Red and far-red lights are perceived by plants through various photoreceptors including phytochromes. The red/far-red reversibility of seed germination was due to the-

a) photoreversibility of phytochrome

b) presence of red and far-red light at different fluence rate

c) Conversion of Pr to Pfr form through the effect of red light

d) equal proportion of red and far red light at same fluence rate

Which of the following combinations is correct?

TLS Online TPP Program

#Question id: 7176

#Unit 5. Developmental Biology

The metamorphic changes of frog development are brought about by following events.

(A) the secretion of the hormone thyroxine (T4) into the blood by the thyroid gland

(B) the degradation of T3 in the target tissues

(C) the conversion of (T4) into the more active hormone, triiodothyronine (T3) by the target tissues

Which of the following series is correct?

TLS Online TPP Program

#Question id: 16959

#Unit 4. Cell Communication and Cell Signaling

antigenic determinant is defined as a region of an antigen that makes contact with the antigen-combining region on an antibody. Which statement is true for Anti-isotype antibodies?

TLS Online TPP Program

#Question id: 18621

#Unit 13. Methods in Biology

Variants of PCR has been devised to enhance efficiency are

a) qPCR with SYBR, TaqMan and MB

b) nested PCR

c) Touchdown start PCR

d) hot start PCR

TLS Online TPP Program

#Question id: 9185

#Unit 9. Diversity of Life Forms

Plants are affected by an array of pathogens. Which of the following is a plant defense against disease?

TLS Online TPP Program

#Question id: 4493

#Unit 3. Fundamental Processes

An insulator is placed between the enhancer and the promoter, When bound by insulator-binding protein CTCF,