Free Ecosystem (Weekly Quiz: 1) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

In a terrestrial ecosystem such as forests, maximum energy is found in which trophic level?

(a) $T_2$

(b) $T_1$

(c) $T_3$

(d) $T_4$

Question-2

Which one of the following is a major constituent of biological membranes, nucleic acids and cellular energy transfer systems?

(a) Carbon

(b) Phosphorus

(c) Oxygen

(d) Nitrogen

Question-3

Which of these is a common herbivores in aquatic ecosystem?

(a) Birds

(b) Insect

(c) Mammals

(d) Mollusc

Question-4

In sedimentary nutrient cycling,

(a) the sedimentary cycles are less perfect

(b) the reservoir pool is lithosphere

(c) the withdrawl from reservoir pool is large

(d) All of the above

Question-5

Both hydrarch and xerarch successions lead to:

(a) highly dry conditions

(b) xeric conditions

(c) medium water conditions

(d) excessive wet conditions

Question-6

What is the annual net primary productivity of whole biosphere?

(a) 165 billion tons (dry weight) of organic matter

(b) 170 billion tons (dry weight) of organic matter

(c) 160 billion tons (dry weight) of organic matter

(d) 155 billion tons (dry weight) of organic matter

Question-7

What is true for individuals of same species?

(a) Live in same habitat

(b) Live in same niche

(c) Interbreeding

(d) Live in different habitats

Question-8

Secondary productivity is rate of formation of new organic matter by

(a) parasite

(b) producer

(c) consumer

(d) decomposer

Question-9

Which one is the correct food chain ?

(a) Frog → Snake → Eagle → Grasshopper → Grass

(b) Eagle → Snake → Grasshopper → Grass → Frog

(c) Grasshopper → Grass → Snake → Frog → Eagle

(d) Grass → Grasshopper → Frog → Snake → Eagle

Question-10

A natural ecosystem-

(a) Depends on plants

(b) Depends on man

(c) Depends on animals

(d) Is auto operated