TLS Online TPP Program

#Question id: 12287


Food chains are sometimes short because

#10. Ecological Principles
  1. Only a single species of herbivore feeds on each plant species.
  2. Local extinction of a species causes extinction of the other species in its food chain
  3. Most of the energy in a trophic level is lost as it passes to the next higher level.
  4. Predator species tend to be less diverse and less abundant than prey species.
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TLS Online TPP Program

#Question id: 12671

#6. System Physiology – Plant

When genetic changes in an entire plant population have been fixed over many generations by selective environmental pressure, those changes are referred to as,

TLS Online TPP Program

#Question id: 12673

#10. Ecological Principles

Burning fossil fuels releases oxides of sulphur and nitrogen. Ultimately, these are probably responsible for

TLS Online TPP Program

#Question id: 12677

#10. Ecological Principles

Aquatic ecosystems that are most readily damaged by acid are those that lack an important buffer that dissolves into the runoff after a precipitation event. What is this buffer?

TLS Online TPP Program

#Question id: 12706

#8. Inheritance Biology

When the genotype is determined by the bi-parental contribution, while the phenotypic effect is determined by the maternal nuclear gene. This effect exhibit on the basis of 

TLS Online TPP Program

#Question id: 12711

#6. System Physiology – Plant

Various sensors monitor ROS levels in cells; an increase in ROS activates a signal transduction network. ROS scavenging is carried out by antioxidant molecules ____X_________and by antioxidant enzymes such as____Z_________

TLS Online TPP Program

#Question id: 12713

#6. System Physiology – Plant

Following are certain statements related to plants water deficit condition;
a) Inhibits Leaf Abscission
b) Enhances Root Extension into Deeper, Moist Soil
c) Limits Photosynthesis within the Chloroplast
d) decreases Resistance to Liquid-Phase Water Flow
e) Increases Wax Deposition on the Leaf Surface
f) Alters Energy Dissipation from Leaves
Which of the following combination given statements is correct