$ Viruses are at a border line position between living and non living. ! Phytoplanktons are those living organisms which are aquatic.

$ Viruses are at a border line position between living and non living. ! Phytoplanktons are those living organisms which are aquatic.
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$ Viruses are at a border line position between living and non living. ! Phytoplanktons are those living ... wrong D. If both As and R are wrong.
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$ Anarobic respiration occurs in the aquatic organisms. ! Aquatic organisms are never autotrophic.

Description : $ Anarobic respiration occurs in the aquatic organisms. ! Aquatic organisms are never autotrophic.

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$ Euglena is an organisms with a controversial position in classification of living organisms. ! Euglena has parasitic nutrition.

Description : $ Euglena is an organisms with a controversial position in classification of living organisms. ! Euglena has parasitic nutrition.

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Given below is an imaginary pyramid of numbers. What could be one of the possibilities about certain organisms at some of the different levels? 10 50 500 1 SC PC PP(a) Level PC is “insects” and level SC is “small insectivorous birds”. (b) Level PP is “phytoplanktons” in sea and “whale” on top level TC. (c) Level one PP is “pipal trees” and the level SC is “sheep”. (d) Level PC is “rats” and level SC is “cats”.

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$ Morphology deals with the study of external characters of the organisms ! Physiology deals with the study the various functions of a living organism

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$ Exo-biology is a branch of biology. ! It deals with the study of external characters of the living organisms.

Description : $ Exo-biology is a branch of biology. ! It deals with the study of external characters of the living organisms.

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$ The process of synthesis of complex organic molecules from simpler ones, by the living organisms is called Anabolisms. ! Anabolism is always useful

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$ Ecologically, animals are consumers. ! Living organisms are classified as follows : (i) Producers (ii) Consumers (iii) Decomposers

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$ living organisms can exist alone ! A population is a group of organisms of entirely different species occupying a particular area.

Description : $ living organisms can exist alone ! A population is a group of organisms of entirely different species occupying a particular area.

Last Answer : $ living organisms can exist alone ! A population is a group of organisms of entirely different species occupying ... D. If both As and R are wrong.

$ The entire material world which can be seen and detected with instrument is like microscops and telescope is called universe. ! Living organisms are

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$ All of the living organisms utilize light energy for their metabolism ! Positive metabolism is called catabolism

Description : $ All of the living organisms utilize light energy for their metabolism ! Positive metabolism is called catabolism

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$ Homoestasis is the capacity of a living organisms to maintain its constant internal conditions. Majority of homoestatic processes occur with the hel

Description : $ Homoestasis is the capacity of a living organisms to maintain its constant internal conditions. Majority of homoestatic processes occur with the hel

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$ DNA contains all the neccesary information and instructions for cell reproduction Reproduction is not essential for the living organisms.

Description : $ DNA contains all the neccesary information and instructions for cell reproduction Reproduction is not essential for the living organisms.

Last Answer : $ DNA contains all the neccesary information and instructions for cell reproduction Reproduction is not essential ... . If both As and R are wrong.

Phytoplanktons are important biotic components of

Description : Phytoplanktons are important biotic components of

Last Answer : Phytoplanktons are important biotic components of A. Grassland B. Pond ecosystem C. Forest ecosystem D. None of these

In a pond ecosystem, benthos means: (a) Zooplanktons on water surface (b) Large fishes eating small ones (c) Primary consumes in the bottom of a pond (d) All phytoplankton’s

Description : In a pond ecosystem, benthos means: (a) Zooplanktons on water surface (b) Large fishes eating small ones (c) Primary consumes in the bottom of a pond (d) All phytoplankton’s

Last Answer : Ans. ((c))

Maximum oxygen is available from – (1) Deserts (2) Green forests (3) Grass lands (4) Phytoplanktons

Description : Maximum oxygen is available from – (1) Deserts (2) Green forests (3) Grass lands (4) Phytoplanktons

Last Answer : (4) Phytoplanktons Explanation: Most of Earth's oxygen comes from tiny ocean plants - called phytoplankton - that live near the water's surface and drift with the currents. Like all ... phytoplankton contribute between 50 to 85 percent of the oxygen in Earth's atinctspbere (National Geographic)

