Question 1

Match List-I with List-II . List-I List-II A. Spherical I. Vibrio B. Rod II. Cocci C. Comma III. Spirilla D. Spirillum IV. Bacilli Choose the correct answer from the options given below :

Accepted Answer

Bacteria are grouped under four categories based on their shape: Spherical shaped bacteria are called Coccus (plural: Cocci). Rod shaped bacteria are called Bacillus (plural: Bacilli). Comma shaped bacteria are called Vibrio. Spiral shaped bacteria are called Spirillum (plural: Spirilla). Therefore, the correct matching is A-II, B-IV, C-I, D-III.

Question 2

Symbiotic association between fungi and algae are called __________.

Accepted Answer

Lichens are a mutually beneficial symbiotic association between algae (phycobiont) and fungi (mycobiont). The algal component prepares food for fungi, and fungi provide shelter and absorb mineral nutrients and water for its partner. Mycorrhiza is a symbiotic association between fungi and the roots of higher plants. Chrysophytes are a group of protists that includes diatoms and golden algae. Sponges are multicellular animals belonging to the phylum Porifera. Answer: lichens

Question 3

The main criteria used for Five Kingdom Classification proposed by R.H. Whittaker (1969) included : A. Cell structure B. Body organization C. Presence of flagellum D. Reproduction E. Phylogenetic rela

Accepted Answer

R.H. Whittaker (1969) proposed the Five Kingdom Classification. The main criteria used by him for this classification include: 1. Cell structure (prokaryotic or eukaryotic) 2. Body organisation (unicellular or multicellular) 3. Mode of nutrition (autotrophic or heterotrophic) 4. Reproduction 5. Phylogenetic relationships Presence of flagellum was not used as a main criterion for the Five Kingdom Classification. Therefore, the correct criteria from the given list are A, B, D, and E. Answer: A, B,

Question 4

Mad cow disease is caused by __________.

Accepted Answer

Mad cow disease, scientifically known as Bovine Spongiform Encephalopathy (BSE), is a fatal neurodegenerative disease in cattle. It is caused by prions, which are abnormally folded infectious proteins. Prions induce abnormal folding of specific normal cellular proteins found most abundantly in the brain, leading to brain damage and the characteristic signs of the disease. Viroids are infectious RNA molecules that cause plant diseases, Mycoplasma are bacteria lacking a cell wall, and Aspergillus

Question 5

Match List-I with List-II . List-I List-II A. Fusion of protoplasms between gametes I. Meiosis B. Fusion of two nuclei II. Plasmogamy C. Generation of haploid spores III. Karyogamy Choose the correct

Accepted Answer

The sexual cycle in fungi involves three steps: Plasmogamy is the fusion of protoplasms between two motile or non-motile gametes. Thus, A matches with II. Karyogamy is the fusion of two nuclei. Thus, B matches with III. Meiosis occurs in the zygote resulting in the generation of haploid spores. Thus, C matches with I. The correct matching is A-II, B-III, C-I. Answer: A-II, B-III, C-I

Question 6

Which of the following is not a prokaryote ?

Accepted Answer

Prokaryotes are organisms that lack a true nucleus and membrane-bound organelles. They are classified under the kingdom Monera. Bacteria, blue-green algae (cyanobacteria), and mycoplasma are all examples of prokaryotes. Fungi are eukaryotic organisms, meaning they possess a well-defined nucleus and membrane-bound organelles. Therefore, fungi are not prokaryotes. Answer: Fungi

Question 7

Each of the following characteristics represent a Kingdom proposed by Whittaker. Arrange the following in increasing order of complexity of body organization. A. Multicellular heterotrophs with cell w

Accepted Answer

Increasing order of complexity of body organisation in the kingdom given by R.H. Whittaker is as follows- C. Monera-Prokaryotes with cell wall made up of polysaccharide. E. Protista - Unicellular eukaryotes. A. Fungi -Multicellular heterotrophic with cell wall made up of chitin. D. Plantae - Eukaryotes autotrophs with tissue body organisation. B. Animalia - Heterotrophs with tissue organ/system of body organisation Correct sequence is C, E, A, D, B.

Question 8

Match List I with List II array |l|l|l|l| & List-I & & List-II \ A. & Rhizopus & I. & Mushroom \ B. & Ustilago & II. & Smut fungus \ C. & Puccinia & III. & Bread mould \ D. & Agaricus & IV. & Rust

Accepted Answer

Rhizopus is a bread mould fungus. Ustilago is a smut fungi. Puccinia is known as rust fungi. Agaricus is commonly called mushroom. A-III B-II C-IV D-I

Question 9

Which one of the following is not a criterion for classification of fungi?

Accepted Answer

The morphology of the mycelium, mode of spore formation and fruiting bodies form the basis for the division of the kingdom fungi into various classes.

Question 10

Read the following statements and choose the set of correct statements: In the members of Phaeophyceae, A. Asexual reproduction occurs usually by biflagellate zoospores. B. Sexual reproduction is by o

Accepted Answer

In members of Phaeophyceae sexual reproduction is by oogamous, isogamous or anisogamous methods. Therefore correct set of statements are A, C, D and E.

Question 11

Match List-I with List-II: array lll List-I & c List-II \ & c Mode of Nutrition \ . Euglenoid & I. Parasitic \ .Dinoflagellate & II. Saprophytic \ . Slime mould & III. Photosynthetic \ . Plasmodium &

Accepted Answer

Euglenoids are photosynthetic in the presence of sunlight, when deprived of sunlight they behave like heterotrophs. Dinoflagellates are mostly marine and photosynthetic. Slime moulds are saprophytic protists. Plasmodium is malarial parasite which cause malaria.

Biological Classification — Previous Year Questions & Solutions