TEST QUESTIONS

Author:K N Bhatia & M P Tyagi

K N Bhatia Biology Solutions for Exercise - TEST QUESTIONS

Simple step-by-step solutions to TEST QUESTIONS questions of Ecosystem from TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.

Questions from TEST QUESTIONS with Hints & Solutions

EASY
12th CBSE
IMPORTANT

Which organisms constitute the last trophic level?

MEDIUM
12th CBSE
IMPORTANT

Why are the pyramids referred to as ‘upright’ or ‘inverted’? Explain. 

EASY
12th CBSE
IMPORTANT

Choose the correct answer from the options given in bracket:

Name the type of food chain that exists in a pond. (Grazing/Detritus)

EASY
12th CBSE
IMPORTANT

What is a trophic level in an ecosystem? What is a standing crop with reference to it?

MEDIUM
12th CBSE
IMPORTANT

How is the detritus food chain connected with the grazing food chain in a natural ecosystem?

MEDIUM
12th CBSE
IMPORTANT

What are ecosystem services? What lessons do they give to human society?

MEDIUM
12th CBSE
IMPORTANT

Why is the food web more stable than the food chain? What lesson does it give to us? 

MEDIUM
12th CBSE
IMPORTANT

Why is India surplus in food grains though its output is lower than that of deficient Russia? What value does it depict?