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MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 2101. |
Degree of biodiversity increases from: |
| A. | Equator to poles |
| B. | Polar to equator |
| C. | Low latitude to high latitude |
| D. | Low altitude to high altitude |
| Answer» C. Low latitude to high latitude | |
| 2102. |
Antilopa cervicapra or Black Buck is: |
| A. | Vulnerable |
| B. | Endangered |
| C. | Critically endangered |
| D. | Extinct in the wild |
| Answer» B. Endangered | |
| 2103. |
Why do migratory species present special preservation challenges? |
| A. | Because they are endemic, they are especially susceptible to habitat destruction. |
| B. | Their conservation may require international cooperation when they require habitats in different countries. |
| C. | They are often prone to population number decline during their long migratory journeys. |
| D. | They reside in biodiversity hot spots that are most susceptible to habitat degradation. |
| Answer» C. They are often prone to population number decline during their long migratory journeys. | |
| 2104. |
Which of the following does not constitute habitat destruction? |
| A. | Fishing |
| B. | Logging |
| C. | Burning forests |
| D. | Filling in wetlands |
| Answer» B. Logging | |
| 2105. |
The percentage of forest cover recommended by National Forest Policy (1988) is: |
| A. | 33% for plains and 67% for hills |
| B. | 37% for plains and 63% for hills |
| C. | 20% for plains and 70% for hills |
| D. | 23% for plains and 77% for hills |
| Answer» B. 37% for plains and 63% for hills | |
| 2106. |
Which one of the following shows concept o: species-area relationship? |
| A. | The number of species in an area increases with the size of the area. |
| B. | Larger species require larger habitat areas than do smaller species. |
| C. | Most species within any given area are endemic. |
| D. | The larger the area, the greater the extinction rate. |
| Answer» B. Larger species require larger habitat areas than do smaller species. | |
| 2107. |
Which one of the following statements does not represent biodiversity of a geographical region? (i) Genetic diversity present is in the dominantspecies of the region. (ii) Species endemic to the region. (iii) Endangered species found in the region. (iv) The diversity in the organisms living in the region. |
| A. | (i) and (ii) |
| B. | (iii) and (iv) |
| C. | (ii) only |
| D. | (iv) only |
| Answer» E. | |
| 2108. |
The proportionate number of individuals of different species in an area is called as: |
| A. | Species diversity |
| B. | Species richness |
| C. | Diversity index |
| D. | Species evenness |
| Answer» E. | |
| 2109. |
Genetic diversity in agricultural crops is threatened by: |
| A. | Introduction of high yielding varieties |
| B. | Intensive use of fertilisers |
| C. | Intensive intercropping |
| D. | Intensive use of biopesticides |
| Answer» B. Intensive use of fertilisers | |
| 2110. |
In India, we find mangoes with different flavours, colours, fibre content, sugar content and even shelf-life. The large variation is on account of: |
| A. | Species diversity |
| B. | Induced mutations |
| C. | Genetic diversity |
| D. | Hybridisation |
| Answer» D. Hybridisation | |
| 2111. |
Alpha diversity is present: |
| A. | Within community |
| B. | Between community |
| C. | Ranges of communities |
| D. | All of the above |
| Answer» B. Between community | |
| 2112. |
Venom of cobra affects: |
| A. | Respiratory system |
| B. | Nervous system |
| C. | Circulatory system |
