Tag: biotechnology

Quizzes (4) Questions (393)

Questions Related to biotechnology

Multiple choice biology breeding and biotechnology method of plant breeding for crop improvement plant breeding for food production biotechnology

Breeding for disease resistance requires

  1. A good source of resistance

  2. Planned hybridisation

  3. Disease test

  4. All the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Breeding for disease resistance is a comprehensive process that requires identifying a source of resistance, planning the hybridization, and rigorously testing the progeny for resistance.

Multiple choice biology breeding and biotechnology method of plant breeding for crop improvement plant breeding for food production biotechnology

Match the columns:

I II
a Mutation breeding 1 Johannsen
b Inbreeding depression 2 Karpechenko
c Pureline selection 3 Darwin
d Intergeneric hybridization 4 Staddler
5 Shull

  1. a-4, b-2, c-5, d-1

  2. a-4, b-5, c-2, d-1

  3. a-4, b-5, c-1, d-2

  4. a-5, b-4, c-1, d-2.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mutation breeding is associated with Staddler (4), Inbreeding depression with Shull (5), Pureline selection with Johannsen (1), and Intergeneric hybridization with Karpechenko (2).

Multiple choice biology breeding and biotechnology method of plant breeding for crop improvement plant breeding for food production biotechnology

The Ear cockier of wheat can be differentiated from Molya disease of wheat by the fact that in the former.

  1. Plants become dwarf, stem and leaves become twisted spike lets get distorted and grains get replaced by brown stony structures

  2. Plants become pale, leaves turn yellow with reddish lip, roots get matted and fail to ear

  3. Root tips swell and cyst adheres to roots that turn brown and fall

  4. Show hypertrophy of stern and leaves and roots swell
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ear cockle of wheat is caused by the nematode Anguina tritici, which causes the formation of galls (brown stony structures) in place of grains and distorts the spikelets.

Multiple choice biology breeding and biotechnology method of plant breeding for crop improvement plant breeding for food production biotechnology

State whether the following statement is true or false.
Ability of an organism to resist disease is called as host resistance.

  1. True

  2. False

  3. Ambigous

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

Ability of an organism to resist disease is called host resistance. These plant varieties are developed under Integrated Pest Management to provide resistance against a particular variety of pest. 

Example Bt Cotton a transgenic plant which has resistance to a certain kind of disease called the boll disease.
So, the given statement is true.

Multiple choice biology breeding and biotechnology method of plant breeding for crop improvement plant breeding for food production biotechnology

Which one of the following is the indigenous breed of chickens ?

  1. plymouth rock

  2. white leghorn

  3. aseel

  4. rhode island red
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Aseel is a pure indigenous breed of chicken originated from India and Pakistan. They are used for cock fighting. They are very large breed of chicken from subcontinents. This breed is good in high yield of meat but it is not good for egg production. The average weight of cock varies from 4 to 5 kg and hens 3 to 4 kg. 

Multiple choice biology breeding and biotechnology method of plant breeding for crop improvement plant breeding for food production biotechnology

Which one of following breeds of cattle is a cross-breed and high milk yielding ?

  1. Sahiwal

  2. Karan-Swiss

  3. Tharparkar

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

Karan Swiss is the hybrid variety and high milk yielding breed of cow. It is the hybrid breed of Taurine and Zebu. Taurine is used for milk production, while Zebu is used for flesh.

Multiple choice biology breeding and biotechnology method of plant breeding for crop improvement plant breeding for food production biotechnology

Which pathogen causes the blast disease of rice?

  1. Cercospora personata

  2. Pyricularia oryzae

  3. Xanthomonas citri

  4. Tungro virus
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Blast disease in rice is caused by the fungus Magnaporthe oryzae which was earlier known as Pyricularia oryzae. Different parts of the plants are affected by the fungus. The blast can occur wherever blast spores are present. Rice can have blast in all growth stages. There are lesions formed on the leaf, panicle and neck region of the plant. There is great loss in yield due to this disease affecting the rice plants.
Thus, the correct answer is option B.
Multiple choice biology reproductive health stds and infertility gm crops biotechnology

Read the following statements and select the incorrect one.

  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.
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice biology reproductive health stds and infertility gm crops biotechnology

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

  1. Hybrid vigour

  2. Hybrid sterility

  3. Hybrid zygote

  4. Hybrid fertility
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

Multiple choice biology reproductive health stds and infertility gm crops biotechnology
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

  1. Artificial insemination

  2. Embryo transplantation

  3. Super ovulation

  4. Preservation of embryo
Reveal answer Fill a bubble to check yourself
D Correct answer
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.