267256
Bacteria are found to be primitive organisms because they
1 are small, microscopic whichare not seen with naked eye.
2 cause serious diseases to human being, domestic animals and crop plants.
3 produceendospores which are very resistant to adverse conditions.
4 possess incipient nucleus and show amitotic division.
Explanation:
(d) Bacteria are microscopic organisms whose single cells have neither a membrane-enclosed nucleus nor other membrane-enclosed organelles like mitochondria and chloroplasts. Bacteria are found to be primitive organisms because they do not have well-defined nucleus and shows amitotic division.
NCERT Page-18 / N-12
Biological Classification
267245
Organisms of which of the following kingdomdo not have nuclear membrane?
1 Protista
2 Fungi
3 Monera
4 Plantae
Explanation:
(c) Monera is the group of prokaryotes. They are basically unicellular, may be mycelial, colonial and filamentous. They do not contain any organized nucleus with distinct membrane.
NCERT Page-17/N-12
Biological Classification
267246
Which of the following is the smallest living cell and can live without oxygen?
1 Mycoplasma
2 Mycorrhiza
3 Euglena
4 Trypanosoma
Explanation:
(a) Mycoplasma are the simplest or smallest known organisms that completely lack a cell wall and can survive without oxygen.
NCERT Page-20/N-14
Biological Classification
267247
The bacteria which oxidize various inorganic substances anduse the released energy for the synthesis of food are called
1 Archaebacteria
2 Heterotrophic bacteria
3 Photosynthetic autotrophic bacteria
4 Chemosynthetic autotrophic bacteria
Explanation:
(d) Chemosynthetic autotrophic bacteria use the energy obtained by the oxidation of chemicals for the synthesis of food. They play a great role in recycling of nutrients like nitrogen, phosphorous, iron and sulphur.
NCERT Page-19 / N-13
Biological Classification
267248
Which of the following statements is not correctfor methanogens?
1 They arearchaebacteria.
2 They live in marshy areas.
3 Methane is their preferred carbon source.
4 They are present in guts of several ruminant animals.
Explanation:
(c) Methanogens are archaebacteria that live in marshy area produce methane as a metabolic byproduct in anoxic conditions. Methane is not their preferred carbon source.
267256
Bacteria are found to be primitive organisms because they
1 are small, microscopic whichare not seen with naked eye.
2 cause serious diseases to human being, domestic animals and crop plants.
3 produceendospores which are very resistant to adverse conditions.
4 possess incipient nucleus and show amitotic division.
Explanation:
(d) Bacteria are microscopic organisms whose single cells have neither a membrane-enclosed nucleus nor other membrane-enclosed organelles like mitochondria and chloroplasts. Bacteria are found to be primitive organisms because they do not have well-defined nucleus and shows amitotic division.
NCERT Page-18 / N-12
Biological Classification
267245
Organisms of which of the following kingdomdo not have nuclear membrane?
1 Protista
2 Fungi
3 Monera
4 Plantae
Explanation:
(c) Monera is the group of prokaryotes. They are basically unicellular, may be mycelial, colonial and filamentous. They do not contain any organized nucleus with distinct membrane.
NCERT Page-17/N-12
Biological Classification
267246
Which of the following is the smallest living cell and can live without oxygen?
1 Mycoplasma
2 Mycorrhiza
3 Euglena
4 Trypanosoma
Explanation:
(a) Mycoplasma are the simplest or smallest known organisms that completely lack a cell wall and can survive without oxygen.
NCERT Page-20/N-14
Biological Classification
267247
The bacteria which oxidize various inorganic substances anduse the released energy for the synthesis of food are called
1 Archaebacteria
2 Heterotrophic bacteria
3 Photosynthetic autotrophic bacteria
4 Chemosynthetic autotrophic bacteria
Explanation:
(d) Chemosynthetic autotrophic bacteria use the energy obtained by the oxidation of chemicals for the synthesis of food. They play a great role in recycling of nutrients like nitrogen, phosphorous, iron and sulphur.
NCERT Page-19 / N-13
Biological Classification
267248
Which of the following statements is not correctfor methanogens?
1 They arearchaebacteria.
2 They live in marshy areas.
3 Methane is their preferred carbon source.
4 They are present in guts of several ruminant animals.
Explanation:
(c) Methanogens are archaebacteria that live in marshy area produce methane as a metabolic byproduct in anoxic conditions. Methane is not their preferred carbon source.
267256
Bacteria are found to be primitive organisms because they
1 are small, microscopic whichare not seen with naked eye.
2 cause serious diseases to human being, domestic animals and crop plants.
3 produceendospores which are very resistant to adverse conditions.
4 possess incipient nucleus and show amitotic division.
Explanation:
(d) Bacteria are microscopic organisms whose single cells have neither a membrane-enclosed nucleus nor other membrane-enclosed organelles like mitochondria and chloroplasts. Bacteria are found to be primitive organisms because they do not have well-defined nucleus and shows amitotic division.
NCERT Page-18 / N-12
Biological Classification
267245
Organisms of which of the following kingdomdo not have nuclear membrane?
1 Protista
2 Fungi
3 Monera
4 Plantae
Explanation:
(c) Monera is the group of prokaryotes. They are basically unicellular, may be mycelial, colonial and filamentous. They do not contain any organized nucleus with distinct membrane.
NCERT Page-17/N-12
Biological Classification
267246
Which of the following is the smallest living cell and can live without oxygen?
