R4RIN – MCQs, Mock Tests | Biology Biology MCQS[NEET-2021 to 2022]-Biology (living world)

Engler and Prantl published a phylogenetic system in the monograph

1. Genera Plantarum
2. Die Naturlichen Pflazenfamilien
3. Species Plantarum
4. Origin of species

✅ Correct Answer: 2

Plague is caused by

1. Pasteurella pestis
2. Varicella virus
3. Pseudomonas
4. Xanthomonas

✅ Correct Answer: 1

Bacteria involved in two-step conversion of ammonia into nitrate are

1. Azotobacter and Achromobacter
2. Pseudomonas and Nitrobacter
3. Nitrosomnas and Nitrobacter
4. Azotobacter and Nitrosomonas

✅ Correct Answer: 3

Heterocysts, specialized for nitrogen fixation, occur in certain

1. Red algae( batrachospermum )
2. Green algae
3. Blue green algae
4. Brown algae

✅ Correct Answer: 3

Prokaryotic flagellum consists of

1. Fiber enclosed by protein membrane
2. Fiber enclosed by unit membrane
3. Helically arranged protein molecules
4. Membrane enclosed 9+2 microtubular

✅ Correct Answer: 3

Hans Ris coined the term genophore for

1. Stalk supporting spores
2. Bacterial chromosome
3. Genetic material of fungus
4. Genetic material of virus

✅ Correct Answer: 2

Nitrogen fixing organism which can be free as well as symbiotic is

1. Anabaena
2. Azotobacter
3. Liverworts
4. Mosses

✅ Correct Answer: 1

Which of the following is less general in characters as compared to genus

1. Species
2. Class
3. Family
4. Division

✅ Correct Answer: 1

Which of the following combinations is correct for Wheat?

1. Genus Triticum, family Poaceae , order Poales, Class Dicotyledonae
2. Genus Triticum, family Poaceae , order Sapindales, class Monocotyledonae.
3. Genus Triticum, family Poaceae , order Poales, Class Moncotyledonae.
4. Genus Triticum , family Anacardiaceae, order Poales, class Monocotyledonae

✅ Correct Answer: 3

Cells regulate their activity through

1. Flow of energy
2. Flow of material
3. Flow of information
4. Flow of smoke

✅ Correct Answer: 1

A group of plants or animals with similar traits of any rank is

1. Order
2. Genus
3. Taxon
4. Species

✅ Correct Answer: 3

In fish Catla catla, the specific name is identical with the generic name. It is an example of

1. Autonym
2. Tautonym
3. Species
4. Phylum

✅ Correct Answer: 2

Which is the correct sequence of taxonomic categories

1. genus &#8594; Species &#8594; order &#8594; kingdom
2. Species &#8594; order &#8594; phylum &#8594; kingdom
3. Species &#8594; genus &#8594; order &#8594; phylum
4. None of the above

✅ Correct Answer: 4

Linnaeus is credited with

1. Binomial nomenclature
2. Discovery of microscope
3. Theory of biogenesis
4. Discovery of blood circulation

✅ Correct Answer: 1

Linnaeus evolved a system of nomenclature called

1. Monomial
2. Vernacular
3. Binomial
4. Polynomial

✅ Correct Answer: 3

Metabolism is

1. Gain of energy
2. Release of energy
3. Release or gain of energy
4. Catabolism of a reaction

✅ Correct Answer: 3

Thanatology is the science that deals with

1. Detection of lie
2. Identification of living
3. Solving paternity of child
4. Death in all its aspects

✅ Correct Answer: 4

Pesticide used in preparation of herbarium

1. 2, 4-D
2. NAA
3. Mercuric chloride
4. Carbon di sulphide

✅ Correct Answer: 3

Maintenance of internal favorable conditions despite changes in external environment is

