Tag: gm crops

Questions Related to gm crops

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'.

Golden rice is a transgenic crop of the future with the following improved trail

biology biotechnology and genetic engineering biotechnology in agriculture gm crops transgenic organisms

  1. insect resistance

  2. high lysine (essential amino acid) content

  3. high protein content

  4. high vitamin-A content

Show answer
Correct Option: D

Read the following statements and select the incorrect one.

biology reproductive health stds and infertility gm crops biotechnology

  1. Semen is preserved for artificial insemination by heating

  2. Mating of an animal within the same breed, but having no common ancestors on either side of their pedigree upto 4 - 6 generations is called as outcrossing

  3. Example of interspecific hybridisation is mule

  4. Hinny is a hybrid between the female ass and stallion.

Show answer
Correct Option: A

When a species of an organism cannot form a zygote but the zygote survives, the phenomenon is known as

biology reproductive health stds and infertility gm crops biotechnology

  1. Hybrid vigour

  2. Hybrid sterility

  3. Hybrid zygote

  4. Hybrid fertility

Show answer
Correct Option: B
Explanation:

Hybrid zygotes sometimes develop into adults, such as mules (hybrids between female horses and male donkeys), but the adults fail to develop functional gametes and are sterile. This phenomenon is called as hybrid sterility. Thus, option B is correct. 

Heterosis, also called hybrid vigour, the increase in such characteristics as size, growth rate, fertility, and yield of a hybrid organism over those of its parents. Plant and animal breeders exploit heterosis by mating two different pure-bred lines that have certain desirable traits. Thus, option A is wrong. 
In some cases, no barriers exist to mating between members of different species. In these cases, the zygote formed is called a hybrid zygote. Thus, option C is wrong. 
Fertility ability of a hybrid is called as hybrid fertility. Thus, option D is wrong.

The ova are released by hormone induction and fertilization by artificial insemination and then embryo is stored at 4$^o$C for several years. This technique is known as

biology reproductive health stds and infertility gm crops biotechnology

  1. Artificial insemination

  2. Embryo transplantation

  3. Super ovulation

  4. Preservation of embryo

Show answer
Correct Option: D
Explanation:

Embryo cryopreservation or preservation of embryo is generally performed as a component of in vitro fertilization which generally also include ovarian stimulation, ovarian hyperstimulation or superovulation, egg retrieval, artifical insemination and embryo transfer.

Frosty from frozen embryo of boar was created by

biology reproductive health stds and infertility gm crops biotechnology

  1. Wilmut

  2. Wilmut and Campbell

  3. Nirenberg

  4. Holley

Show answer
Correct Option: A

Bull semen for the purpose of artificial insemination is stored in 

biology reproductive health stds and infertility gm crops biotechnology

  1. Ice

  2. Liquid oxygen

  3. Liquid nitrogen

  4. Liquid CO$ _2$

Show answer
Correct Option: C
Explanation:

Artificial insemination is a globally accepted method of breeding cattle and is also effective for other species. Semen can be stored deep-frozen in liquid nitrogen, in a chilled liquid form or at room temperature. Its low temperature of $-196^0$C and inert caracteristics prevent the deterioration of biological quality. Hence, option C is correct.

G. hirsutum is

botany biotechnology and genetic engineering stds and infertility gm crops biotechnology

  1. New World Tetraploid

  2. Old World Tetraploid

  3. New World Diploid

  4. Old World Diploid

Show answer
Correct Option: A