Biology Section 6


  • Masses of dilated tortuous veins in the anorectal mucosa are known as Hemorrhoids.
  • Puccinia is a parasitic Fungus.
  • An illness which largely affects girls usually just after the onset of puberty is Anorexia nervosa.
  • Autotrophic organisms can exist in an exclusively Inorganic environment.
  • Loss of appetite due to the fear of becoming obese is Anorexia nervosa.
  • Strong chlorosis is due to the deficiency of Nitrogen in plants.
  • Stunted growth of roots is due to the deficiency of Phosphorus in plants.
  • The liquid that escapes during defrosting frozen meat contains Salmonella bacteria.
  • One of the commonest causes of food poisoning are the toxins produced by Campylobacter bacteria.
  • Puccinia commonly destroys Wheat.
  • Nodules on roots of leguminous plants have Nitrogen fixing bacteria.
  • Earthworm is an example of Detritus feeder.
  • All of the insectivorous plants are true Autotrophes.
  • Of the following, Animals have more variety of nutrition.
  • Incomplete or imperfect digestion is known as Dyspepsia.
  • The leaf is bilobed with midrib between them. The plant is Dionaea (Venus Flytrap).
  • Anus is surrounded by 2 types of muscles.
  • Canines are missing in herbivores.
  • Certain types of whales are also Filter feeder.
  • Jejunum is about 2.4 meters in length and comprising about two-fifths of the small intestine.
  • Hydra is an example of Macrophagous feeder.
  • Hepatic and Pancreatic secretions are also stimulated by a hormone produced by the intestinal mucosa called Secretin.
  • Parasites capable of living independently of their host at times are called Facultative parasite.
  • A painful burning sensation produced in the chest cavity usually associated with the back flush of acidic chyme into the esophagus is Pyrosis (Heartburn).
  • In planaria, numerous small branches which end blindly are called Intestinal caeca.
  • Hunger contractions are Peristalsis contractions.
  • Midgut in cockroach is a short narrow tube called Stomach.
  • The partly digested food is stored in Crop in cockroach.
  • How many species of fungi are known till now? 100000.
  • Which of the following group represents pathological fungi? Rusts, smuts, and molds.
  • Death cap/death angel (Amanita) and Jack O Lantern mushroom are examples of Poisonous mushrooms.
  • Yeasts are different from all the rest regarding the number of cells in its body.
  • Fungi which get their food directly from dead organic matter are called Decomposers.
  • How many species of mushrooms are edible? 200.
  • Root-like structures in saprotrophic fungi are called Rhizoids.
  • Penicillium reproduces via Conidia.
  • Parasites capable of living only on their living host are Obligate parasitic fungi.
  • Mode of nutrition in Penicillium is Saprotrophs.
  • Oyster mushroom is an example of a predator fungi that attack Round worms.
  • Lichen is a symbiotic mutualistic association of fungi with Green algae and cyanobacterium.
  • Foliose lichen are Leaf-like.
  • How many species of Ascomycota occur in lichen symbiotic association? 50%.
  • An association in which fungal hyphae penetrate the outer cells of the plant root forming coils, swellings, and minute branches and also extend out into the
  • surrounding soil is called Endomycorrhizae.
  • Which one of the following is the largest group of fungi? Ascomycota.
  • The Kingdom of recyclers is known as Kingdom Fungi.
  • According to the two-kingdom classification, fungi were placed in Kingdom Plantae.
  • At which stage in the life cycle of Rhizopus does meiosis take place? Formation of sporangiophore via germination of zygospore.
  • Ecological role of fungi as decomposers is only paralleled by Bacteria.
  • Which of the following is called black bread mold? Rhizopus.
  • Coenocytic hyphae are also known as Aseptate.
  • In which of the following example of fungi do dikaryotic hyphae exist for a long period? Basidiomycota.
  • Unicellular fungi which are non-hyphal is Yeast.
  • Parasitic fungi absorb nutrients directly from the living host cytoplasm with the help of special hyphal tips called Haustoria.
  • By which mechanism do unicellular yeast reproduce? Budding.
  • Constricting rings around nematodes are formed by Arthrobotrys.
  • Simple breaking of mycelium resulting in the formation of a new mycelium from each broken segment is called Fragmentation.
  • Type of lichen which tightly attaches to rocks is Crustose.
  • Mycorrhizae are found in about 95% of vascular plants.
  • Spores produced by slime molds develop into All of these (Swarm cells, Biflagellated cells, Amoeboid reproductive cells).
  • Germ theory of diseases has 4 postulates.
  • Some bacteria ranging occasionally to a size of 500 ┬Ám in length are Spirochetes.
  • Lime stone deposits are formed from Foraminiferans.
  • Plasmodium belongs to Apicomplexans.
  • Which of the following structure is not used for the locomotion of Protozoa? Cilia, Flagella, Pseudopodia, Spirilla.
  • Foraminiferans are characterized by the presence of Test.
  • Disease malaria is caused by Plasmodium.
  • Radiolarians have central capsule.
  • A major source of pollution in fresh water bodies is Spirogyra.
  • Sarcodina is named after its body which is ‘Sarcos’ means Flesh and ‘Dinos’ means Body.
  • 4 flagella are present in Trypanosoma.
  • Dino flagellates are Autotrophic.
  • Silica shell-bearing algae are known as Diatoms.
  • Protozoa that do not fit into other groups are classified as Amoeboids.
  • Which type of algae are smallest living cells? Blue green algae.
  • How many unequal cilia do the members of class Spirotrichea possess? 3.
  • Chlamydomonas reproduces asexually by means of Zoospores.
  • Algae are photosynthetic due to the presence of Chlorophyll.
  • Agar-agar is obtained from Gelidium and Gracilaria.
  • Protoplasmic level of organization is present in all groups of Algae.
  • Pyrrophyta are known as Fire algae.
  • Which of the following is an example of multicellular fresh water green algae? Ulva.
  • Algae contribute about how much percent of the total organic matter production of the biosphere? 50%.
  • Which of the following is commonly called Brown algae? Phaeophyta.
  • Which of the following is responsible for the ”red tide” in sea? Gonyaulax.
  • The nutrition of a Chlamydomonas cell is important for the Chlamydomonas cell is autotrophic.
  • Protozoans are thought to be closely related to Plants.
  • Which of the following algae is a chief producer in the oceanic food chain? Diatoms.
  • Which of the following are used as indicators of water pollution? Dinoflagellates.
  • Green algae are also known as Pteridophytes.
  • Agar, an important solidifying agent used in culture media is obtained from Gelidium.
  • How many species of planktonic diatoms have been estimated in the oceans? 5000.
  • Which of the following is marine and photosynthetic in nature? Pyrrophyta.
  • The parasite that causes amoebic dysentery in humans is Entamoeba histolytica.
  • Euglenoids are Unicellular flagellates.
  • Euglenoids have Eukaryotic cells.
  • Members of Euglenophyceae are mostly Freshwater.
  • Which of the following is a colonial form of Green Algae? Volvox.
  • The eyespot in Euglena is sensitive to Light.
  • Which of the following structures are used by Euglena for movement? Flagella.
  • The group containing parasitic flagellates with no means of locomotion is Zoomastigophora.

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