Practice Questions

TLS Online TPP Program

#Question id: 7156

Which of the following is consistent with a model for aging in which stresses leading to DNA damage cause senescence and aging?

#Unit 5. Developmental Biology

The DAF-16 protein of C. elegans is involved in the activation of stress responses.
Dietary restriction in mammals reduces the production of DNA-damaging free radicals in the mitochondria.
Werner's syndrome is a premature aging illness, possibly caused by a defect in DNA repair.
All of the above are consistent with a model for aging based on DNA damage.

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TLS Online TPP Program

#Question id: 26906

#Unit 10. Ecological Principles

Match the Indian Biosphere reserves (Column P) with the key fauna (Column Q) they are intended to protection

Which one of the following options has all correct matches between column P and Q?

TLS Online TPP Program

#Question id: 3255

#Unit 11. Evolution and Behavior

The body weight of offspring of bird species is range between 12 gm to 18 gm. In a laboratory experiment, species was subjected to selection pressure having influence on the offspring body weight. After many generations of experimental selection pressure, the body weight range between 16 gm to 24 gm. Which of the following natural selection operate on this species?

TLS Online TPP Program

#Question id: 24542

#Unit 9. Diversity of Life Forms

In the tree below, the given character state A and B represent for one character. What show the character state A?

TLS Online TPP Program

#Question id: 11862

#General Aptitude

The LCM of two numbers is 2079 and their HCF is 27. If one of the numbers is 189, the other number is