MCQOPTIONS
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MCQOPTIONS
This section includes 1844 Mcqs, each offering curated multiple-choice questions to sharpen your Grade10 knowledge and support exam preparation. Choose a topic below to get started.
| 1101. |
The species of bacteria that reproduce under unfavorable conditions by the formation of spores are |
| A. | paramecium and corals |
| B. | euglena and hydra |
| C. | clostridium and bacillus |
| D. | Rhizopus and amoeba |
| Answer» D. Rhizopus and amoeba | |
| 1102. |
The micropyle is used by the plant for the absorption of |
| A. | salts |
| B. | minerals |
| C. | water |
| D. | sugar |
| Answer» D. sugar | |
| 1103. |
Considering the budding, the animals whose buds does not detach from the body of their parents is |
| A. | euglena |
| B. | paramecium |
| C. | amoeba |
| D. | corals |
| Answer» E. | |
| 1104. |
For the germination of seeds in most plants, the optimum temperature is |
| A. | 20-25 °C |
| B. | 30-35 °C |
| C. | 25-30 °C |
| D. | 2-20 °C |
| Answer» D. 2-20 °C | |
| 1105. |
The seedless fruits can be grown by the method of |
| A. | diploid vegetation |
| B. | vegetative propagation |
| C. | adventitious propagation |
| D. | tuber propagation |
| Answer» C. adventitious propagation | |
| 1106. |
With the help of bacteria, the ammonia is transformed into |
| A. | ammonia nitrous |
| B. | ammonium nitrate |
| C. | nitrites |
| D. | nitrates |
| Answer» D. nitrates | |
| 1107. |
The group of same species organisms that live in specific habitat at a specific time is classified as |
| A. | ecosystem |
| B. | population |
| C. | community |
| D. | biosphere |
| Answer» C. community | |
| 1108. |
The animals in the food chain that are available in abundance are present at the |
| A. | middle of food chain |
| B. | center of biomass pyramid |
| C. | beginning of food chain |
| D. | end of the food chain |
| Answer» D. end of the food chain | |
| 1109. |
All populations that live in a habitat and interact with each other are called |
| A. | ecosystem |
| B. | biosphere |
| C. | community |
| D. | eco niche |
| Answer» D. eco niche | |
| 1110. |
The pH of acid rain is |
| A. | 3 to 5 |
| B. | 4 to 6 |
| C. | 3 to 9 |
| D. | 3 to 6 |
| Answer» E. | |
| 1111. |
A thin layer around the earth is made by |
| A. | biome |
| B. | individual |
| C. | biosphere |
| D. | community |
| Answer» D. community | |
| 1112. |
The interactions between the same species members are known as |
| A. | co-dominance interactions |
| B. | dominance interactions |
| C. | intraspecific interactions |
| D. | interspecific interactions |
| Answer» D. interspecific interactions | |
| 1113. |
The non-living factors present in the ecosystem are called |
| A. | antibiotic components |
| B. | biotic components |
| C. | abiotic components |
| D. | decomposers |
| Answer» D. decomposers | |
| 1114. |
The concept of ecological pyramids is first proposed by |
| A. | Charles Darwin |
| B. | Nikola tesla |
| C. | Marie curie |
| D. | Charles Elton |
| Answer» E. | |
| 1115. |
The parasites that live inside the host body to get the shelter and food are called |
| A. | digestion parasites |
| B. | synthetic parasites |
| C. | endoparasite |
| D. | ectoparasite |
| Answer» D. ectoparasite | |
| 1116. |
The term homozygous is also called |
| A. | dominant breeding |
| B. | recessive breeding |
| C. | true breeding |
| D. | free breeding |
| Answer» D. free breeding | |
| 1117. |
All the instructions for the proper functions of a cell are carried by |
| A. | genes |
| B. | Deoxyribonucleic acid (DNA) |
| C. | chromosomes |
| D. | chromatin |
| Answer» C. chromosomes | |
| 1118. |
The law which states that traits are independently inherited and are different is called |
| A. | law of co-dominance |
| B. | law of segregation |
| C. | law of dependent assortment |
| D. | law of independent assortment |
| Answer» E. | |
| 1119. |
In Mendel's experiment, the parental generation of the pea plant is known as |
| A. | G2 generation |
| B. | G1 generation |
| C. | P2 generation |
| D. | P1 generation |
| Answer» E. | |
| 1120. |
The plant that was selected for Mendel, work |
| A. | corn plant |
| B. | maize plant |
| C. | sugar cane |
| D. | pea plant |
| Answer» E. | |
| 1121. |
The part of the uterus where sperms are deposited is called |
| A. | fallopian tubes |
| B. | opening of birth canal |
| C. | opening of urethra |
| D. | cervix |
| Answer» E. | |
| 1122. |
Tulips and onions reproduce by |
| A. | corms |
| B. | spores |
| C. | bulbs |
| D. | rhizomes |
| Answer» D. rhizomes | |
| 1123. |
The spore sacs are thickly walled formed by the body cells of Rhizopus at its reproductive age are called |
| A. | sporangia |
| B. | spores |
| C. | cysts |
| D. | endosperms |
| Answer» B. spores | |
| 1124. |
The haploid macrospore is produced by meiosis inside each |
| A. | ovule |
| B. | stamen |
| C. | anther |
| D. | carpel |
| Answer» B. stamen | |
| 1125. |
The phenomena in which the sporophyte and gametophyte generations alter each other in the plant life cycle is called |
