Which of the following statements is correct? (2021)
Hence, the correct option is D
NCERT Reference: Page no. 22 of topic “2.3 KINGDOM FUNGI” of chapter 2 of NCERT
Which of the following is correct about viroids? (2020)
Hence, the correct option is D
NCERT Reference: Page no. 27 of chapter 2 of NCERT
Which of the following is incorrect about Cyanobacteria? (2020)
Fig: Nostoc showing Heterocyst
Hence, the correct option is B
NCERT Reference: Page no. 19 of topic “2.1.2 Eubacteria” of chapter 2 of NCERT
Match the organisms in column-I with habitats in column-II. (2019)
Select the correct answer from the options given below: (2019)
Hence, the correct option is A
NCERT Reference: Page no. 19 of topic “2.1.1 Archaebacteria” of chapter 2 of NCERT
Which of the following statements is incorrect? (2019)
Hence, the correct option is D
NCERT Reference: Page no. 26 (last paragraph) of chapter 2 of NCERT
Mad cow disease in cattle is caused by an organism which has: (2019)
Hence, the correct option is B
NCERT Reference: Page no. 27 of “Prions” of chapter 2 of NCERT
After karyogamy followed by meiosis, spores are produced exogenously in ______. (2018)
Hence, the correct option is C
NCERT Reference: Page no. 24 of topic “2.3.3 Basidiomycetes” of chapter 2 of NCERT
Which among the following is not a prokaryote. (2018)
Fig: Saccharomyces
Hence, the correct option is A
NCERT Reference: Page no. 23 of topic “2.3.2 Ascomycetes” of chapter 2 of NCERT
Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom______. [2016]
All unicellular eukaryotic organisms like diatoms, desmids (chrysophytes), euglenoids, dinoflagellates and slime mould are included in Protista.
Characteristics of Kingdom Protista:
Hence, the correct option is B
NCERT Reference: Page no. 20 of topic “2.2 KINGDOM PROTISTA” of chapter 2 NCERT
Which one of the following statements is wrong? [2016]
Now, let us find the solution from the options:
Hence, the correct option is C
NCERT Reference: Page no. 19 of topic “2.1.2 Eubacteria” of chapter 2 of NCERT
One of the major components of cell wall of most fungi is [2016]
Hence, the correct option is A
NCERT Reference: Page no. 22 of topic “2.3 KINGDOM FUNGI” of chapter 2 of NCERT
Which of the following statements is wrong for viroids? [2016]
Hence, the correct option is D
NCERT Reference: Page no. 27 of chapter 2 of NCERT
Which of the following are the most suitable indicators of SO2 pollution in the environment? [2015]
Fig: Lichens as Air pollution indicators
Hence, the correct option is D
NCERT Reference: Page no. 27 of chapter 2 of NCERT
Choose the wrong statements: [2015]
A. Neurospora has a short life cycle and hence, it is used in genetical and biochemical studies. Hence, statement A is correct.
B. Morels or Morchella, commonly known as a sponge mushroom produces fruiting body basidiocarp which is edible. Truffles are the ascomycetes which also produce edible fruiting bodies. Hence, statement B is incorrect.
C. Yeast is a unicellular i.e. single-celled and non-mycelial saprophytic fungus. In anaerobic conditions, yeast converts sugar into alcohol with the release of carbon dioxide and some energy. Due to this, yeast is used in the fermentation process. Hence, statement C is correct.
D. Penicillium is a saprophytic fungus belonging to Ascomycetes. The mycelium is profusely branched and septate. Cells are thin-walled with many nuclei in them. Thus, it is multicellular. Penicillin is an antibiotic produced from Penicillium. Hence, statement D is correct.
Hence, the correct option is B
NCERT Reference: Page no. 24 of topic “2.3.2 Ascomycetes” of chapter 2 of NCERT
In which group of organisms the cell walls form two thin overlapping shells which fit together? [2015]
Fig: Chrysophytes
Hence, the correct option is D
NCERT Reference: Page no. 20 of topic “2.2.1 Chrysophytes” of chapter 2 of NCERT
Which one of the following matches is correct ? [2015]
Let us find the correct answer from the following,
Option A: Alternaria belongs to Deuteromycetes, which are also known as imperfect fungi since they reproduce through asexual reproduction or vegetative reproduction. Deuteromycetes reproduce by asexual spores known as conidia. Some members of deuteromycete are parasitic and saprophytes, while a majority of them are decomposers of litter and they help in mineral cycling. Alternaria lack sexual reproduction. Therefore, this is the correct option.
Option B: Mucor is a type of fungus seen in soil and plant leaves. They belongs to the category of phycomycetes and they undergoes asexual reproduction by zoospores or aplanospores. Other examples for phycomycetes are Rhizopus and Albugo. Therefore, this is the incorrect option.
Option C: Agaricus, which is also known as mushroom, belongs to basidiomycetes. They grow on soil, logs and tree stumps. Asexual spores are absent, but vegetative reproduction is common in them.These are saprophytic fungi and are not parasitic. Ustillago and Puccinia are other examples for basidiomycetes. Therefore, this is the incorrect option.
Option D: Phytophthora belongs to algal fungi, also known as phycomycetes. These are mostly found in aquatic habitats. They have coenocytic and septate mycelium. Therefore, this is the incorrect option.
Hence, the correct option is A
NCERT Reference: Page no. 24 of topic “2.3.4 Deuteromycetes” of chapter 2 of NCERT
True nucleus is absent in : [2015 RS]
Hence, the correct option is D
NCERT Reference: Page no. 19 of topic “2.1.2 Eubacteria” of chapter 2 of NCERT
The imperfect fungi which are decomposer of litter and help in mineral cycling belong to: [2015]
Hence, the correct option is D
NCERT Reference: Page no. 24 of topic “2.3.4 Deuteromycetes” of chapter 2 of NCERT
Which one is wrong statement? [2015]
Hence, the correct option is A
NCERT Reference: Page no. 23 of topic “2.3.1 Phycomycetes”of chapter 2 of NCERT
Pick up the wrong statement. [2015]
The kingdom Monera possesses unicellular organisms (e.g - bacteria) having no nuclear membrane.
Hence, the correct option is C
NCERT Reference: Page no. 18 of chapter 2 of NCERT
Five kingdom system of classification suggested by R.H. Whittaker is not based on: [2014]
The main principle for analysis by R.H. Whittaker include:
And therefore presence or absence of a well-defined nucleus is not the basis for R.H. Whittaker's classification.
Hence, the correct option is A
NCERT Reference: Page no. 17 “TABLE 2.1 Characteristics of the Five Kingdoms” of chapter 2 of NCERT
Which one of the following fungi contains hallucinogens? [2014]
Amanita Muscaria:
Archaebacteria differ from eubacteria in: [2014]
Hence, the correct option is A
NCERT Reference: Page no. 19 of topic “2.1.1 Archaebacteria” of chapter 2 of NCERT
Which of the following shows coiled RNA strand and capsomeres? [2014]
Hence, the correct option is B
NCERT Reference: Page no. 26 of topic “2.6 VIRUSES, VIROIDS, PRIONS AND LICHENS” of chapter 2 of NCERT
Viruses have: [2014]
Hence, the correct option is A
NCERT Reference: Page no. 26 of topic “2.6 VIRUSES, VIROIDS, PRIONS AND LICHENS” of chapter 2 of NCERT
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