Maximum oxygen is available from : (1) Deserts (2) Green forests (3) Grass lands (4) Phytoplanktons

Description : Maximum oxygen is available from : (1) Deserts (2) Green forests (3) Grass lands (4) Phytoplanktons

Last Answer : Phytoplanktons

(a) Draw a diagram of human respiratory system and label the following: (i) part where air is filtered by fine hair and mucus (ii) part which terminates in balloon – like structures (iii) balloon – like structures where exchange of gases takes place. (iv) part which separates chest cavity from abdominal cavity. (b) Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms? -Biology

Description : (a) Draw a diagram of human respiratory system and label the following: (i) part where air is filtered by fine hair and mucus (ii) part which terminates in balloon - like structures (iii) ... (b) Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms? -Biology

Last Answer : (a) (b) Quantity of dissolved oxygen is fairly low in water as compared to the amount of oxygen in air. Aquatic organisms therefore have to breath faster than terrestrial organisms to absorb the required amount of oxygen from the water.

The optimum dissolved oxygen level (in mg/litre) required for survival of aquatic organisms is - (1) 4 - 6 (2) 2 - 4 (3) 8 - 10 (4) 12 - 16

Description : The optimum dissolved oxygen level (in mg/litre) required for survival of aquatic organisms is - (1) 4 - 6 (2) 2 - 4 (3) 8 - 10 (4) 12 - 16

Last Answer : (1) 4 - 6 Explanation: Oxygen is one of several dissolved gases important to aquatic systems. Dissolved oxygen is necessary to maintain aerobic conditions in surface waters and is ... approach saturation - that concentration which is in equilibrium with the partial pressure of atmospheric oxygen.

For the aquatic organisms, the source of food is – (1) Phytoplankton (2) Sea Weed (3) Aqua plankton (4) Zooplankton

Description : For the aquatic organisms, the source of food is – (1) Phytoplankton (2) Sea Weed (3) Aqua plankton (4) Zooplankton

Last Answer : (4) Zooplankton Explanation: Zooplankton are a type of heterotrophic plankton that range from microscopic organisms to large species, such as jellyfish.

A river with an inflow of domestic sewage rich in organic waste may result in (a) an increased production of fish due to biodegradable nutrients (b) death of fish due to lack of oxygen (c) drying of the river very soon due to algal bloom (d) increased population of aquatic food web organisms.

Description : A river with an inflow of domestic sewage rich in  organic waste may result in  (a) an increased production of fish due to  biodegradable nutrients (b) death of fish due to lack of oxygen ( ... of the river very soon due to algal bloom (d) increased population of aquatic food web  organisms.

Last Answer : (d) increased population of aquatic food web  organisms.

A lake which is rich in organic waste may result in (a) increased population of aquatic organisms due to minerals (b) drying of the lake due to algal bloom (c) increased population of fish due to lots of nutrients (d) mortality of fish due to lack of oxygen.

Description : A lake which is rich in organic waste may result in (a) increased population of aquatic organisms due  to minerals (b) drying of the lake due to algal bloom (c) increased population of fish due to lots of  nutrients (d) mortality of fish due to lack of oxygen.

Last Answer : (d) mortality of fish due to lack of oxygen.

A river with an inflow of domestic sewage rich in organic waste may result in (a) an increased production of fish due to biodegradable nutrients (b) death of fish due to lack of oxygen (c) drying of the river very soon due to algal bloom (d) increased population of aquatic food web organisms.

Description : A river with an inflow of domestic sewage rich in organic waste may result in (a) an increased production of fish due to biodegradable nutrients (b) death of fish due to lack of oxygen (c) drying of the river very soon due to algal bloom (d) increased population of aquatic food web organisms.

Last Answer : (b) death of fish due to lack of oxygen

A lake which is rich in organic waste may result in (a) increased population of aquatic organisms due to minerals (b) drying of the lake due to algal bloom (c) increased population of fish due to lots of nutrients (d) mortality of fish due to lack of oxygen.

Description : A lake which is rich in organic waste may result in (a) increased population of aquatic organisms due to minerals (b) drying of the lake due to algal bloom (c) increased population of fish due to lots of nutrients (d) mortality of fish due to lack of oxygen.

