Question

Transgenic plants are developed by
A. Introducing foreign genes
B. Introducing gene mutations
C. Deleting certain chromosome parts
D. Stopping spindle formation

Answer 1

Transgenic plants are plants that have had one or more genes from another species inserted into their genome by genetic engineering. Agrobacterium tumefaciens-mediated transformation and the biolistic method (in which a heavy metal is coated with plasmid DNA and blasted into cells) are two techniques.
The primary goal of transgenic plant development is to create crops with optimum features, high quality, and high yield. Plants have been discovered to be capable of acting as a factory for medicinal protein manufacture, in addition to being advantageous to agriculture.

Complete answer:
Option A: Transgenic plants are plants that have been genetically modified using the recombinant DNA technology to create plants with new features. They belong to the category of genetically engineered organisms. Other organisms' genes can be inserted into transgenic plants to make transgenic plants.
So option A is correct.
Option B: Transgenic plants are those that are created by inserting foreign DNA into a cell and growing a plant from it. Transgenic plants include maize, rice, brinjal, cabbage, cauliflowers, potato, and tomato, to name a few.
So option B is not correct.
Option C: The technique of genetic transformation can be used to create transgenic organisms. It is accomplished by inserting an exogenous gene known as a transgene into the genome of the organism. As a result, the organism develops a new trait that can be passed down to its descendants.
So option C is not correct.
Option D: Plants that have been genetically modified using recombinant DNA technology to develop new traits are known as transgenic plants. They fall under the heading of genetically modified organisms. To create transgenic plants, genes from other organisms can be added into transgenic plants.
So option D is not correct.

So option A is the correct answer.

Note:
Plant molecular biology and genetic engineering technology have advanced rapidly since the introduction of transgenic plants. There have been numerous transgenic plants generated with essential productive agronomic features such as insect resistance and drought tolerance. The use of genetic engineering in staple crops has proven to be an efficient way to combat malnutrition. A wide range of crops have been successfully engineered to increase production and nutritional value.