1. Entropy
2. Enthalpy
3. Steady state
4. None of the above

✅ Correct Answer: 4

Identify from the following the only category that has a real existence

1. Phylum
2. Kingdom
3. Species
4. Genus

✅ Correct Answer: 3

The term phylum was given by

1. Cuvier
2. Haeckel
3. Theophrastus
4. Linnaeus

✅ Correct Answer: 2

Zoospore of Albugo possesses flagella

1. Two similar and apical
2. Four similar and medium
3. Four apical
4. Two dissimilar and median

✅ Correct Answer: 4

Which occurs in amoebiasis

1. Stool with mucus
2. Mild diarrhea with alternate constipation
3. Stool with blood
4. All of the above

✅ Correct Answer: 2

Fungal cell wall is formed of

1. Pectin
2. Hemicellulose
3. Chitin and cellulose
4. Chitin

✅ Correct Answer: 4

Species of Saccharum originally grown in India was

1. S. officinarum
2. S. barberi
3. S. boulardii
4. S. munja

✅ Correct Answer: 2

In a sponge, digestion takes place in

1. Paragastric cavity/Spongocoel
2. Osculum
3. Ostium
4. Food vacuoles

✅ Correct Answer: 4

Long hollow bones connected by passages are characteristic of

1. Mammales
2. Aves
3. Reptiles
4. All of the above

✅ Correct Answer: 2

Calotes versicolor is

1. Wall lizard
2. Flying lizard
3. Rock lizard
4. Garden lizard

✅ Correct Answer: 4

In Sycon the larva is

1. Trochophore
2. Redia
3. Amphiblastula
4. Parenchymula

✅ Correct Answer: 3

Filaria is spread by

1. Bed bug
2. Mosquito
3. House fly
4. Flea

✅ Correct Answer: 2

Archaeopteryx is connecting link between

1. Reptiles and birds
2. Reptiles and mammals
3. Fishes and reptiles
4. None of the above

✅ Correct Answer: 1

Body cavity of Hydra is called

1. Gastrovascular cavity
2. Coelenteron
3. Enterocoel
4. Both A and B

✅ Correct Answer: 4

Lagoon is

1. Full moon
2. Sea breaking into land and separated by sand dunes
3. Spot in desert with presence of water
4. Horse-shoe shaped coral reef

✅ Correct Answer: 4

Female Ascaris is differentiable from male in

1. Presence of cloaca
2. Shorter size
3. Straight posterior end
4. Presence of penial setae

✅ Correct Answer: 3

A marine dinosaur is

1. Ichthyosaur
2. pelycosaur
3. Pterosaur
4. Tyrannosaurus

✅ Correct Answer: 1

Stage between two larval moults is

1. Instar
2. Pupa
3. Morula
4. Larva

✅ Correct Answer: 2

Boring Sponge is

1. Hyalonema
2. Cliona
3. Chalina
4. Spongilla

✅ Correct Answer: 2

Which of the following is false regarding sponges

1. Development is indirect having a larval stage which is morphologically dist
2. Fertilization is external.
3. They are generally unsymmetrical and marine.
4. Digestion is intracellular.

✅ Correct Answer: 2

Phylum Arthropoda is the largest phylum in the animal kingdom. Which is the second largest phylum

1. Mollusca
2. Annelida
3. Hemichordata
4. Echinodermata

✅ Correct Answer: 1

Arms are absent in

1. Sea uricin
2. Sea cucumber
3. Human
4. Both A and B

✅ Correct Answer: 4

Pseudo metamerism occur in

1. Turbellaria
2. Trematoda
3. Cestoda
4. All of the above

✅ Correct Answer: 3

Sponges reproduce asexually by

1. Multiple fission
2. Binnary fission
3. Fragmentation
4. Sporulation

✅ Correct Answer: 3

Which of the following phyla is correctly matched with its two general characters

1. Mollusca â€“ Oviparous and indirect development
2. Arthropoda â€“ Chitinous exoskeleton and closed type of circulatory system.
3. Cnidaria â€“ Triploblasty, radial symmetry and gastrovascular cavity.
4. Echinodermata â€“ Water vascular system and internal fertilization.

✅ Correct Answer: 1

Which of the following is not an annelidian character

1. Tripploblastic body
2. Enterocoel
3. Metamerism
4. Bilateral symmetry

✅ Correct Answer: 2

Give the correct matching of causative agent/germ and disease

1. Anopheles â€“ Malaria
2. Leishmania â€“Sleeping sickness
3. Glossina â€“ Kala-azar
4. Wuchereria â€“ Filariasis

✅ Correct Answer: 4

The young of some insects resemble the adult in general structure but lack the wings and lack the wings and mature reproductive organs. Such a young one is called

1. Nymph
2. Grub
3. Caterpillar
4. Maggot

✅ Correct Answer: 1

Intermediate between diploblastic and triploblastic body structure is found in

1. Porifers
2. Coelenterates
3. Ctenphores
4. Platyhelmintes

✅ Correct Answer: 3

In which of the following groups all animals are triploblastic

1. Annelida, Mollusca, Porifera
2. Arthropoda, Cnidaria, Annelida.
3. Mollusca, Echinodermata, Annelida.
4. Mollusca, Ctenophora, Arthropoda.

✅ Correct Answer: 3