Last Answer : (d) mortality of fish due to lack of oxygen.

Benthic organisms are affected the most by (a) light reaching the forest floor (b) surface turbulence of water (c) sediment characteristics of aquatic ecosystems (d) water-holding capacity of soil

Description : Benthic organisms are affected the most by (a) light reaching the forest floor (b) surface turbulence of water (c) sediment characteristics of aquatic ecosystems (d) water-holding capacity of soil

Last Answer : c) sediment characteristics of aquatic ecosystems

Match the organisms in column-I with habitats in column-II. Column-I Column-II A. Halophiles (i) Hot springs B. Thermoacidophiles (ii) Aquatic environment C. Methanogens (iii)Guts of ruminants D. Cyanobacteria (iv) Salty area Select the correct answer from the options given below. (a) A-(iv), B-(i), C-(iii), D-(ii) (b) A-(i), B-(ii), C-(iii), D-(iv) (c) A-(iii), B-(iv), C-(ii), D-(i) (d) A-(ii), B-(iv), C-(iii), D-(i)

Description : Match the organisms in column-I with habitats in column-II. Column-I Column-II A. Halophiles (i) Hot springs B. Thermoacidophiles (ii) Aquatic environment C. Methanogens (iii)Guts of ruminants D. Cyanobacteria (iv) Salty area Select the correct ... , C-(ii), D-(i) (d) A-(ii), B-(iv), C-(iii), D-(i)

Last Answer : (a) A-(iv), B-(i), C-(iii), D-(ii)

The optimum dissolved oxygen level (in mg/litre) required for survival of aquatic organisms is : (1) 4 – 6 (2) 2 – 4 (3) 8 – 10 (4) 12 – 16

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Last Answer :  4 – 6

$ Viruses are not an exception to all theory ! During mitosis the number of chromosomes is reduced to a half.

Description : $ Viruses are not an exception to all theory ! During mitosis the number of chromosomes is reduced to a half.

Last Answer : $ Viruses are not an exception to all theory ! During mitosis the number of chromosomes is reduced to a half ... wrong D. If both As and R are wrong.

Why are viruses considered to be non living?

Description : Why are viruses considered to be non living?

Last Answer : Many scientists consider viruses to be non living because eachand every living organism must carry out these 7 life processes forit to be considered living: Movement, Reproduction, Sensitivity, ... which hascaused a lot of debate over whether that counts as reproduction inthe scientific community.

Why do biologists consider viruses to be non living?

Description : Why do biologists consider viruses to be non living?

Last Answer : Because they can not reproduce on their own.

The non-living characteristic of viruses is – (1) ability to multiply only inside the host (2) ability to cause diseases in the host (3) ability to undergo mutation (4) ability to be crystallise

Description : The non-living characteristic of viruses is – (1) ability to multiply only inside the host (2) ability to cause diseases in the host (3) ability to undergo mutation (4) ability to be crystallise

Last Answer : (4) ability to be crystallise Explanation: Viruses are known as a connecting link between non-living and living being.

$ All the living and non living matter is formed of molecules. ! Molecules are of two types (i) Micro-molecules (ii) Macro-molecules.

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$ Schleiden and Schwann formulated the theory of inheritance of characters. ! The non living matter also follows the laws of inheritances.

Description : $ Schleiden and Schwann formulated the theory of inheritance of characters. ! The non living matter also follows the laws of inheritances.

Last Answer : $ Schleiden and Schwann formulated the theory of inheritance of characters. ! The non living matter also follows ... D. If both As and R are wrong.

Assertion: Successional process starts only in those areas where no living organisms ever existed. Reason: These areas are not supported by physical e

Description : Assertion: Successional process starts only in those areas where no living organisms ever existed. Reason: These areas are not supported by physical e

Last Answer : Assertion: Successional process starts only in those areas where no living organisms ever existed. Reason: ... and Reason are false, then mark (4)

Temperature changes, in the environment, affect most of the animals which are (a) poikilothermic (b) homoiothermic (c) aquatic (d) desert living

Description : Temperature changes, in the environment, affect most of the animals which are (a) poikilothermic (b) homoiothermic (c) aquatic (d) desert living

Last Answer : (a) poikilothermic

What aspects of viruses causes disease in human and other organisms?

