Page 1 - 3. Home assignment- Food chain and Food web

SAI International School
Subject- Biology, Class- X
Chapter- Our Environment
Subtopic- Food Chain and Food Web
Module-31
Home Assignment

Objective (MCQ)

Q.1 In a food chain, the second trophic level is occupied by: 1
(a) Carnivores
(b) Autotrophs
(c) Herbivores
(d) Producers

Q.2 If 100 J energy is available at the producer level in a food chain, then the energy 1
available to the secondary consumer will be:
(a) 10 J
(b) 0.1 J
(c) 1 J
(d) 0.01 J

Q.3 What will happen if deer is missing in the food chain given below? 1
Grass → Deer → Tiger
(a) The population of tiger increases
(b) The population of grass decreases
(c) Tiger will start eating grass
(d) The population of tiger decreases and the population of grass increases

Q.4 Which of the following is a logical sequence of food chain? 1
(a) producer → consumer → decomposer
(b) producer → decomposer → consumer
(c) consumer → producer → decomposer
(d) decomposer→ producer → consumer

Q.5 Trophic level in an ecosystem represents - 1
(a) oxygen level
(b) water level
(c) energy level
(d) salt level

Q.6 Which of the following statements about food chain and energy flow through 1
ecosystem is false?
(a) Food webs include two or more food chains.
(b) All organisms that are not producers are consumers.
(c) A single organism can feed at several trophic levels.
(d) Detritivores feed at all trophic levels except the producer level.
(e) The lower the trophic level at which an organism feeds, the more energy
available.