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TLS Online TPP Program

#Question id: 5451

High heritability is best demonstrated in which of the following situations?

#Unit 8. Inheritance Biology

  1. Within a wild population of clover plants, there is a very low amount of variation in the number of leaves per stem.

  2. When studying obesity in a human population, there tends to be less variation within families than across the entire population.

  3. in a study of adopted children, the children's height is much more similar to that of their biological parents than their adoptive parents.

  4. The DNR maintains records of deer shot each hunting season. In drought years, the average weight is much lower than in years of sufficient rain.

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TLS Online TPP Program

#Question id: 10408

#Unit 6. System Physiology – Plant

Which of the following proteins are involved in regulating light-regulated gene expression in plants by adding ubiquitin tags to the nuclear proteins?
TLS Online TPP Program

#Question id: 10409

#Unit 6. System Physiology – Plant

Three main classes of photoreceptors mediate the effects of UV-A/blue light:
a) the cryptochromes,
b) the phototropins,
c) the phytochrome and
d) the ZEITLUPE (ZTL)
Function of these photoreceptors are-
i) that can promote plant photomorphogenesis
ii) plays roles in day length perception and circadian rhythms
iii) regulate chloroplast movements, and stomatal opening
TLS Online TPP Program

#Question id: 10410

#Unit 6. System Physiology – Plant

phytochrome red and far-red light. Given below experiment of lettuce seed, which of the following option will be incorrect?
TLS Online TPP Program

#Question id: 10411

#Unit 6. System Physiology – Plant

Phytochrome chromophore which absorbs light known as Phytochromobilin , that are synthesized in
TLS Online TPP Program

#Question id: 10412

#Unit 6. System Physiology – Plant

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: 10413

#Unit 6. System Physiology – Plant

Following are certain statements are related to the effect of red and far-red light;
a) under a dense canopy much of the red light is absorbed by plant pigments, resulting in transmittance of mostly far-red light
b) Pr (red) has highest photon flux at 680 nm while Pfr (far-red) has highest photon flux at 730nm
c) Pfr far-red light–absorbing form, which is considered to be the physiologically active form of phytochrome
d) R:FR ratio is strongly affected by the presence of a canopy because chlorophyll absorbs far-red but not red light
Which one of the combinations of above statements is incorrect?