| A. | fragmentation of generations |
| B. | alternation of generations |
| C. | cloning of generations |
| D. | grafting of generations |
| Answer» C. cloning of generations | |
| 1126. |
In which year Charles Darwin died? |
| A. | 1904 |
| B. | 1902 |
| C. | 1882 |
| D. | 1892 |
| Answer» D. 1892 | |
| 1127. |
The number of chromosomes that are combined in fertilization from each parent is |
| A. | equal chromosomes |
| B. | more chromosomes from male |
| C. | more chromosomes from female |
| D. | inversely counted |
| Answer» E. | |
| 1128. |
The number of bonds between thymine and adenine is |
| A. | two |
| B. | three |
| C. | four |
| D. | five |
| Answer» B. three | |
| 1129. |
Darwin proposed the mechanism of organic evolution in |
| A. | 1837 |
| B. | 1835 |
| C. | 1837 |
| D. | 1838 |
| Answer» E. | |
| 1130. |
The bonds between thymine and adenine are made of |
| A. | nitrogen |
| B. | hydrogen |
| C. | calcium |
| D. | phosphorus |
| Answer» C. calcium | |
| 1131. |
The units of inheritance carried by chromosomes are called |
| A. | genes |
| B. | nucleotide |
| C. | oogenesis |
| D. | spermatogenesis |
| Answer» B. nucleotide | |
| 1132. |
What is meant by the term "true-breeding"? |
| A. | same breeding |
| B. | different breeding |
| C. | homozygous |
| D. | heterozygous |
| Answer» D. heterozygous | |
| 1133. |
Dominant alleles are represented by |
| A. | bold letters |
| B. | italics |
| C. | capital letters |
| D. | lower case letters |
| Answer» D. lower case letters | |
| 1134. |
The sequence of amino acids (R-CH(NH2)-COOH) of Deoxyribonucleic Acid (DNA) is controlled by the sequence of |
| A. | dominant proteins |
| B. | nucleosomes |
| C. | nucleotides |
| D. | chromatin |
| Answer» D. chromatin | |
| 1135. |
The allele which is not expressed is called |
| A. | recessive allele |
| B. | dominant allele |
| C. | loci |
| D. | phenotype |
| Answer» B. dominant allele | |
| 1136. |
The alleles that are represented by capital letters are |
| A. | dominant allele |
| B. | recessive allele |
| C. | hybrid allele |
| D. | monohybrid allele |
| Answer» B. recessive allele | |
| 1137. |
The law which states that "Genes of different traits can segregate independently during the formation of gamete" is known as |
| A. | law of independent assortment |
| B. | law of segregation |
| C. | law of dominance and uniformity |
| D. | all of above |
| Answer» B. law of segregation | |
| 1138. |
On comparing wrinkled seeded plant and round-seeded plant, the round-seeded pea plant is classified as |
| A. | genotype |
| B. | dominant |
| C. | recessive |
| D. | phenotype |
| Answer» C. recessive | |
| 1139. |
How many hydrogen bonds are present between cytosine and guanine? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 1140. |
What is the term used for a cross in which two contrasting traits are studied at a time? |
| A. | dihybrid cross |
| B. | monohybrid cross |
| C. | genotype |
| D. | phenotype |
| Answer» B. monohybrid cross | |
| 1141. |
The process in which sequence of nucleotides of DNA is copied in the form of mRNA nucleotides is called |
| A. | denomination |
| B. | translation |
| C. | segregation |
| D. | transcription |
| Answer» E. | |
| 1142. |
The structure which is responsible for the formation of sperms is known as |
| A. | seminiferous tubules |
| B. | prostate tubules |
| C. | scrotum tubes |
| D. | seminal tubes |
| Answer» B. prostate tubules | |
| 1143. |
The examples of flowers that are pollinated by wind are |
| A. | buttercup and rose |
| B. | sunflower |
| C. | orchid and wall flower |
| D. | corn and willow |
| Answer» E. | |
| 1144. |
The generation of the plant in which spores are produced is called |
| A. | zoophyte generation |
| B. | bryophyte generation |
| C. | sporophyte generation |
| D. | gametophyte generation |
| Answer» D. gametophyte generation | |
| 1145. |
Considering the oogenesis, the ovary structures follicles carry |
| A. | diploid spermatogonia |
| B. | diploid oogonia |
| C. | haploid oogonia |
| D. | haploid spermatogonia |
| Answer» C. haploid oogonia | |
| 1146. |
The kind of fertilization in which two fusions are involved is classified as |
| A. | nuclei fertilization |
| B. | double fertilization |
| C. | self fertilization |
| D. | ovule fertilization |
| Answer» C. self fertilization | |
| 1147. |
Blood glucose concentration falls because of |
| A. | glucagon |
| B. | insulin |
| C. | glucose |
| D. | glycogen |
| Answer» C. glucose | |
| 1148. |
Hormone epinephrine is secreted by |
| A. | thyroid gland |
| B. | pituitary gland |
| C. | parathyroid gland |
| D. | adrenal gland |
| Answer» E. | |
| 1149. |
The cerebrospinal fluid is present within |
| A. | thalamus |
| B. | axon |
| C. | cell body |
| D. | ventricles |
| Answer» E. | |
| 1150. |
Which of the following conduct impulses away from the cell body? |
| A. | nodes of ranvier |
| B. | Schwann cells |
| C. | axons |
| D. | dendrites |
| Answer» D. dendrites | |