Ecosystems and Energy Flow Mocktest MHT-CET 2023

Ecosystems and Energy Flow is an important chapter as its weightage for MHT-CET 2023 is about 2% from 12th biology syllabus

Ecosystems and Energy Flow includes the following sub-topics:

Ecosystem
Energy Flow
Eecological Pyramids
Nutrient Cycles
Ecological Succession
Ecological Services

Before starting the test make sure to prepare all the above topics of Ecosystems and Energy Flow.

Start your Mocktest by clicking the below start button

192

Created on December 29, 2022 By

admin

Ecosystems and Energy Flow (Biology)

Best of Luck!

1 / 40

The term ecosystem was coined by

E. Haeckel

E. Warming

E.P. Odum

A.G. Tansley

2 / 40

Vertical distribution of different species occupying different levels in a biotic community is known as

Divergence

Stratification

Zonation

Pyramid

3 / 40

The spatial pattern of density and distribution of species along a horizontal gradient is called as

Stratification

zonation

trophic niche

volume niche

4 / 40

Gross primary productivity is the rate of production of ____during photosynthesis.

organic matter

oxygen

carbon dioxide

chlorophyll

5 / 40

In an ecosystem, the rate of production of organic matter during photosynthesis is termed as

Net primary productivity

Gross primary productivity

Secondary productivity

Net productivity

6 / 40

The energy which is present in the biomass of plant is known as _____

Gross primary productivity

Net productivity

Secondary productivity

Net primary productivity

7 / 40

Net primary productivity (NPP) in an ecosystem is

GPP- R =NPP

GPP +R = NPP

GPP-NPP = R

R- NPP = GPP

8 / 40

Which one of the following ecosystem has the highest annual net primary productivity?

Desert

Tropical Deciduous forest

Tropical rain forest

Temperate evergreen forest

9 / 40

If 20 joules of energy is available at the producer level as net primary productivity, then amount of energy available in secondary carnivore in joules is

0.02

0.2

0.002

10 / 40

Secondary productivity is the rate of formation of new organic matter by

Producer

Parasite

Consumer

Decomposer

11 / 40

During the process of decomposition, in which stage does complete organic matter get converted into inorganic ions and salts by fungi?

Mineralization

Catabolism

Fragmentation

All of the above

12 / 40

Detritivores like earthworm, breakdown detritus into smaller particles. This process is called

fragmentation

leaching

humification

mineralization

13 / 40

Which one of the following processes during decomposition is CORRECTLY described?

Fragmentation - Carried out by organisms such as earthworm

Humification Leads to the accumulation of a dark coloured substance humus which undergoes microbial action at a very fast rate

Catabolism - Last step in the decomposition under fully anaerobic condition

Leaching - Water soluble inorganic nutrients rise to the top layers of soil

14 / 40

Of the total incident solar radiation, the percentage Photosynthetically Active Radiation (PAR) captured by plants

10 - 20% of PAR only

2 -10% of PAR only

0-10% of PAR only

30-40 % of PAR only

15 / 40

The pyramid that cannot be inverted in a stable ecosystem, is pyramid of

number

energy

biomass

all the above

16 / 40

What type of ecological pyramid would be obtained with the following data?

Secondary consumer : 120g
Primary consumer : 60g
Primary producer : 10g

Upright pyramid of numbers

Pyramid of energy

Inverted pyramid of biomass

Upright pyramid of biomass

17 / 40

Which ecosystem has the maximum biomass?

Forest ecosystem

Grassland ecosystem

Pond ecosystem

Lake ecosystem

18 / 40

Earthworm is a

herbivore

secondary consumer

tertiary consumer

detritivore

19 / 40

Natural reservoir of phosphorus is

Sea water

Animal bones

Rock

Fossils

20 / 40

The simplest of all nutrient cycles operating in an ecosystem is ___ cycle

carbon

phosphorous

nitrogen

sulphur

21 / 40

Identify the INCORRECT statement from the following:

Pyramid of biomass in sea is generally inverted as the biomass of fish far exceeds that of phytoplanktons

Pyramid of energy is mostly upright, but sometimes it may be inverted

Food chains are generally short with few trophic levels as only 10% of the energy is transferred to each trophic level from the lower trophic level

Pyramids of number and biomass may De either upright or inverted.