1 Mycoplasma
2 Mycorrhiza
3 Euglena
4 Trypanosoma
Explanation:
(a) Mycoplasma are the simplest or smallest known organisms that completely lack a cell wall and can survive without oxygen.
NCERT Page-20/N-14
Biological Classification
267247
The bacteria which oxidize various inorganic substances anduse the released energy for the synthesis of food are called
1 Archaebacteria
2 Heterotrophic bacteria
3 Photosynthetic autotrophic bacteria
4 Chemosynthetic autotrophic bacteria
Explanation:
(d) Chemosynthetic autotrophic bacteria use the energy obtained by the oxidation of chemicals for the synthesis of food. They play a great role in recycling of nutrients like nitrogen, phosphorous, iron and sulphur.
NCERT Page-19 / N-13
Biological Classification
267248
Which of the following statements is not correctfor methanogens?
1 They arearchaebacteria.
2 They live in marshy areas.
3 Methane is their preferred carbon source.
4 They are present in guts of several ruminant animals.
Explanation:
(c) Methanogens are archaebacteria that live in marshy area produce methane as a metabolic byproduct in anoxic conditions. Methane is not their preferred carbon source.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Biological Classification
267256
Bacteria are found to be primitive organisms because they
1 are small, microscopic whichare not seen with naked eye.
2 cause serious diseases to human being, domestic animals and crop plants.
3 produceendospores which are very resistant to adverse conditions.
4 possess incipient nucleus and show amitotic division.
Explanation:
(d) Bacteria are microscopic organisms whose single cells have neither a membrane-enclosed nucleus nor other membrane-enclosed organelles like mitochondria and chloroplasts. Bacteria are found to be primitive organisms because they do not have well-defined nucleus and shows amitotic division.
NCERT Page-18 / N-12
Biological Classification
267245
Organisms of which of the following kingdomdo not have nuclear membrane?
1 Protista
2 Fungi
3 Monera
4 Plantae
Explanation:
(c) Monera is the group of prokaryotes. They are basically unicellular, may be mycelial, colonial and filamentous. They do not contain any organized nucleus with distinct membrane.
NCERT Page-17/N-12
Biological Classification
267246
Which of the following is the smallest living cell and can live without oxygen?
1 Mycoplasma
2 Mycorrhiza
3 Euglena
4 Trypanosoma
Explanation:
(a) Mycoplasma are the simplest or smallest known organisms that completely lack a cell wall and can survive without oxygen.
NCERT Page-20/N-14
Biological Classification
267247
The bacteria which oxidize various inorganic substances anduse the released energy for the synthesis of food are called
1 Archaebacteria
2 Heterotrophic bacteria
3 Photosynthetic autotrophic bacteria
4 Chemosynthetic autotrophic bacteria
Explanation:
(d) Chemosynthetic autotrophic bacteria use the energy obtained by the oxidation of chemicals for the synthesis of food. They play a great role in recycling of nutrients like nitrogen, phosphorous, iron and sulphur.
NCERT Page-19 / N-13
Biological Classification
267248
Which of the following statements is not correctfor methanogens?
1 They arearchaebacteria.
2 They live in marshy areas.
3 Methane is their preferred carbon source.
4 They are present in guts of several ruminant animals.
Explanation:
(c) Methanogens are archaebacteria that live in marshy area produce methane as a metabolic byproduct in anoxic conditions. Methane is not their preferred carbon source.
267256
Bacteria are found to be primitive organisms because they
1 are small, microscopic whichare not seen with naked eye.
2 cause serious diseases to human being, domestic animals and crop plants.
3 produceendospores which are very resistant to adverse conditions.
4 possess incipient nucleus and show amitotic division.
Explanation:
(d) Bacteria are microscopic organisms whose single cells have neither a membrane-enclosed nucleus nor other membrane-enclosed organelles like mitochondria and chloroplasts. Bacteria are found to be primitive organisms because they do not have well-defined nucleus and shows amitotic division.
NCERT Page-18 / N-12
Biological Classification
267245
Organisms of which of the following kingdomdo not have nuclear membrane?
1 Protista
2 Fungi
3 Monera
4 Plantae
Explanation:
(c) Monera is the group of prokaryotes. They are basically unicellular, may be mycelial, colonial and filamentous. They do not contain any organized nucleus with distinct membrane.
NCERT Page-17/N-12
Biological Classification
267246
Which of the following is the smallest living cell and can live without oxygen?
1 Mycoplasma
2 Mycorrhiza
3 Euglena
4 Trypanosoma
Explanation:
(a) Mycoplasma are the simplest or smallest known organisms that completely lack a cell wall and can survive without oxygen.
NCERT Page-20/N-14
Biological Classification
267247
The bacteria which oxidize various inorganic substances anduse the released energy for the synthesis of food are called
1 Archaebacteria
2 Heterotrophic bacteria
3 Photosynthetic autotrophic bacteria
4 Chemosynthetic autotrophic bacteria
Explanation:
(d) Chemosynthetic autotrophic bacteria use the energy obtained by the oxidation of chemicals for the synthesis of food. They play a great role in recycling of nutrients like nitrogen, phosphorous, iron and sulphur.
NCERT Page-19 / N-13
Biological Classification
267248
Which of the following statements is not correctfor methanogens?
1 They arearchaebacteria.
2 They live in marshy areas.
3 Methane is their preferred carbon source.
4 They are present in guts of several ruminant animals.
Explanation:
(c) Methanogens are archaebacteria that live in marshy area produce methane as a metabolic byproduct in anoxic conditions. Methane is not their preferred carbon source.