Which pair is mismatched?

Important Questions on Ecosystem

MEDIUM

12th CBSE

IMPORTANT

TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q (2)

Lichen is the pioneer in the succession:

EASY

12th CBSE

IMPORTANT

TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q (3)

Detritus food chain begins with:

EASY

12th CBSE

IMPORTANT

TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q (4)

The highest net annual productivity occurs in:

EASY

12th CBSE

IMPORTANT

TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q (5)

Which one shows a detritus food chain?

MEDIUM

12th CBSE

IMPORTANT

TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q (6)

Which has the highest value in a grassland?

HARD

12th CBSE

IMPORTANT

TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q (7)

The slow rate of decomposition of fallen logs is due to:

MEDIUM

12th CBSE

IMPORTANT

TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q (8)

Pick up the correct statements:
(i) removal of 80% of tigers resulted in greatly increased growth of vegetation.
(ii) removal of most carnivores resulted in an increased population of deer.
(iii) length of the food chain is generally limited to 3-4 trophic levels due to energy loss.
(iv) length of the food chain may vary from 2-8 trophic levels.

EASY

12th CBSE

IMPORTANT

TRUEMAN'S ELEMENTARY Biology VOL. II For XII Class of 10+2>Chapter 14 - Ecosystem>TEST QUESTIONS>Q (9)

Trophic levels in the ecosystem are formed by: