Biology Ecosystems MCQs Chapter 11 Class 12

MDCAT Entry test 2023 contains most of the Biology MCQs. FSC Part 2 bio book MCQs. HSSC Biology questions MCQs. Solved Chapterwise Biology MCQs for first-year 12 class MCQs. Second-year and first-year bio textbooks chapter-wise MCQs with the answer are provided here. PakLearningSpot PLS MCQs Bank website for FREE Entry test preparations

Created on March 02, 2022 By Ali Durrani

Biology Ch 11 Class 12

This is the Free Access to Limited MCQs. Enroll to PLS Boost Premium Bundle to Get More MCQs HERE

1 / 20

The biosphere covers about

. 8-10 km

5-10 km

15-30 km

16-20 km

2 / 20

The actual location or place where an organism lives is

Environment

Biosphere

Biomass

Habitat

3 / 20

Hydrosere is

Secondary succession starting in a pond

. Primary succession starting in a pond

Primary succession starting on a dry soil

All of these

4 / 20

Study of relationship of organisms to their environment is

Ecology

Palaentology

Geology

None of these

5 / 20

The role a species plays in a community including behavior and influence is

Nichon

Niche

Autecology

Profession

6 / 20

Legume plants are the hosts to

Rhizobium

Mycorrhiza

Lichen

Algae

7 / 20

A dual organism composed of symbiotic association of an alga living within a fungus myceliium is

Mycorrhiza

Rhizobium

Lichen

Legume

8 / 20

All populations within an ecosystem interconnected to one another are known as

Species

Family

Community

Biomes

9 / 20

Wood forests form the

Pioneers community

Climax community

Top community

Transient community

10 / 20

Study of a single population’s relationship to its environment is called

Ecology

Synecology

Autecology

Niche

11 / 20

Secondary succession starts from A.

A bar rock sand

Clear glacial pool

From remains of previous ecosystem

Fire

12 / 20

Disease in living organisms caused by parasites is called

Parasitism

Infestation

Predation

Infection

13 / 20

Diverse and stable community at the end of succession is

Diverse Climax communityand stable community at the end of succession is A. Climax community B. Pioneers community C. Top community D. Stable community Answer & Explanation Answer: Option A

Pioneers community

Top community

Stable community A

14 / 20

Abiotic components include

Atmosphere

Hydrosphere

Lithosphere

All of these

15 / 20

Mosses are

Dermatocarpon

Permellia

Tortula

Both b and c

16 / 20

Lichen and algae form

Climax community

Pioneers community

Initiator community

Seral community

17 / 20

Sequence of changes in community and its non-living environment over a period of time is

Niche

Succession

Alterations

Neo-ecology

18 / 20

Major regional ecological community of plants and animals forms

Biosphere

Biomass

Biomes

Bioecosystem

19 / 20

Which statement is true?

Producers are heterotrophic organisms

Consumers are autotrophic organisms

Fungi and bacteria are decomposers

Consumers release chemical elements as ions

20 / 20

Plants growing in xeric conditions are called

Spherophytes

Mesophytes

Xerophytes

Teridophytes

Your score is

The average score is 66%

Learn Anytime Anywhere

PakLearningSpot

Download PLS Mobile App from Google Play Store