Assignment 4

Question 1

If we all became vegetarians, we’ll be able to support our large populations. This can be
explained through
a. 10% rule
b. 1% rule
c. trophic cascade
d. biodiversity

Answer 1

10% rule

Question 2

Trees → Birds → Parasites → Hyperparasites represents
a. upright pyramid of numbers
b. inverted pyramid of numbers
c. spindle pyramid of numbers
d. dumb-bell pyramid of numbers

Answer 2

inverted pyramid of numbers

Question 3

Net primary productivity is given by
a. APAR × LUE
b. APAR + LUE
c. APAR - LUE
d. APAR / LUE

Answer 3

APAR x LUE

Question 4

At the compensation point,
a. photosynthesis = respiration
b. photosynthesis < respiration
c. photosynthesis > respiration
d. photosynthesis = 0

Answer 4

photosynthesis = respiration

Question 5

Consider the food chain: Grass → Grasshopper → Frog → Snake → Hawk. As we move up the
food chain,
a. available energy decreases
b. available energy increases
c. available energy remains same
d. available energy is zero everywhere

Answer 5

available energy decreases

Question 6

Consider the food chain: Grass → Grasshopper → Frog → Snake → Hawk. In this food chain,
a. more number of hawks than grasshoppers can be supported
b. more number of grasshoppers than hawks can be supported
c. equal number of hawks and grasshoppers can be supported
d. none of these

Answer 6

more numbers of grasshoppers than hawks can be supported

Question 7

Tree → Frugivorous birds → Hawk represents
a. upright pyramid of numbers
b. inverted pyramid of numbers
c. spindle pyramid of numbers
d. dumb-bell pyramid of numbers

Answer 7

spindle pyramid of numbers

Question 8

Consider the food chain: Grass → Grasshopper → Frog → Snake → Hawk. In this food chain,
a. hawk is producer
b. hawk is consumer and carnivore
c. hawk is consumer and herbivore
d. hawk is decomposer

Answer 8

hawk is consumer and carnivore

Question 9

Glacial lakes are typical examples of
a. eutrophic lakes
b. hypereutrophic lakes
c. oligotrophic lakes
d. mesotrophic lakes

Answer 9

oligotrophic lakes

Question 10

Consider the food chain: Grass → Grasshopper → Frog → Snake → Hawk. In this food chain,
a. frog is producer
b. frog is consumer and carnivore
c. frog is consumer and herbivore
d. frog is decomposer

Answer 10

frog is consumer and carnivore