mcq biology

MCQ on Environmental Science with Answer Key


ecology quizzes

ECOLOGY MCQ-04
(Biology / Life Sciences MCQ: Multiple Choice Questions in Ecology)

MCQ on Environmental Sciences
(Sample/Model/Practice Questions for CSIR JRF/NET Life Science Examination, ICMR JRF Exam, DBT BET JRF Exam, GATE BT and XL Exam, ICAR JRF NE Exam, PG Entrance Exam, JAM Exam, GS Biology Exam and Medical Entrance Exam)

 

1. Which of the following statement best describe a seral community in an ecological succession?

a.       Less stable
b.      More aggressive
c.       More diversity but less stability
d.      More adaptability but less stability

2. Which of the following is NOT an adaptation of a hydrophyte?

a.       Less parenchyma in the stem
b.      Less cuticle over the epidermis
c.       Stomata on the upper side of the leaf
d.      Poorly developed root system

3. The leaf like structure seen in the Acacia plant is:

a.       Phyllode
b.      Cladode
c.       Phylloclade
d.      Cladophyll

4. Mycorrhizal symbiotic association in plants with fungi helps in the absorption of which component from the soil?

a.       Nitrates
b.      Nitrites
c.       Ammonia
d.      Phosphates

5. The process of dendrochronology cannot be applied to plants living in___

a.       Trees in the tropical areas
b.      Trees in the temperate areas
c.       Trees growing in the region of equators
d.      Trees growing in the alpine regions

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mcq biology

Ecology MCQ 003 with Answer Key


MCQ on Ecology

ECOLOGY MCQ-03
(Biology / Life Sciences MCQ: Multiple Choice Questions in Ecology)

MCQ on Ecosystem and Environment
(Sample/Model/Practice Questions for CSIR JRF/NET Life Science Examination, ICMR JRF Exam, DBT BET JRF Exam, GATE BT and XL Exam, ICAR JRF NE Exam, PG Entrance Exam, JAM Exam, GS Biology Exam and Medical Entrance Exam)

(1). In ecology, the term ‘biocenosis” specifically explains:

a.       Ecological study of communities
b.      Ecological study of individual species
c.       A group of organism inhabiting a particular area
d.      A group of many species of plants and animals living together in a natural area

(2). The aquatic animals in the polar region survive even in freezing temperature. This can be explained by:

a.       The very thick layer of fat deposition in their skin
b.      By migrating to temperate region during cold times
c.       Due to the high density of water at 4oC
d.      Due to the neutral pH of the soil at very cold condition

(3). Which among the following is the most abundant molecule in the atmosphere?

a.       CO2
b.      Argon
c.       Methane
d.      Water vapour

(4). Which of the following explain thermal stratification?

a.       Non viability of seeds at higher temperature
b.      Adjustment of body temperature according to the temperature of surroundings
c.       Layers of water in a pond with different temperature
d.      Cycling events in the ocean due to lunar cycle

(5). Which of the following temperature range is known as epilimnion?

a.       8 – 20
b.      21 – 22
c.       5 – 9
d.      9 – 24

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mcq biology

Ecology Multiple Choice Questions Part 2 with Answer Key


environmental science test questions and answers

ECOLOGY MCQ-02
(Biology / Life Sciences MCQ: Multiple Choice Questions in Biochemistry)

MCQ on Ecosystem: Introduction Part 2
(Sample/Model/Practice Questions for CSIR JRF/NET Life Science Examination, ICMR JRF Exam, DBT BET JRF Exam, GATE BT and XL Exam, ICAR JRF NE Exam, PG Entrance Exam, JAM Exam, GS Biology Exam and Medical Entrance Exam)

1. Which of the following is NOT a characteristic of population?

a.       Sex ratio
b.      Natality
c.       Mortality
d.      Stratification

2. Which decade has been designated as the ‘Decade of Biodiversity’ by United Nations?

a.       2021-2030
b.      2011-2020
c.       2001-2010
d.      1991-2000

3. Decomposers which specifically act on the fecal matter of other organisms are called as:

a.       Heterophagic
b.      Allophagic
c.       Coprophagic
d.      Paraphagic

4. In a pond ecosystem, the top area where the production is greater than respiration (P/R >1) is termed as:

a.      Limnetic zone
b.      Profundal zone
c.       Benthic zone
d.      Tidal zone

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mcq biology

Ecology Multiple Choice Questions Part 1 with Answer Key


Ecology Quiz

ECOLOGY MCQ-01
(Biology / Life Sciences MCQ: Multiple Choice Questions in Biochemistry)

Ecosystem Concepts : Introduction Part 1/2
(Sample/Model/Practice Questions for CSIR JRF/NET Life Science Examination, ICMR JRF Exam, DBT BET JRF Exam, GATE BT and XL Exam, ICAR JRF NE Exam, PG Entrance Exam, JAM Exam, GS Biology Exam and Medical Entrance Exam)

1. The natural place where the organism or communities live is known as:

a.       Niche
b.      Habit
c.       Habitat
d.      Biome

2. Any features of an organism or its part which enable it to exist under conditions of its habitat is known as:

a.       Adaptive variation
b.      Adjustment
c.       Acclimatization
d.      Adaptation

3. According to Shelford’s low of tolerance, an organism with wide tolerance limit for environmental factor usually show:

a.       Wide distribution with low population size
b.      Wide distribution with high population size
c.       Narrow distribution with low population size
d.      Narrow distribution with high population size

4. Plants which grow under direct sunlight and those growing under shade are called as _______ and _______ respectively.

a.       Heliophytes and Sciophytes
b.      Sciophytes and Heliophytes
c.       Psamophytes and Heliophytes
d.      Heliophytes and Psamophytes

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