CBSE Questions for Class 12 Medical Biology Biotechnology And Its Applications Quiz 6 - MCQExams.com

• As a mule is produced by crossing a female horse with a male donkey, it can be said to be an interspecific hybrid.
• Swarming can be defined as the process by which a queen bee forms a new colony. Consequently, the term ‘swarms’ is used to refer to the colonies of honey bees.
• Cross-breeding enables the production of hybrids that are superior in one respect or the other to their respective parents.
• In MOET, the female is made to produce more eggs than normal, usually 6-8. After the fertilization of these eggs with sperms, these fertilized eggs are non-surgically removed and transferred to other females.

$$\textbf{Correct answer: D}$$ 

$$\textbf{Option (A):}$$ 

$$\bullet$$ Ignitability defines the components which are flammable. This is a hazardous characteristic when it comes to storing the component.

$$\textbf{Option (B):}$$ 

$$\bullet$$ Corrosivity is one of the hazardous traits that shows that the components can rust or decompose. 

$$\bullet$$ Under the action of specific chemicals, many of the components show corrosive character. 

$$\textbf{Option (C):}$$ 

$$\bullet$$ Toxicity means the specific component which is poisonous. 

$$\bullet$$ Some of the components can be toxic to organisms while others can be toxic to the whole environment. 

$$\bullet$$ This is one of the most hazardous traits in any component. 

$$\textbf{Option (D):}$$ 

$$\bullet$$ The products formed after the biochemical processes in the bioreactor may show these hazardous traits. 

$$\bullet$$ All the given states are hazardous and hence there are warnings given in the storage units where they are kept or produced.

Hence, the correct answer is option (D).

$$\textbf{Correct answer: C}$$ 

$$\textbf{Option (A):}$$ 

$$\bullet$$ Embryonic stem cells are pluripotent stem cells which are present in the inner cell mass of the blastocyst cells.

$$\bullet$$ These cells are responsible for generating the different tissues and organs in the organism after differentiation.

$$\textbf{Option (B):}$$ 

$$\bullet$$ Adult stem cells are specific stem cells present in the different organs from where new cells originate. 

$$\bullet$$ It is used for the regeneration of old cells and also the generation of new cells in a postnatal lifetime.

$$\textbf{Option (C):}$$ 

$$\bullet$$ In the umbilical cord, there are hematopoietic stem cells that can give rise to RBCs and WBCs in the blood. 

$$\bullet$$ This is why the stem cells found in the umbilical cord are cord blood stem cells. 

$$\bullet$$ Patients suffering from leukemia are provided with these stem cells so that it can be differentiated to produce normal WBC cells. 

Hence, the correct answer is option (C).