Tag: zoology

Questions Related to zoology

Gene from the Bacillus thuringiensis is introduced into soyabean.

zoology applications of biotechnology biotechnological regulations pcr asexual modes of reproduction

  1. True

  2. False

Show answer
Correct Option: B
Explanation:

Genetically modified organisms are those whose genome is altered by transgene using the genetic engineering techniques to produce genetically modified foods. The genome of the modified organisms is altered by the gene of unrelated organisms. 

GM Soybeans are produced for various benefits and one of them is glyphosate resistance which is done by introducing the genes from Agrobacterium tumifacians  and the resulted GM plants are called as Roundup Ready Soybeans.
Therefore the statement is false because Bacillus thuringiensis genes are not used for GM Soybeans. It is used for Bt-cotton.

The genetically modified (GM) brinjal in India has been developed for

zoology applications of biotechnology biotechnological regulations pcr asexual modes of reproduction

  1. Enhancing mineral content

  2. Drought resistance

  3. Insect resistance

  4. Enhancing shelf life

Show answer
Correct Option: C
Explanation:

Bacillus thuringiensis (Bt) is a Gram-positive bacterium that produces crystals during sporulation. These crystals comprise ~130 kDa protoxins called crystal proteins which are potent and highly specific insecticides. Once ingested by specific host, these crystals dissolve in the alkaline conditions of the gut thereby activating the protoxins. The active toxins then bind to receptors on midgut epithelial cells, become inserted into the plasma membrane where they form pores leading to cell death through osmotic lysis. This special feature of Bt toxin was explored in genetic engineering to produce bioinsecticidal Bt brinjal plants. Correct answer is C.

The genetically modified crops (GM) may contain the gene of interest from

zoology applications of biotechnology biotechnological regulations pcr asexual modes of reproduction

  1. Closely related species

  2. Distantly related species

  3. Bacteria or animals

  4. All the above

Show answer
Correct Option: D

Maize hybrids have been developed for higher amount of

zoology applications of biotechnology biotechnological regulations pcr asexual modes of reproduction

  1. Lysine

  2. Leucine

  3. Methionine

  4. Cysteine

Show answer
Correct Option: A
Explanation:
  • Maize hybrids with higher lysine content were developed to improve the protein in corn.
  • This hybrid maize provides substantially higher levels of two essential amino acids - Lysine and tryptophan.
  • So the correct answer is 'Lysine'

RR-21 is high yielding variety of

zoology applications of biotechnology biotechnological regulations pcr asexual modes of reproduction

  1. Rice

  2. Wheat

  3. Gram

  4. Sugarcane

Show answer
Correct Option: B
Explanation:

  • Wheat is a  cereal grain which is a worldwide staple food. Wheat is an important source of carbohydrates and has a protein content of about 13%, which is relatively high compared to other major cereals.
  • RR-21 (Sonalika) is a high yielding variety of wheat which is an early maturing single dwarf wheat with wide adaptation and good attractive amber grains. The variety is very suitable for late sowings. It is resistant to rusts.
  • Other varieties of wheat are kalyansona and girija.
So, the correct answer is 'Wheat'

Which of the following is not a genetically modified crop plant? 

zoology applications of biotechnology biotechnological regulations pcr asexual modes of reproduction

  1. Golden rice

  2. Basmati rice

  3. Bt-corn

  4. Flavr savr tomato

Show answer
Correct Option: B
Explanation:

Golden rice is produced by genetic engineering to biosynthesize beta-carotene. Genetically modified corn is a genetically modified crop. Maize strains have been genetically engineered to acquired traits, including resistance to pests and to herbicides. Flavr Savr a genetically modified tomato was the first commercially grown genetically engineered food for human consumption.  Basmati rice GM crops have increased the reliance of farmers on herbicides and leading to new weed problems as well as to many legal problems.  

So the correct answer is'Basmati rice'.

Limbless lizard is ____________.

zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

  1. Draco

  2. Ophisaurus

  3. Amblyrhynchus

  4. Moloch

Show answer
Correct Option: B
Explanation:

Ophisaurus ,occurs in southern Europe, is a limbless lizard 

In which of the following subclasses of reptiles, the skull has a solid roof ____________.

zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

  1. Anapsida

  2. Diapsida

  3. Synapsida

  4. Parapsida

Show answer
Correct Option: A
Explanation:

Anapsida has a solid roof due to the absence of any temporal vacuities on skull.

Ophisaurus belongs to _____________.

zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

  1. Amphibia

  2. Pisces

  3. Reptilia

  4. Aves

Show answer
Correct Option: C

A non-poisonous snake is______________.

zoology animal diversity - ii (phylum: chordata) amphibia and reptilia amphibia classifications of chordata

  1. Viper

  2. Python

  3. Bungarus

  4. Sea snake

Show answer
Correct Option: B
Explanation:
  • Vipers are a family of venomous snakes, the Viperidae. All have long, hinged fangs that dig deep into their prey and inject venom. 
  • Sea snakes are venomous. They are typically found in Indo-Australian and Southeast Asian waters.  
  • Bungarus is a genus of venomous elapid snakes, the kraits found in South and Southeast Asia.  
  • Pythons are a family of non-venomous snakes, the Pythonidae found in Africa and Asia. 
  • so the correct answer is option B.