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MCQOPTIONS
This section includes 6820 Mcqs, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 851. |
The leaves of the Mimosa plant wilt when touched, because . . |
| A. | leaf tissue is injured |
| B. | inflation pressure of the base changes |
| C. | Plants have a nervous system |
| D. | leaves are very soft |
| Answer» C. Plants have a nervous system | |
| 852. |
Respiratory measurement instrument is called? |
| A. | potometer |
| B. | oximeter |
| C. | Autometer |
| D. | respirometer |
| Answer» E. | |
| 853. |
What is the name of the gas released during photosynthesis? |
| A. | Carbon dioxide |
| B. | oxygen |
| C. | nitrogen |
| D. | hydrogen |
| Answer» C. nitrogen | |
| 854. |
2 , 4 - is D ? |
| A. | insecticide |
| B. | explosives |
| C. | fungicide |
| D. | weedicide |
| Answer» E. | |
| 855. |
Which substance reduces the rate of transpiration? |
| A. | mucous |
| B. | pectin |
| C. | cellulose |
| D. | cutin |
| Answer» E. | |
| 856. |
Gibberellins isolated? |
| A. | from an algae |
| B. | from a fungus |
| C. | from a bacterium |
| D. | from a virus |
| Answer» C. from a bacterium | |
| 857. |
The device by which the growth rate of the stem gets water in the right form, is? |
| A. | hydrometer |
| B. | Axenometer |
| C. | Osmometer |
| D. | potometer |
| Answer» C. Osmometer | |
| 858. |
Which of the following trees requires maximum amount of water for its growth? |
| A. | Mango |
| B. | acacia |
| C. | Guava |
| D. | eucalyptus |
| Answer» E. | |
| 859. |
What is the end product of oxygen respiration? |
| A. | CO₂ |
| B. | O₂ and water |
| C. | CO₂ तथा O₂ |
| D. | ethyl alcohol |
| Answer» B. O₂ and water | |
| 860. |
Is pea plant? |
| A. | herb |
| B. | flower |
| C. | bush |
| D. | none of these |
| Answer» B. flower | |
| 861. |
get heroin? |
| A. | from betel nut |
| B. | from the Indian side |
| C. | from poppy poppy |
| D. | from tobacco |
| Answer» D. from tobacco | |
| 862. |
Which of the following is a man-made cereal? |
| A. | hordeum vulgare |
| B. | Triticale |
| C. | live table |
| D. | Triticum vulgare |
| Answer» C. live table | |
| 863. |
In which crop Azolla anabina biofertilizer is used |
| A. | wheat |
| B. | rice |
| C. | Mustard |
| D. | Cotton |
| Answer» C. Mustard | |
| 864. |
The drug obtained from the bark of cinchona was used to treat malaria, the synthetic drug that replaced this natural product is? |
| A. | chloromycetin |
| B. | chloroquine |
| C. | tetracycline |
| D. | ampicillin |
| Answer» C. tetracycline | |
| 865. |
What is the botanical name of tea plant? |
| A. | There was sinensis |
| B. | Sciences |
| C. | Thea sinensis |
| D. | kafia arabica |
| Answer» D. kafia arabica | |
| 866. |
Pulse plant is related to? |
| A. | by composition |
| B. | from solnancy |
| C. | leguminous |
| D. | raphanes |
| Answer» D. raphanes | |
| 867. |
Chilgoza is obtained from the seeds of which of the following species? |
| A. | pine |
| B. | palm |
| C. | Sycus |
| D. | Cedar |
| Answer» B. palm | |
| 868. |
Potato is placed in Solanaceae family because . . . |
| A. | Joint party |
| B. | Panchayati Pujya |
| C. | Dallan Punkesar |
| D. | ovary |
| Answer» E. | |
| 869. |
Goldsmith's watt is the seed of which plant? |
| A. | Ksenia |
| B. | purpurea |
| C. | abrus precatorius |
| D. | kagenskagen |
| Answer» D. kagenskagen | |
| 870. |
Is it related to cotton? |
| A. | cruciferous |
| B. | Composite |
| C. | Malvasi |
| D. | Rennculesi |
| Answer» D. Rennculesi | |
| 871. |
The longest living tree is? |
| A. | eucalyptus |
| B. | Sequoia |
| C. | Cedar |
| D. | Foliage |
| Answer» C. Cedar | |
| 872. |
Which of the following parts of the plant is used to make saffron spice? |
| A. | leaf |
| B. | petal |
| C. | external party |
| D. | stigma |
| Answer» E. | |
| 873. |
What is the largest total? |
| A. | lilies |
| B. | solanacea |
| C. | कुकुरबिटेसी |
| D. | Composite |
| Answer» E. | |
| 874. |
pecies PlantarumandSistema Naturiwere written by? |
| A. | by angler |
| B. | by Linnaeus |
| C. | by hooker |
| D. | by Welles |
| Answer» C. by hooker | |