Description : What aspects of viruses causes disease in human and other organisms?

Last Answer : destruction of a host cell

What aspects of viruses causes disease in human and other organisms?

Description : What aspects of viruses causes disease in human and other organisms?

Last Answer : destruction of a host cell

Of all micro-organisms, the most adaptable and versatile are – (1) Viruses (2) Bacteria (3) Algae (4) Fungi

Description : Of all micro-organisms, the most adaptable and versatile are – (1) Viruses (2) Bacteria (3) Algae (4) Fungi

Last Answer : (1) Viruses Explanation: The viruses are adaptable and versatile with many variations worldwide and they reproduce within the cells of the immune system of infected people. ... versatility an individual has developed to respond to changing interpersonal situations and environmental requirements.

Name two diseases caused by following groups of micro-organisms. a) Bacteria b) Viruses c) Protozoa d) Fungi

Description : Name two diseases caused by following groups of micro-organisms. a) Bacteria b) Viruses c) Protozoa d) Fungi

Last Answer : Answers: a) Tuberculosis, Typhoid, Cholera b) Poliomyelitis, Influenza c) Sleeping sickness, Amoebic dysentery d) Ringworm, Actinomycosis

Of all micro-organisms, the most adaptable and versatile are (1) Viruses (2) Bacteria (3) Algae (4) Fungi

Description : Of all micro-organisms, the most adaptable and versatile are (1) Viruses (2) Bacteria (3) Algae (4) Fungi

Last Answer : Viruses

$ When the total number of chromosomes is not the exact multiple of the haploid number of an organisms, the phenomenon is called euploidy. ! Euploidy

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$ Phagotrophs take solid nutrition. ! Photosynthetic organisms are called Producers.

Description : $ Phagotrophs take solid nutrition. ! Photosynthetic organisms are called Producers.

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$ The first photosynthetic organisms which show oxygenic photosynthesis were cyanobacteria. ! Photosynthesis by Eubacteria is Anoxygenic.

Description : $ The first photosynthetic organisms which show oxygenic photosynthesis were cyanobacteria. ! Photosynthesis by Eubacteria is Anoxygenic.

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$ Nitrogen fixing bateria always live in symbiosis. ! Symbiosis occurs between the organisms of the same species.

Description : $ Nitrogen fixing bateria always live in symbiosis. ! Symbiosis occurs between the organisms of the same species.

Last Answer : $ Nitrogen fixing bateria always live in symbiosis. ! Symbiosis occurs between the organisms of the same species. ... D. If both As and R are wrong.

$ Kingdom Monera includes the unicellular prokaryotic organisms. ! Eukaryotes are the organisms which have a eukaryotic nucleus and double membraned o

Description : $ Kingdom Monera includes the unicellular prokaryotic organisms. ! Eukaryotes are the organisms which have a eukaryotic nucleus and double membraned o

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$ The zyhote developes into a multicellular organisms. ! Each cell is totipotent.

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$ Unicellular eukaryotes are the simplest organisms. ! Prokaryotes have the mitochondria whereas eukaryotes are without mitochondria.

Description : $ Unicellular eukaryotes are the simplest organisms. ! Prokaryotes have the mitochondria whereas eukaryotes are without mitochondria.

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$ Classification based on the evolutionary relationships among the organisms is called phylogenetic classification. ! According to Binomila Nomenclatu

Description : $ Classification based on the evolutionary relationships among the organisms is called phylogenetic classification. ! According to Binomila Nomenclatu

Last Answer : $ Classification based on the evolutionary relationships among the organisms is called phylogenetic classification. ! ... If both As and R are wrong.

$ The oldest microfossils of organisms resemble the modern day cyanobacteria. ! Cyanobacteria have oxygenic photosynthesis.

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$ Amitosis occurs with spindle formation. ! Amitosis occurs during the formation of gametes in diploid organisms.

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$ Louis Pasteur discovered that fermentation is brought about by micro-organisms ! Parasitic becteria bring about fermentation.

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