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TLS Online TPP Program

#Question id: 40162

Q. Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): In angiosperms, the endosperm is triploid (3n).
Reason (R): It is formed by the fusion of one male gamete with the egg cell.
In light of the above statements, choose the correct answer from the options given below:

#Botany
  1. Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
  3. (A) is true but (R) is false
  4. (A) is false but (R) is true
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TLS Online TPP Program

#Question id: 40478

#Applied Microbiology

Consider the following statements about Macrophages:

  1. They are phagocytic cells.

  2. They express MHC Class II molecules on their surface.

  3. They are classified as granulocytes like Basophils.

    Which of the statements given above are correct?
TLS Online TPP Program

#Question id: 40479

#Applied Microbiology

 Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Dendritic cells are critical for initiating a primary immune response.

Reason (R): They are the only antigen-presenting cells capable of stimulating naive T cells.
TLS Online TPP Program

#Question id: 40480

#Applied Microbiology

Match the Immune Cell (List I) with its primary characteristic/function (List II).

List I (Cell Type)List II (Characteristic)
A. B cell1. Granulocyte involved in allergic responses; releases histamine.
B. Dendritic cell2. Produces antibodies; acts as an APC.
C. Basophil3. Phagocyte; acts as a scavenger and APC.
D. Macrophage4. Most effective APC; bridge between innate and adaptive immunity.
TLS Online TPP Program

#Question id: 40481

#Applied Microbiology

Which specific chemical element, released from CFCs in the stratosphere, acts as a catalyst to break down Ozone (O3) into Oxygen (O2)
TLS Online TPP Program

#Question id: 40482

#Applied Microbiology

 Which international treaty was signed specifically to control the emission of Ozone Depleting Substances (ODS) like CFCs?
TLS Online TPP Program

#Question id: 40483

#Applied Microbiology

While HFCs (Hydrofluorocarbons) were introduced to replace CFCs because they do not deplete the ozone layer, they are still problematic. Why?