| 875. |
Which of the following fibers is not a product of the stem of a plant? |
| A. | Sun |
| B. | jute |
| C. | jute |
| D. | Cotton |
| Answer» E. | |
| 876. |
What is bamboo classified into? |
| A. | tree |
| B. | grass |
| C. | tree |
| D. | weed |
| Answer» C. tree | |
| 877. |
Is Compositae a Totally Harmful Plant? |
| A. | Marigold |
| B. | parthenium |
| C. | sunflower |
| D. | All of the above |
| Answer» C. sunflower | |
| 878. |
What is a fast seed crop related to? |
| A. | Malvasi |
| B. | crucifera |
| C. | solanacea |
| D. | Composite |
| Answer» C. solanacea | |
| 879. |
Where is the commonly used spice clove obtained? |
| A. | from the origin |
| B. | from the stem |
| C. | from flower bud |
| D. | from fruit |
| Answer» D. from fruit | |
| 880. |
What is the scientific name of wheat plant? |
| A. | live table |
| B. | Orija Setiva |
| C. | Hardium bulge |
| D. | triticum aestivum |
| Answer» E. | |
| 881. |
What is the reproductive cycle of a flower? |
| A. | Pumang and Jiang |
| B. | outer sludge and sludge |
| C. | Dalpunj and Pumang |
| D. | outer coulomb and gypsum |
| Answer» B. outer sludge and sludge | |
| 882. |
To which family do cereal plants belong? |
| A. | Malvasi |
| B. | solanacea |
| C. | Gremini |
| D. | cruciferous |
| Answer» D. cruciferous | |
| 883. |
pollination by water |
| A. | zoophilly |
| B. | hydrophyly |
| C. | Entomophilia |
| D. | Animophilia |
| Answer» C. Entomophilia | |
| 884. |
Is Anemophily Pollination? |
| A. | by animals |
| B. | by insects |
| C. | by air |
| D. | by water |
| Answer» D. by water | |
| 885. |
Is onion a modified form? |
| A. | stem |
| B. | root |
| C. | of leaves |
| D. | of fruit |
| Answer» B. root | |
| 886. |
Turpentine oil is obtained from? |
| A. | from netum |
| B. | from micham |
| C. | from cedar |
| D. | in pine |
| Answer» E. | |
| 887. |
Which of the following is a modified stem? |
| A. | carrot |
| B. | sweet potato |
| C. | Coconut |
| D. | potato |
| Answer» E. | |
| 888. |
Is it ginger? |
| A. | Transformed root |
| B. | rhizome |
| C. | tuber |
| D. | bulb |
| Answer» C. tuber | |
| 889. |
The smallest flower in the world is? |
| A. | Reflexia |
| B. | Lotus |
| C. | Rose |
| D. | Wolfia |
| Answer» E. | |
| 890. |
Does the seed develop? |
| A. | from pistils |
| B. | from seeds |
| C. | from the ovaries |
| D. | from anthers |
| Answer» C. from the ovaries | |
| 891. |
Overhead meets origin? |
| A. | in tinaspora |
| B. | in amarbel |
| C. | in orchids |
| D. | in Indian rubber |
| Answer» D. in Indian rubber | |
| 892. |
Pollination by snails is called? |
| A. | Jufili |
| B. | Entomophilia |
| C. | Chiropractic |
| D. | Melekofili |
| Answer» E. | |
| 893. |
The seeds which are scattered by the wind are often. . . |
| A. | dark colored |
| B. | light in weight |
| C. | heavy in weight |
| D. | round in shape |
| Answer» C. heavy in weight | |
| 894. |
What is the most important food produced? |
| A. | from the roots |
| B. | from stems |
| C. | from fruits |
| D. | from husbands |
| Answer» D. from husbands | |
| 895. |
What is the edible part of litchi fruit? |
| A. | fleshy push |
| B. | eril |
| C. | mid fruit wall |
| D. | cotyledon |
| Answer» C. mid fruit wall | |
| 896. |
Can seedless fruit be obtained? |
| A. | by the behavior of wicker |
| B. | by the behavior of hormones |
| C. | Plants at 70 degrees C. keeping on |
| D. | placing plants in bright light |
| Answer» C. Plants at 70 degrees C. keeping on | |
| 897. |
What are the fruits of coconut and mango? |
| A. | pom |
| B. | berry |
| C. | droop |
| D. | cask |
| Answer» D. cask | |
| 898. |
The largest flower in the world is produced? |
| A. | by Amarbel |
| B. | by Reflexia |
| C. | by lonthus |
| D. | by Drosera |
| Answer» C. by lonthus | |
| 899. |
Is zoophile pollinated? |
| A. | by animals |
| B. | by water |
| C. | by air |
| D. | by insect |
| Answer» B. by water | |
| 900. |
Do orchids have villamen roots? |
| A. | to support |
| B. | for carbohydrate assimilation |
| C. | to absorb moisture |
| D. | to exchange gases |
| Answer» D. to exchange gases | |