Biology MCQs For Class 11 and 9th Class

biology mcqs for class 11
biology mcqs for class 11

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Biology MCQs For Class 11 and 9th Class

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Biology MCQs For Class 11 and 9th Class

1101. All insects have how many parts of legs?

A. 4
B. 2
C. 3
D. 6

1102. In all arthropods,the body is covered with a chittinous cuticle which is secreted by the____________?

A. Endodermis
B. Mesophyll
C. Chitin
D. Epidermis

1103. In many which phylum the body of an organisms is usually divided in there regions called head, thorax and abdomen?

A. Arthropods
B. Chordata
C. Annelida
D. Echinodermata

1104. In man which organisms cause abscesses on the skin of arms or legs?

A. Ascaris
B. Bacteria
C. Ring worm
D. Suinea worm

1105. Chitin in cockroach is absent in____________?

A. Epicuticle
B. Exocuticle
C. Endocuticle
D. All of these

1106. Melanin pigment in cockroach is found in__________?

A. Epicuticle
B. Exocuticle
C. Endocuticle
D. All of these

1107. The bristles on the body of the cockroach arise from__________?

A. Epidermis
B. Trichogen cell
C. Basement membrane
D. Malpighian cell

1108. The wax present on the body of cockroach is secreted:

A. Mucocytes
B. Leucocytes
C. Oenocytes
D. Granulocytes

1109. Which organisms are sometimes called the ” pastures of the sea”?

A. Diatoms
B. Radiolarians
C. Dinoflagellates
D. Foraminiferans

1110. Diatoms belong to___________?

A. Chrysophyta
B. Bacillariophyceae
C. Xanthophyceae
D. Both A. and B.

1111. Which one of the following is representing the group of diatoms?

A. Pinnularia, Navicula, Cymbella, Melosira
B. Euglenamorpha, Hedneria , Heteronema, Colacium
C. Nostoc, Anabaena, Aulosira, Cylindrospermum
D. Cochlodinium, Gymnodinium, Lenodinium, Peridinium

1112. Diatoms are found in__________?

A. Phytoplanktonic population
B. Freshwater lakes and ponds
C. Marine environment
D. All of the above

1113. Centric discoid form of diatoms is__________?

A. Diplaneis
B. Coscinodiscus
C. Camphyloneiscus
D. Stephanodis

1114. Microfossile often present in petroleum producing formationsare those of__________?

A. Diatioms
B. Heliozoans
C. Radiolarians
D. Foraminiferans

1115. Cell wall is richly impregnated with silica in__________?

A. Rhodophyta
B. Phaeophyta
C. Baciliariophyta
D. Euglenophyta

1116. The cell wall is usually composed of two overlapping halves called epitheca and hypotheca in __________?

A. Diatoms
B. Desmids
C. Pyrrophyta
D. Chlorophyta

1117. Unlike other algae, diatoms do not readily decay due to___________?

A. Nonliving cells
B. Siliceous wall
C. Mucilaginous wall
D. Water proof cell

1118. Cell wall is extremely well preserved in fossil specimens in__________?

A. Diatoms
B. Dinoflagellates
C. Slime moulds
D. None of these

1119. Empty diatom cells are called___________?

A. Raphe
B. Valves
C. Frustule
D. Girdles

1120. Diatom frustule/ shell is made of_____________?

A. Silica
B. Calcium carbonate
C. Manesium carbonate
D. Both B. and C.

1121. The chloroplasts of diatoms and chrysophycean algae do not possess____________?

A. Chloryphyllpigments
B. Enzymes for photolysis
C. Defined grana and stroma
D. Carotenes with chlorophylls

1122. Oil body is found in the cells of___________?

A. Diatoms
B. Slime moulds
C. Chlorophycean forms
D. None of the these

1123. Diatoms stay afloat due to___________?

A. Flagella
B. Stored lpids
C. Pseudopodia
D. All of these

1124. Diatomaceous earth is used for making __________?

A. Fertilizers
B. Weedicides
C. Insecticides
D. Fire proof bricks

1125. Locomotion in diatoms is carried out with the help of__________?

A. Valve
B. Raphe
C. Pseudopodium
D. Cilia or flagella

1126. Golden brown colour of diatoms is due to presence of__________?

A. Mycoxanthin, mucoxanthin and myxoxanthophylls
B. Alpha and beta carotenes and myxoxanthin
C. Fucoxanthin, diatoxanthin, diadinoxanthin
D. None of the above

1127. Which of the following is not nocturnal?

A. Bedbug
B. Mosquito
C. Butterfly
D. Cockroach

1128. Which one of these is an insect?

A. Mite
B. Spider
C. Moth
D. Scorpion

1129. A moth is closely related to_________?

A. Wasp
B. Beetle
C. Cricket
D. Butterfly

1130. Which one of these is a set of useful insects?

A. Sandfly , butterfly, hoeybee
B. Sikmoth, honeybee, locust
C. Honeybee, silkmoth, tsetse fly
D. Honeybee , lac insect, cochineal insect

