Application of Biotechnology in Agriculture- Bt Crops

Bt cotton is not:

_____ gene is found in Bacillus thuringiensis bacteria which code for an insecticidal protein.

Agrobacterium tumefaciens is a soil bacterium which is widely used for gene transfer.

Fill in the blank with the correct word given in the bracket.

Bt gene is found in Bacillus thuringiensis bacteria which code for an insecticidal protein. This gene is also known as _____ (cry/pro) gene. 

Bt toxin produced by Bacillus thuringiensis does not kill the producer because the toxin is

Write the name of Bollworm resistant genetically modified variety of cotton.

Assertion $\mathbf{\left(}\mathbf{A}\mathbf{\right)}\mathbf{:} \mathrm{Bt}$ transgenic crops are more tolerant to abiotic stresses.

Reason $\mathbf{\left(}\mathbf{R}\mathbf{\right)}\mathbf{:}\mathbf{ }\mathrm{Bt}$ toxins are coded by 'cry' genes.

In addition to the production of high yielding and disease-resistant varieties, genetic modification has:
i) helped to reduce post-harvest losses
ii) decreased the nutritional value of food
iii) reduced reliance on chemical pesticides
iv) decreased the efficiency of mineral usage by plants
v) produced crops that are resilient to environmental stresses
The correct combination is

Transgenic plant roundup ready soya beans are resistant to

The first transgenic plant is

Study the following statements and select the incorrect ones.
i. $\mathrm{Bt}^{\prime}$ in $\mathrm{Bt}$ cotton' indicates that it is a nongenetically modified crop produced through biotechnology.
ii. The anticoagulant 'hirudin' is being produced from transgenic Brassica napus seeds.
iii. 'FlaviSavr' transgenic tomatoes remain fresh for a longer period than the normal tomato variety.
iv. Golden rice is a transgenic variety of Oryza sativa, which is rich $\beta$ -carotene and helps to prevent colour blindness.

What is the precursor from which active toxin developed? (Prototoxin / Biotoxin/dioxin)

Fill in the blank with the correct option from the bracket.

Golden rice has gene for _____, which gives the grain a yellow colour appearance. (nitrogenase, beta-carotene, insulin)

A protoxin is an inactive toxin.

Bt toxin is coded by a gene named trp1.

Golden rice is a

The first genetically modified plant commercially used in India is _____. (Bt brinjal / Bt cotton / Bt wheat)

What are Bt crops? Explain in brief about how they are produced with a suitable example. 

What is transgenic plants? Describe about its development and utility.