Objective Questions In Botany – General Science Materials For Competitive Examinations Part 12
501. Quinine is made from cinchone bark
502. Phylllanthus nirui is a medicinal herb and it is used to cure jaundice
503. The dark reaction was worked out by an American scientist called Melvin Calvin
504. “Breathing roots” of mangrove plants are also called both (B) and (C)
505. Hydroponics is plant growth in liquid culture medium
506. Red tides are causd by red dinoflagellates
507. In angiosperms ovules develop into seeds
508. ‘Tikka’ disease is found in groundnut
509. The unicellular algae used in space craft to regulate oxygen supply is chlorella
510. Who is the well known Indian paleobotanist? Birbal sahni
511. Sharbati, Sonara, Kalyan Sona are the improved varieties of wheat
512. An algae yielding single cell protein of economic importance is spirulina
513. The process of transfer of desirable characters from on especies to other is known as selection
514. Wide variety of plants are observed in this tropical regions
515. Mycotoxins are pollutants because they affect most commonly water
516. Orchards are fruit garden
517. Foreign countries want to get plant materials of this plant from our country keeping in view the problem of chemical pesticides Azadirachta indica (neem)
518. Nitrogen fixation is generally brought about by Bacteria and blue green algae
519. “Pasteurization” means boiling and cooling to prevent microbial spoilage
521.Why is sprouted gram considered more nutritious? germinating seeds produce enzymes which are a rich source of protein
522. Which metal is present in green leaves? Magnesium
523. Pollinium found in the family Asclepiadaceae and Orchidaceae
524. Legume root nodule contains a protein pigment known as Leghaemoglobin
525. From the following,which one is edible fungi? Agaricus
526. Which type of cell gives mechanical support to the plant?Sclerenchyma
527. A sequence of nucleotides that specifies a particular polypeptide chain is called as gene
528. Cell wall is chemically made up of lignin, pectin and cellulose
529. Endocarp of fruit wall is innermost layer of fruit wall
530. Which group of organism is responsible for enriching soil fertility is an area? Micro-organisms
531. Amphibious plants with non-vascular nature group is called as bryophytes
532. Biggest herbarium located in south India is coimbatore
533. Smallest flowering plant is wolffia
534. Economic use of the genus araucaria gymnosperm plant is ornamental plant
535. First plant viruses were discovered in tobacco
536. The most characteristic feature of arthropoda is jointed appendages
537. The most successful vector in higher plants Ti-plasmid
538. one of the following is essential for seed germination water
539. The process by which RNA is formed from DNA is called transcription
540. Some plants develop fruits without fertilization, this phenomenon is called parthenocarpy
541.Which one of sthe following diseases is caused by viral infection? jaundice
542. Symbolic nitrogen fixation is done by Rhizobium
543. Lack of which element makes the plant insectivorous?Nitrogen
544. Founder of binomial nomenclature is Cark Linnaeus
545. Part of cinchona plant from which the drug quinine is obtained is bark
546. Turbantine is obtained from the plants of coniferales
547. Clover,the commonly used spice is obtained from the flower bud
548. Which one of the following p;ants produces allergenic pollen grains? congress grass
549. Opium is obtained from cannabis
550. Which one of the following is correctly matched? photosynthesis –Starch synthesis
