Practice Questions

TLS Online TPP Program

#Question id: 2032

which is not a function IgD?

#Unit 4. Cell Communication and Cell Signaling

It is involved in the production of the antibody by B cells.
It comprises less than 1% of the total antibody content in serum
It acts as a receptor on B cell surface and participates in B cell activation and differentiation.
It exists in both monomeric as well as dimeric forms.

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TLS Online TPP Program

#Question id: 22953

#Unit 5. Developmental Biology

The MADS box gene form tetramers that bind to

TLS Online TPP Program

#Question id: 22954

#Unit 5. Developmental Biology

According to the which Model, floral organ identity is regulated by tetrameric complexes of the ABCE proteins

TLS Online TPP Program

#Question id: 22955

#Unit 5. Developmental Biology

Based On ABC model during flower development, loss of class A activity results the formation of only stamen and carpel. Which of the flowering floral organs identity genes controls the class A activity ?

TLS Online TPP Program

#Question id: 22956

#Unit 5. Developmental Biology

Individual and overlapping expression of homeotic genes in adjacent whorl of a flower determine the pattern of floral organ development. In an Arabidopsis mutant, floral organs are distributed as follows

Loss of function mutation in which one of the following genes would have caused the above pattern of floral organs development

TLS Online TPP Program

#Question id: 22957

#Unit 5. Developmental Biology

floral organ development is controlled by overlapping expressions of A class , B class and C class genes in different whorls. In an Arabidopsis mutant, the floral whorls had following pattern:

Sepal àSepal àcarpel àcarpel

Mutation in which one of the following class of gene causes above pattern.

TLS Online TPP Program

#Question id: 22958

#Unit 5. Developmental Biology

Which of the following statement is correct regarding to the flower development in Arabidopsis?