'All the pyramids, of number, of energy and biomass are upright''.
(i) Grass land (ii) A big tree
(iii) A sugarcane field (iv) The Arabian Sea
Find the option which correctly tells the ecosystem (s) for which the above statement doesn't hold true.

Which of the following statement/s regarding ecological pyramid is/are wrong? I. In most ecosystem, all the pyramids, of number, of energy and biomass are upright. II. Each trophic level has a certain mass of living material at a particular time called as the standing crop. III. The pyramid of biomass in sea is generally upright because the biomass of fishes far lower that of phytoplankton. IV. Pyramid of energy is always upright, can never be inverted. V. Energy at a lower trophic level is always less than at a higher level.

Consider the following statements and select the correct option stating which ones are true (T) and which ones are false (F). (i) Pyramid of biomass is upright in the forest ecosystem and inverted in the grassland ecosystem. (ii) Pyramid of numbers is inverted in grassland and upright in aquatic ecosystem. (iii)Pyramid of energy depicts the rate of energy flow or productivity at successive trophic levels . (iv) Ecological pyramids have no place for detritivores and decomposers though they play an important role in an ecosystem.

In an isosceles triangle, one angle is 70° . The other two angles are of I. 55^@ and 55^@ II. 70^@ and 40^@ . III. Any measure In the given option(s) which of the above statement(s) are true?

Statement I:2+0 = 0+2= 2 ('0' is the additive identity w.r.t addition in whole numbers. Statement-II:2÷8=4,8÷2 =4 . Which of the above statement is true?

Consider the following statements and select the correct option stating which ones are true (T) and which ones are false (F). (i) Pyramid of biomass is upright in the forest ecosystem and inverted in the grassland ecosystem. (ii) Pyramid of numbers is inverted in grassland and upright in aquatic ecosystem. Pyramid of energy depicts the rate of energy flow or productivity at successive trophic levels . (iv) Ecological pyramids have no place for detritivores and decomposers though they play an important role in an ecosystem.

Given figure represents a pyramid of biomass in an aquatic ecosystem. Identify A and B and select the correct answer, (i) A is the crop which supports and B is the crop which is supported (ii) A is the crop which is supported and B is the crop which supports. (iii)A is phytoplanktons and B is zooplanktons (iv) A is zooplanktons and B is phytoplanktons

Given figure represents a pyramid of biomass in an aquatic ecosystem. Identify A and B and select the correct answer. (i) A is the crop which supporsts and B is the crop which is supported. (ii) A is the crop which is supported and B is the crop which supports. (iii) A is phytoplanktons and B is zooplanktons. (iv) A is zooplanktons and B is phytoplanktons.

Given figure represents a pyramid of biomass in an aquatic ecosystem. Identify A and B and select the correct answer. (i) A is the crop which supporsts and B is the crop which is supported. (ii) A is the crop which is supported and B is the crop which supports. (iii) A is phytoplanktons and B is zooplanktons. (iv) A is zooplanktons and B is phytoplanktons.