MCQ ON ECOLOGICAL PYRAMIDS class 12 for NEET

MCQ ON ECOLOGICAL PYRAMIDS class 12 for NEET | ECOLOGICAL PYRAMIDS class 12 | MCQ ECOLOGICAL PYRAMIDS with Answer | Check the below NCERT MCQ question for class 12 Biology based on the with Answers.

MCQ on ECOLOGICAL PYRAMIDS class 12 Biology with answers were prepared based on the latest pattern.We have provided class 12 Biology MCQs questions on ECOLOGICAL PYRAMIDS with Answers to help students understand the concept very well.

MCQ ON ECOLOGICAL PYRAMIDS is useful for NEET / CSIR / UGC / CBSE / ICSE / AIIMS / EXAM / AFMC EXAM / STATE LEVEL MEDICAL EXAM 2022-23, 2023-24

Introduction:

You must be familiar be the shape of a pyramid. The base of pyramid is broad and its narrow towards the apex. One gets a similar shape whether u express the food aur energy relationship between organisms at different trophic levels. This relationship is express in terms of number biomass or energy. The base of each pyramid represents the producers or the first trophic level while the apex represents tertiary or top level consumer. The three types of ecological pyramids are usually studied pyramid of number,pyramid of biomass, pyramid of energy. In most ecosystem all the pyramids of numbers, of energy, and biomass are upright that is produces are more number and biomass than herbivores, and herbivores are more number and biomass than the carnivores. Also energy at a trophic level is always more than at higher level. There are exception to this generalization. Where to count a number of insect feeding on a big tree what kind of pyramid you do not get? Now add an estimate of number of small birds depending on the insects as also the number of larger birds eating the smaller, draw the same you would get. The pyramid of biomass in sea is generally inverted because the biomas of fishes far exceeds that of phyto plankton. Pyramid of Energy is always upright can never be inverted, , when energy flows from a particular trophic level to the next trophic level some energy is always lost at heat at each step.

MCQ ON ECOLOGICAL PYRAMIDS class 12 for NEET

1. The pyramid of biomass in sea is

(a) upright
(b) slanting
(c) horizontal
(d) inverted

Ans (d) inverted

2. An inverted pyramid of number and inverted pyramid of biomass are respectively seen in

(a) grassland, tree ecosystem
(b) sea and tree ecosystem
(c) tree and sea ecosystem
(d) sea and grassland ecosystem

Ans. (b) tree and sea ecosystem

3. The Upright pyramid of number is absent in
(a) Lake
(b) Forest
(c) Grassland
(d) Pond

Ans. (b) Forest

4. In parasitic food chain the pyramid of numbers is

(a) upright
(b) inverted
(c) linear
(d) both a and b

Ans.(d) both a and b

5. Which one statement for pyramid of energy is incorrect

(a) inverted in shape
(b) upright in shape
(c) base is broad
(d) show energy content of different trophic levels

Ans.(a) inverted in shape

6. Pyramid of energy in a pond ecosystem is always

(a) linear
(b) inverted
(c) upright
(d) irregular

Ans.(c) upright

7. Which of the following is not used for construction of ecological pyramids

(a) fresh weight
(b) dry weight
(c) number of individuals
(d) rate of energy flow

Ans.(d) rate of energy flow

8. Pyramid of energy is always upright indicating that

(a) producers have the lowest energy conversion efficiency
(b) carnivorous have a better energy efficiency than herbivores
(c) energy conversion efficiency is same for all trophic levels
(d) herbivores have a better energy conversion efficiency than carnivorous

Ans.(d) herbivores have a better energy conversion efficiency than carnivores.

9. Pyramid of numbers in grass ecosystem is

(a) linear
(b) upright
(c) inverted
(d) negative

Ans. (b) upright

10. Total amount of living material it various levels of food chain is depicted by

(a) pyramid of energy
(b) pyramid of numbers
(c) pyramid of biomass
(d) all the above

Ans. (c) pyramid of biomass

11. Transfer of energy in different trophic level of ecosystem is

(a) bio energetics
(b) biosystem
(c) geobiocoenosis
(d) holocoenosis

Ans.(a) bioenergetics

12. Who proposed the concept of ecological pyramid

(a) Odum
(b) Clements
(c) Tansley
(d) Elton