| D. | Digestive system |
| Answer» C. Circulatory system | |
| 2113. |
A poisonous lizard is: |
| A. | Heloderma |
| B. | Ancistrodon |
| C. | Chamaeleon |
| D. | Varanus |
| Answer» B. Ancistrodon | |
| 2114. |
Ruminants belongs to order: |
| A. | Proboscida |
| B. | Artiodactyla |
| C. | Marsupials |
| D. | Edentata |
| Answer» C. Marsupials | |
| 2115. |
A student brought a strange animal at home which he found outside under a rock. It had moist skin, a complete digestive tract, a ventral nerve cord, and had gone through torsion. Identify the phylum of the animal. |
| A. | Porifera |
| B. | Annelida |
| C. | Mollusca |
| D. | Echinodermata |
| Answer» D. Echinodermata | |
| 2116. |
Electric organs occur in: |
| A. | Sharks |
| B. | Goldfish |
| C. | Porpoises |
| D. | Rays |
| Answer» E. | |
| 2117. |
Match column-I (contains the characteristics features) and column-II (contains the function/ location) and select the correct match from the option given below. Column-I Column-II A. Water canal system I. Sponges B. Comb plates II. Help in swimming C. Nephridia III. Presentinmollusca D. Jointed appendages IV. Characteristics of Roundworm E. Muscular foot V. A body part of E arthropoda VI. Helps in reproduction VII. Platyhelminthes VIII. Helps in osmoregulation and excretion IX. Eight ciliated external rows present in a body of ctenophora. |
| A. | A-I B-IX C-VIII D-V E-III |
| B. | A-II B-III C-VI D-IX E-V |
| C. | A-II B-V C-I D-IV E-IX |
| D. | A-III B-VI C-IV D-V E- I |
| Answer» B. A-II B-III C-VI D-IX E-V | |
| 2118. |
Which of the following statement(s) is/are correct regarding phylum coelenterata? (i) They are aquatic, mostly marine, sessile or free- swimming, radially symmetrical animals. (ii) They have a central gastro-vascular cavity with a single opening called hypostome. (iii) Digestion is extracellular and intracellular. (iv) Examples are Sycon, Spongilla and Euspongia. |
| A. | (i) and (ii) |
| B. | (i) and (iv) |
| C. | (i), (ii) and (iii) |
| D. | All of these |
| Answer» D. All of these | |
| 2119. |
Flight muscles of bird are attached to: |
| A. | Clavicle |
| B. | Coracoid |
| C. | Keel of sternum |
| D. | Scapula |
| Answer» D. Scapula | |
| 2120. |
Which of the following phylum is being described by the given statements? (i) They are bilaterally symmetrical, triploblastic, segmented and coelomate animals. (ii) The body consists of head, thorax, abdomen and have jointed appendages. (iii) Circulatory system is of open type. (iv) Excretion takes place through malphigian tubules. |
| A. | Arthropoda |
| B. | Annelida |
| C. | Mollusca |
| D. | Echinodermata |
| Answer» B. Annelida | |
| 2121. |
Mesogloea of Hydra is made up of: |
| A. | Mucopolysaccharides |
| B. | Protein |
| C. | Protein and fat |
| D. | Reticulate tissue |
| Answer» B. Protein | |
| 2122. |
An indigenous fish used in biological control is: |
| A. | Catia |
| B. | Lebistes |
| C. | Gambusia |
| D. | Aplocheilus |
| Answer» C. Gambusia | |
| 2123. |
Similarity between fish and tadpole is: |
| A. | Legs |
| B. | Fins |
| C. | Lateral line |
| D. | Scales |
| Answer» D. Scales | |
| 2124. |
Which of the following group belongs to deuterostome? |
| A. | Annelida, Arthropoda, Mollusca |
| B. | Echinodermata, Hemichordata, Chordata |
| C. | Annelida, Mollusca, Chordata |
| D. | Arthropoda, Mollusca, Echinodermata |
| Answer» C. Annelida, Mollusca, Chordata | |
| 2125. |
Trait common amongst earthworm, leech and centipede is: |
| A. | Absence of legs |
| B. | Hermaphrodite nature |
| C. | Ventral nerve cord |
| D. | Malpighian tubules |