22 / 40

In an ecological succession the pioneers are generally _____

Autotrophs

Carnivores

Herbivores

Detritivores

23 / 40

which of the following would appear as the pioneer organisms on bare rocks?

Mosses

Green algae

Lichens

Liverworts

24 / 40

Which of the following event does not lead into secondary succession?

All organisms that existed are lost

Where no living organisms ever existed

Abandoned crop field

Land affected by flood

25 / 40

Secondary succession takes place on/in

Bare rock

Degraded forest

Newly created pond

Newly cooled lava

26 / 40

In hydroseric succession, which stage comes just before sedge meadow stage?

Rooted submerged stage

Phytoplankton stage

Reed swamp stage

Climax stage

27 / 40

Which of the following is the correct trend in hydroseric succession?

Phytoplankton →Rooted submerged →Reed swamp →Sedge meadow

Phytoplankton→ Reed swamp →Rooted submerged →Sedge meadow

Phytoplankton→ Sedge meadow→ Reed swamp →Rooted submerged

Rooted submerged→ Phytoplankton →Reed swamp →Sedge meadow

28 / 40

The pioneer species in xerarch and hydrarch succession are respectively

Lichens and phytoplanktons

Lichens and sedges

Phytoplanktons and lichens

Lichens and rooted hydrophytes

29 / 40

The xerarch succession of organisms is seen in _____

River

Ocean

Air

Desert

30 / 40

Which is the pioneer stage during secondary succession in a forest ecosystem after fire

Herbs

Shrubs

Woodland stage

Forest stage

31 / 40

_____ is released as a byproduct of photosynthesis

CO2

SO2

NO2

32 / 40

_____ is a reservoir of carbon.

Lake

Ocean

Well

Pond

33 / 40

Decomposers are

autotrophs

heterotrophs

organotrophs

autoheterotrophs

34 / 40

The amount of energy available ____ at each successive tropic level.

increases

decreases

remains constant

doubles

35 / 40

Natural interconnections of food chains make it a food

net

web

mesh

cycle

36 / 40

Omnivores eat

producers and consumers

primary and secondary consumers

decomposers

phytoplanktons and algae

37 / 40

Humus formation improves soil in improving

texture

water holding capacity

Soil acidity

both (A) and (B)

38 / 40

Detritus food chain starts from

dead organic matter

green plants

zooplanktons

none of the above

39 / 40

In an ecosystem, fungi is grouped as

producer

consumer

secondary consumer

decomposer

40 / 40

Which of the following zones is a good habitat for Savannah and Clapper Rail?

Mudlofts

Low marsh

Subtidal channels

High marsh

Your score is

The average score is 51%

Mocktest of Ecosystems and Energy Flow is live!

Name of test :Ecosystems and Energy Flow
Subject : Biology(12th)
Marks per question : 2 marks
No. of questions : 40 questions
Total marks of test : 80 marks

Domocktest Digital platform created a Online test Series for MHT-CET examination. This is state level exam conducted by Maharashtra Test cell for Students to take admission in different college’s all over Maharashtra for qualifying degrees like engineering and B pharmacy

In the above test we have almost covered all the frequently asked questions in MHT-CET examination related to “Ecosystems and Energy Flow ” in last few year’s question papers. If you are scoring best in the tests provided by us we assure you that you will definitely score good in your entrance examination. We have tried our best and make this difficult test for you.

If you don’t have resources for preparation of NEET/MHT-CET. You can download the 12th textbooks and previous years exam papers from our another website: Maharashtra syllabus

DOMOCKTEST

Ecosystems and Energy Flow includes the following sub-topics:

Best of Luck!

Mocktest of Ecosystems and Energy Flow is live!

Leave a Comment Cancel Reply