1131. Which of the following organ is responsible for blood filtration:

A. Liver
B. Kidney
C. Lungs
D. Heart

1132. Which of the following organ is responsible for body metabolism?

A. Kidney
B. Liver
C. Lungs
D. Heart

1133. The part of the brain that connects the two hemispheres of the brain is called____________?

A. Corpus callosum
B. Medulla oblongata
C. Cerebral cortex
D. Cerebellum

1134. In which phase of cell cycle cell organelles are formed?

A. S Phase
B. G1 Phase
C. G2 Phase
D. G0 Phase

1135. Vacuoles are fluid filled sacs surrounded by a membrane called__________?

A. tonoplast
B. nuclear membrane
C. cell membrane
D. cell wall

1136. During the process of cell division which of the following divides first?

A. cytodplasm
B. vacuoles
C. mitochondria
D. nucleus

1137. Which of the following manufactures carbohydrates by the process of photosynthesis?

A. chloroplast
B. chromoplast
C. leucoplast
D. All of these

1138. which of the following is called protein synthesizing machine?

A. mitochondria
B. nucleus
C. chromosomes
D. ribosomes

1139. Cell wall is the non living, outermost boundary of__________cell?

A. plant
B. bacterial
C. fungal
D. all the above

1140. The light microscope can make the object_________times bigger?

A. 10 times
B. 100 times
C. 1000 times
D. 10000 times

1141. Which of the following is a selectively permeable membrane?

A. cell wall
B. cytoplasm
C. cell membrane
D. none of these

1142. Which of the following endoplasmic reticulum has no ribosome on its surface?

A. smooth
B. rough
C. both
D. all of above

1143. which of the following gas discovered by Scheele?

A. chlorine
B. hydrogen
C. oxygen
D. carbon dioxide

1144. Simple tissues and complex tissues are two groups of_________tissues.

A. Meristematic
B. Permanent
C. Epidermal
D. Supporting

1145. which of the following consists of the dead cells?

A. Parenchyma

B. collenchyma
C. sclerenchyma
D. none of these

1146. Xylem and phloem are conducting tissues found in ……….?

A. animals
B. plants
C. micro orgamnisms
D. all the above

1147. Human brain contains__________neurons.

A. 10,000,00
B. 100,000,000
C. 100,000,000,000
D. 1000

1148. Which of the following are connective tissues?

A. cartilage
B. bone
C. blood
D. all the above

1149. Which one of these structures involved in replication of bacterial dna?

A. chromosomes
B. pilli
C. plasmid
D. mesosome

1150. Adult human brain is about_________% of the total body weight.

A. 2%
B. 3%
C. 7%
D. 8%

1151. Humans can hear in the range of ______ to _______Hertz (Hz).?

A. 10 Hz to 10,000 Hz.
B. 20 Hz to 20,000 Hz.
C. 30 Hz to 30,000 Hz.
D. 40 Hz to 40,000 Hz.

1152. branches of biology and medicine concerned with the structure and function of plant and animal cells is called___________?

A. Nephrology
B. Semiology
C. Orology
D. Cytology

1153. Which Part of the Brain Regulates Body Temperature?

A. cerebellum
B. cerebrum
C. hypothalamus
D. medulla

1154. A Vegetable containing sulphur is____________?

A. Potato

B. Cabbage

C. Brinjal
D. Pumpkin

1155. Which type of motions are present in solid?

A. translational
B. rotational
C. vibrational
D. all of these

1156. If a man having blood group AB marries a woman who is heterozygous for blood group, what is the probability of their first child having blood group B?