| Answer» D. Malpighian tubules | |
| 2126. |
Which one of the following given character is incorrect for phylum chordata? |
| A. | Presence of notochord |
| B. | Presence of vertebral column |
| C. | Paired gill slits |
| D. | A central nervous system dorsal to digestive canal |
| Answer» C. Paired gill slits | |
| 2127. |
Uricotelism is found in: |
| A. | fishes and fresh water protozoans. |
| B. | birds, reptiles and insects. |
| C. | frogs and toads. |
| D. | mammals and birds. |
| Answer» C. frogs and toads. | |
| 2128. |
Amphiblastula is larva of: |
| A. | Leucosolenia |
| B. | Sycon |
| C. | Both (a) and (b) |
| D. | Clathrina |
| Answer» D. Clathrina | |
| 2129. |
Match column-I with column-II and select the correct answer using the codes given below. Column-I Column-II A. Millipedes I. Roundwonn, pseudocoelomate B. Ascaris II. H. Diplopoda C. Asterias III. Softbodyanimals, mantle D. Hirudinaria IV. Radial symmetry, water vascular system, tube feet E. Pila V. Botryoidal tissues temporary clitellum |
| A. | A-II B-I C - IV D -V E-III |
| B. | A-II B-I C-IV D-III E-V |
| C. | A-II B-IV C-I D-V E-III |
| D. | A-II B-I C-V D-IV E-III |
| Answer» B. A-II B-I C-IV D-III E-V | |
| 2130. |
Which of the following class is being described by the given statements? (i) They are found in a variety of habitats- polar ice-caps, deserts, mountains, forests, grasslands and dark caves. (ii) Most unique characteristic is the presence of mammary glands by which the young ones are nourished. (iii) Heart is four-chambered. (iv) Sexes are separate and fertilisation is internal. |
| A. | Reptilia |
| B. | Aves |
| C. | Mammalia |
| D. | Amphibia |
| Answer» D. Amphibia | |
| 2131. |
Which one of the following sets of animals belongs to the same class of a phylum? |
| A. | Hydra, jelly fish, cray fish |
| B. | Bat, pigeon, whale |
| C. | Spider, scorpion, centipede |
| D. | Whale, otter, kangaroo |
| Answer» E. | |
| 2132. |
Which of the following is the characteristic feature of fishes? |
| A. | Tail and venous heart |
| B. | Venous heart and gills |
| C. | Epidermal scales and tail |
| D. | Epidermal scales and gills |
| Answer» C. Epidermal scales and tail | |
| 2133. |
Which one is not a specific trait of birds (Aves)? |
| A. | Bipedal locomotion |
| B. | Toothless beak |
| C. | Wings |
| D. | Feathers |
| Answer» D. Feathers | |
| 2134. |
Poisonous fangs of a snake are modified: |
| A. | Mandible |
| B. | Maxillary teeth |
| C. | Canines |
| D. | Nasals |
| Answer» C. Canines | |
| 2135. |
Which of the following statement(s) is/are correct regarding class aves? (i) The forelimbs are modified into wings and the hindlimbs generally have scales and are modified for walking, swimming or clasping the tree branches. (ii) Heart is completely four-chambered. (iii) They are warm- blooded (homoiothermous) animals i.e., they are able to maintain a constant body temperature. (iv) They are oviparous and development is direct. |
| A. | Both (i) and (iii) |
| B. | Both (i) and (iv) |
| C. | (i), (ii) and (iii) |
| D. | All of these |
| Answer» E. | |
| 2136. |
Pupa of mosquito is called: |
| A. | Bolus |
| B. | Tumbler |
| C. | Maggot |
| D. | Wriggler |
| Answer» C. Maggot | |
| 2137. |
Which of the following is a correct match of a phylum with its three examples? |
| A. | Platyhelminthes-Planaria, Schistosoma Enterobius |
| B. | Mollusca- Loligo. Sepia, Octopus |
| C. | Ponkra-Spongilla, Euplectella. Pennatu, |
| D. | Cmdann-Bonellia, Physalia.Aurelia |
| Answer» C. Ponkra-Spongilla, Euplectella. Pennatu, | |
