Chemoheterotrophs are the bacteria which utilize

TLS Online TPP Program

#Question id: 10668

#Unit 10. Ecological Principles

Following table was shown life table where (S(x)= Live Individual , b(x) = Age specific fertility rate , g(x)= Death rate. What is NET reproductive rate?

               

TLS Online TPP Program

#Question id: 15278

#Unit 13. Methods in Biology

A DNA sample having mass 1 ng undergoes PCR, the eluted DNA is weighted about 1 microgram, the minimum number of cycles required

TLS Online TPP Program

#Question id: 4960

#Unit 11. Evolution and Behavior

Letʹs say that a hypothetical submersible robot was used to collect samples of sedimentary rock from the sea floor along the section illustrated. The robot moved back and forth along the transect, collecting first from site A, then site III, then site B, then site II, and lastly site D. Assuming that sedimentation has occurred at a constant rate along the transect over the past million years, rearrange the sites mentioned above on the basis of the thickness of the sediments overlying the igneous rock, from thickest to thinnest.

TLS Online TPP Program

#Question id: 26965

#Unit 10. Ecological Principles

Greater population rate is given by____

TLS Online TPP Program

#Question id: 29093

#Unit 10. Ecological Principles

Five Hypotheses Explain How Species Richness Affects Community Services

I-Elton’s hypothesis

II-rivet hypothesis

III-Redundancy hypothesis

IV-Keystone hypothesis

V-Idiosyncratic hypothesis

a) Species that play the same roles in a community can compensate for each other if some are lost under particular conditions

b) Community services change as the number of species increases or decreases

c) there is a linear correlation between species richness and community services

d) species is an organism that helps hold the system together

e)Some species play a small but critical role in keeping the plane

Correctly match the following hypothesis with their correct  prediction;