A. 40%
B. 45%
C. 50%
D. 71%

1157. Animals living in the Tree trunks are known as___________?

A. Arboreal
B. Volant
C. Amphibious
D. Aquaticx

1158. Who discovered the peptic ulcer causing bacteria H.PYLORI?

A. Robert Hook
B. James parkinson
C. Dr Barry Marshall and dr Robin Warren
D. None of these

1159. In HomoSapiens (Human) the fertilization occurs in the___________?

A. Uterus
B. Ovaries
C. Oviduct
D. Cervix

1160. The following vegetable have 90% of water?

A. Cabbage
B. Lady finger(okra)
C. Cassava
D  Non of these

1161. Splitting of glucose relates to_________?

A. respiration
B. photorespiration
C. glycolysis
D. pyruvic acid

1162. Artherosclerosis is a major condition leading to__________?

A. heart attack
B. hypertension
C. stroke
D. tumor

1163. Shrinkage of protoplast due to exosmosis of water is__________?

A. imbibition
B. plasmolysis
C. deplasmolysis
D. adhesion

1164. The normal pH of human blood is____________?

A. 6.4
B. 7.0
C. 7.4
D. 7.5

1165. Bean shaped cells in plants are_________?

A. mesophyll cells
B. xylem cells
C. phloem cells
D. guard cells

1166. Villi and microvilli increase__________?

A. digestion
B. assimilation
C. absorption
D. ingestion

1167. Water potential of pure water is__________?

A. zero
B. one
C. negative
D. two

1168. The respiratory problem most common in smokers is_________?

A. tuberculosis
B. emphysema
C. asthma
D. cancer

1169. Parabronchi are present in__________?

A. cockroach
B. frog
C. fish
D. birds

1170. The utilization of the products of digestion is called___________?

A. ingestion
B. absorption
C. assimilation
D. both a and b

1171. Kangaroo has an abdominal pouch known as__________?

A. placenta
B. guttural pouch
C. marsupial
D. all of these

1172. Earthworm lives in___________?

A. sea water
B. moist soil
C. fresh water
D. none of these

1173. Sickle cell anemia was discovered by_________?

A. Vernon Ingram
B. Sanger
C. Miescher
D. none of these

1174. Rich source of energy in seimen is__________?

A. glucose
B. fructose
C. lactose
D. sacrose

1175. The foetus is protected from the mechanical damage by the__________?

A. cervix
B. vagina
C. uterus
D. amniotic fluid

1176. Release of the ovum from ovary is called__________?

A. fertilization
B. ovulation
C. implantation
D. none of these

1177. Detachment of myosin head and actin in rigor mortis occurs due to__________?

A. stored ATP in body
B. hypercalcemia
C. autolysis in body
D. hyperactivity of mitochondria

1178. Which bone is called beauty bone in women?

A. sternum
B. clavicle
C. maxilla
D. radius

1179. The plants which produce embryo but lack vascular tissues and seeds are placed in_________?

A. bryophytes
B. pteridophytes
C. tracheophytes
D. all of these

1180. Higher vascular plants are also called__________?

A. flowering plants
B. seed plants
C. ferns
D. none of these

1181. In all coelentrates endoderm give rise to__________?

A. nervous system
B. digestive system
C. reproductive system
D. circulatory system

1182. Liver fluke is parasite in the liver of__________?

A. cattle
B. sheep
C. goat
D. all of these

1183. Amoeba moves in water with the help of locomotory organs called_________?

A. tube feet
B. cilia
C. pseudopodia
D. flagella

1184. Snails belong to_________?

A. gastropods
B. bivalves
C. arthropods
D. platyhelminthes

1185. In many which phylum the body of an organisms is usually divided in there regions called head, thorax and abdomen?

A. echinodermata
B. mollusca
C. nematoda
D. arthropoda

1186. In human beings influenza is caused by_________?

A. bacteria
B. protist
C. virus
D. fungi

1187. Non-enveloped naked viruses are known as___________?

A. prions
B. bacteriophages
C. oncoviruses
D. virions

1188. Gram +ve bacteria on treatment with crystal violet dye give _________colour?

A. red
B. green
C. purple
D. pink

1189. Malarial parasite is injected into man as__________?

A. sporozoites
B. merozoites
C. zygote
D. none of these

1190. The terms procariotique and eucariotique were proposed by___________?

A. Whittaker
B. Chatton
C. Haeckel
D. Margulis and Schwartz

1191. Outside the thallus of Marchantia there are special structures called__________?

A. stem tuber
B. rhizoids
C. sporangium
D. none of these

1192. The vascular plants are termed as____________?

A. tracheophytes
B. bryophytes
C. pteridophytes
D. all of these

1193. Tobacco mosaic virus was crystallized by__________?

A. Pasteur
B. Chamberland
C. Stanely
D. Ivanowski

1194. Flagella are composed of________?

A. micro tubules
B. micro filaments
C. intermediate filaments
D. glycoproteins

1195. The life and activities of a cell is controlled by__________?

A. cytoplasm
B. nucleus
C. vacuole
D. mitochondria

1196. Accumulation of lipid molecules in brain cells lead to____________?

A. paralysis
B. oedema
C. mental retardation
D. all of these

1197. Accumulation of lipid molecules in brain cells lead to__________?

A. paralysis
B. oedema
C. mental retardation
D. all of these

1198. The simplest amino acid is_________?

A. alanine
B. glycine
C. valine
D. phenylalanine

1199. They are present in the underground parts of the plants and stored food?

A. leucoplast
B. chromoplast
C. chloroplast
D. stem

1200. They are widespread as protective coatings on fruits and leaves?

A. cholesterol
B. waxes
C. chitin
D. all of these

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