| 2138. |
Which one of the following groups of structures/ organs have similar function? |
| A. | Typhlosole in earthworm, intestinal villi in rat and contractile vacuole in Amoeba. |
| B. | Nephridia in earthworm, Malpighian tubules in cockroach and urinary tubules in rat. |
| C. | Antennae of cockroach, tympanum of frog and clitellum of earthworm. |
| D. | Incisors of rat, gizzard (proventriculus) of cockroach and tube feet of starfish. |
| Answer» C. Antennae of cockroach, tympanum of frog and clitellum of earthworm. | |
| 2139. |
What distinguishes an insect from a crustacean? |
| A. | Number of eye |
| B. | Arrangement of nerve cord |
| C. | Number of appendages |
| D. | Presence of wings |
| Answer» D. Presence of wings | |
| 2140. |
Identify the figure with its correct name and phylum. |
| A. | Cucumaria Echinodermata |
| B. | Ascidia Urochordata |
| C. | Balanoglossus Hemichordata |
| D. | Hirudinaria Annelida |
| Answer» D. Hirudinaria Annelida | |
| 2141. |
Carapace is present on the dorsal surface of: |
| A. | Elephant |
| B. | Tortoise |
| C. | Python |
| D. | Alligator |
| Answer» C. Python | |
| 2142. |
In the members of class Scyphozoa: |
| A. | polyp stage is well developed. |
| B. | polyp stage is reduced. |
| C. | medusa stage is absent. |
| D. | medusa stage is reduced. |
| Answer» D. medusa stage is reduced. | |
| 2143. |
Scoliodon is called dog fish because of its: |
| A. | Carnivorous nature |
| B. | Long mouth |
| C. | Power of smell |
| D. | All of these |
| Answer» D. All of these | |
| 2144. |
Which of the following endoparasite of man is viviparous? |
| A. | Ascaris |
| B. | Wuchereria |
| C. | Taenia |
| D. | Dracunculus |
| Answer» B. Wuchereria | |
| 2145. |
Which of the following statement(s) is/are correct for class amphibia? (i) Body is divisible into head and trunk. (ii) Respiration is through gills only. (iiii) The heart is two chambered i.e. one auricle and one ventricle. (iv) Fertilisation is internal. |
| A. | Only (i) |
| B. | Only (iv) |
| C. | (i), (ii) and (iii) |
| D. | All of these |
| Answer» B. Only (iv) | |
| 2146. |
Which of the following statement(s) is/are correct regarding phylum aschelminthes?(i) The body is circular in cross-section hence known as roundworms.(ii) Alimentary canal is complete with a well- developed muscular pharynx.(iii) Sexes are separate (dioecious), i.e., males and females are distinct.(iv) Nephridia help in osmoregulation and excretion. |
| A. | (i) and (ii) |
| B. | (iii) and (iv) |
| C. | (i), (ii) and (iii) |
| D. | All of these |
| Answer» D. All of these | |
| 2147. |
Which of the following characteristic is probably most responsible for the great diversification of insects on land? |
| A. | Segmentation |
| B. | Antennae |
| C. | Bilateral symmetry |
| D. | Exoskeleton |
| Answer» E. | |
| 2148. |
Example of living fossil in arthropoda is: |
| A. | dm ex |
| B. | Triarthrus |
| C. | Peripatus |
| D. | Eupagurus |
| Answer» D. Eupagurus | |
| 2149. |
Which one of the following statement of animals is correctly described with no single exception in it? |
| A. | In chondrichthyes, notochord is persistent throughout life. |
| B. | All mammals are viviparous and possess diaphragm for breathing. |
| C. | All sponges are marine. |
| D. | All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal). |
| Answer» B. All mammals are viviparous and possess diaphragm for breathing. | |
| 2150. |
Crustacean which show commensalism with some coelenterates is: |
| A. | Cypris |
| B. | Hippa |
| C. | Crab |
| D. | Eupagurus |
| Answer» E. | |