Questions and answers for exam Preparation

MCQs

Total Questions : 619 | Page 7 of 62 pages

Question 61. Why is a food web more realistic way of portraying an ecosystem than a food chain?

Because it shows the relation of organisms with each other in a habitat
Because food chains use only a small sampling of organisms
Because it doesn’t shows the relation of organisms with each other in a habitat
Because it compares the number of consumers to the number of micro-organisms.

Discuss Question

Answer: Option A. -> Because it shows the relation of organisms with each other in a habitat
Answer: (a).Because it shows the relation of organisms with each other in a habitat

Question 62. Which one of the following is the major difference between food web and food chain?

Food chain and food web are linear pathway
Food chain and food web are interconnected pathway
Food chain is a single linear pathway and food web is interconnected pathway
Food chain is interconnected pathway through which food web is single linear pathway

Discuss Question

Answer: Option C. -> Food chain is a single linear pathway and food web is interconnected pathway
Answer: (c).Food chain is a single linear pathway and food web is interconnected pathway

Question 63. What is called for an organism that helps to define an entire ecosystem?

Super species
Keystone species
Dominant species
Precious species

Discuss Question

Answer: Option B. -> Keystone species
Answer: (b).Keystone species

Question 64. Which of the following condition is true for food web?

A food web only follows just one path
A food web ends with a producer
A food web starts with a consumer
A food web shoes many paths plants and animals connected.

Discuss Question

Answer: Option D. -> A food web shoes many paths plants and animals connected.
Answer: (d).A food web shoes many paths plants and animals connected.

Question 65. What is called for the diagram that shows how food chain linked together into more complex feeding relationship?

Food web
Food chain
Food circle
Food triangle

Discuss Question

Answer: Option A. -> Food web
Answer: (a).Food web

Question 66. In ecosystem standing crop refers to________________

All the green plants
All the non living materials
All living and dead animals
All the living materials both animals and plants

Discuss Question

Answer: Option D. -> All the living materials both animals and plants
Answer: (d).All the living materials both animals and plants

Question 67. Which ecosystem produce the highest annual net primary productivity?

Tropical evergreen forest
Tropical rain forest
Tropical deciduous forest
Temperate evergreen forest

Discuss Question

Answer: Option B. -> Tropical rain forest
Answer: (b).Tropical rain forest

Question 68. Total primary production in an ecosystem is known as____________________

Gross final production
Gross primary production
Gross middle production
Net primary production

Discuss Question

Answer: Option B. -> Gross primary production
Answer: (b).Gross primary production

Question 69. What flows through the ecosystem while matter cycles within them?

Energy
Force
Pressure
Wind

Discuss Question

Answer: Option A. -> Energy
Answer: (a).Energy

Question 70. Which type of ecosystem accounts for most of the net primary productivity on earth even though it has a low average net primary productivity?