyne incognita?

botany biotechnology and its applications biotechnology in agriculture gm crops transgenic organisms

  1. Leaf

  2. Stem

  3. Root

  4. Flower

Show answer
Correct Option: C
Explanation:

Roots of the tobacco plants are infected by Meloidogyne incognita. RNA I method is used to develop resistance in these plants against infection.

So, the correct option is 'Root'.

The pollination by ........ is called as zoophily.

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

  1. Wind

  2. Water

  3. Animals

  4. None of the above

Show answer
Correct Option: C
Explanation:
Pollination carried by the animals is known as zoophily. The coloured corolla attracts insects for pollination. It has sticky pollens which attach to the insect and are transferred from the anther to the stigma of the flower. For example, Arctium.
Pollination carried by the wind is known as anemophily. It has lighter pollens or winged pollens which are easily carried by the wind. For example, pine.
Pollination carried by water is hydrophilly. It has lighter pollen which is easily carried by the water currents. For example, hydrilla.

In Chiropterophily, pollination is performed by

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

  1. Bats

  2. Birds

  3. Squirrels

  4. Insects

Show answer
Correct Option: A
Explanation:
Pollination which occurs by means of bats is called Chiropterophily.
Pollination which occurs by means of wind is called Anemophily.
Pollination which occurs by means of insects is called Entomophily.
Pollination may also occur by various other pollinating agents such as squirrels but any specific term is not given for such type of pollination.
So, the correct answer is A.

Pollination performed by bats is

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

  1. Myrmecophily

  2. Entomophily

  3. Ornithophily

  4. Chiropterophily

Show answer
Correct Option: D
Explanation:
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.
Chiropterophily is the pollination of flowers by means of bats.
So, the correct answer is D.

Read the following matches.

(i) Wild pea Petiolar tendril
(ii) Sweet pea Leaflet tendril
(iii) Gloriosa  superba  Stipular tendril
(iv) Australian Acacia Phyllodes

Which of these are correct?

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

  1. (ii) and (iii)

  2. (i) and (iv)

  3. (ii), (iii) and (iv)

  4. (ii) and (iv)

Show answer
Correct Option: A
Explanation:
 Sweetpea (Lathyrus odoratus) Leaflet tendril 
 Australian Acacia  Phyllodes

Gloriosa Superba comes under the category leaf tip tendril rather stipular tendril. Wild pea is not a petiole tendril. Correct matches are :

 
So the correct option is "ii&iv".

Which of the following is ornithophilous?

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

  1. Erythrina

  2. Agave

  3. Grevillea

  4. All the above

Show answer
Correct Option: D
Explanation:
Ornithophilous plants are the plants in which flowers are pollinated by means of birds. Examples of Ornithophilous plants are Erythrina, Agave, and Grevillea. As all the options given in the question are of Ornithophilous plants.
So, the correct answer is D.

In most of the angiosperms, pollination predominantly occurs by .............

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

  1. Air

  2. Water

  3. Insects

  4. Birds

Show answer
Correct Option: C
Explanation:

Pollination is the process of transfer of pollen grain from the anther to stigma. Angiosperm is the flower producing plant that attracts insects for pollination. Insect pollination not only conserves energy for the plant, but insects may play a part in angiosperm diversity. The zoophilous pollen species have adaptations for pollination by generalist insects (39%), specialized pollen-collecting insects (27%) and other specialized pollinators (10%).

Pollination by snail and slug is known as

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

  1. Ornithophilous

  2. Chiropterophilous

  3. Entomophilous

  4. Malacophilous

Show answer
Correct Option: D
Explanation:

There are different types of pollination depending upon the agent involved in it. Pollination by bird is known as ornithophilous pollination. Chiropterophilous is a type of pollination in which pollination occurs by bats. Entomophilous is a type of pollination in which pollination occurs by insects. Pollination by snail and slug is known as malacophilous pollination. 

Thus, the correct answer is option D.