A true species comprises of a population
1.Interbreeding
2.Sharing the same niche
3. Reproductively isolated
4. Feeding over the same food
Posted Date:-2021-03-06 08:20:03
Among the following choose the correct option that best describes the characteristics of spirogyra.
1.Multicellular, auto trophic, root like rhizoids.
2.Cytoplasmic strands, autotrophic, presence of rhizome.
3.Presence of male cones, nonvascular, filaments.
4.Filamentous, presence of Cytoplasmic strands, presence of pyrenoids.
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Choose the vascular plants out of these.
1.mosses
2. liverworts
3.hornworts
4.ferns
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In which organism flame cells form the excretory system?
1.flatworms
2.earthworms
3.insects
4.crabs
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One of the first acts in taxonomy is
1. Identification
2. Description
3. Naming
4.Classification
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Regulation of cells’ activity takes place through
1. Flow of substances
2. Flow of energy
3. Flow of hormones
4.Flow of smoke
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Taxonomic hierarchy refer to
1.Classification of species based on the fossil record
2.A list of botanists or zoologists who have worked on the taxonomy of a species or group
3.a group of senior taxonomists who decide the nomenclature of animals and plants
4. Stepwise arrangement of all categories for classification of animals and plants
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What does a bacteria lack?
1.endoplasmic reticulum
2.DNA.
3.cell wall
4.cytoplasm
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What is not possessed by bacteria?
1. membrane bound organelles
2.nucleus
3.nucleolus
4.all of these
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Which phylum of animals is also called flatworms?
1.Porifera
2.Coelenterata
3.Platyhelminthes
4. Nematoda
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Angiospermae is a division of kingdom Plantae. The main characteristic feature of angiosperms is:
1.Seeds are naked in fruits
2.Seeds are covered with coats and are in fruits
3.Fruits are without seeds
4.Seeds are naked without fruits
Posted Date:-2021-03-06 08:20:03
Choose the option that best describes the characteristics of the kingdom to which the mushroom belongs:
1.Unicellular prokaryotic organisms
2.Saprophytic, eukaryotic, multicellular organisms
3.Saprophytic, eukaryotic, multicellular organisms
4.Autotrophic eukaryotic organisms
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Compared to genus, which of the following is less general in characters?
1.Family
2.Species
3.Division
4. Class
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For wheat, which of the following combinations is correct?
1.Genus Triticum, family Poaceae, order Poales, Class Monocotyledonae
2.Genus Triticum, family Poaceae, order Poales, Class Dicotyledonae
3.Genus Triticum, family Poaceae, order Sapindales, Class Monocotyledonae
4.Genus Triticum, family Anacardiaceae, order Poales, Class Monocotyledonae
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In which the reproductive organs are hidden?
1. Cryptogamae
2.Phanerogamae
3. Gymnosperms
4.angiosperms
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Nicotiana sylvestris flowers only during long days while N.tabacum flowers only during short days. Under different photoperiods, they can be induced to flower at the same time and can be cross-fertilized to produce self-fertile offsprings. What is the best reason for considering Nicotiana sylvestris and N.tabacum as separate species?
1.They are reproductively distinct
2.They fail to interbreed in nature
3.They are physiologically different
4.They are distinct morphologically
Posted Date:-2021-03-06 08:20:03
The correct sequence of taxonomic categories is:
1.Species -> genus -> order -> phylum
2.Species -> order -> genus-> kingdom
3.Genus -> species -> order -> kingdom
4.None of these
Posted Date:-2021-03-06 08:20:03
The excretory system in annelids is consisted of tubes called?
1. flame cells
2. metanephridia
3.nephridia
4.protonephridia
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The international Code of Biological Nomenclature provides the scientific nomenclature for every organism that consists of the genus name and the species name of the organism. Can you guess who introduced this system of binomial nomenclature of the organisms?
1.Carolus Linnaeus
2.Robert Hooke
3.Robert Whittaker
4.Ernst Haeckel
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The mode of nutrition in fungi
1.only saprotrophic
2.saprotrophic or parasitic
3.only parasitic
4.none of above
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What does Arthropod means?
1.bonous legs
2.cartilaginous legs
3. largest legs
4.jointed legs
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What is not poisoning among these?
1.scorpion
2.centipede
3.spider
4.crab
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What is the exclusive marine phylum?
1.Echinodermata
2.Porifera
3.Cnidarians
4.Protozoa
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What is the mode of nutrition in bacteria?
1.autotrophic
2.heterotrophic
3. autotrophic and heterotrophic
4.none of these
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What is the phylum of Octopus?
1. Arthropoda
2.Mollusca
3.Annelida
4.cnidarian
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Which of the following statement is incorrect?
1.Aves are warm blooded, egg laying and have four four-chambered heart.
2.Aves have feather covered body, fore limbs are modified as wing and breathe through lungs.
3.Most of the mammals are viviparous.
4.Fishes, amphibians and reptiles are oviparous.
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Which of the these are found filamentous
1.Spirogyra
2. euglena
3.chlamydomonas
4.amoeba
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Which one of these categories has real existence?
1.Species
2.Genus
3.Kingdom
4.Phylum
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Which sub group in plant kingdom produces flowers?
1.Angiosperms
2.fungi
3.mosses
4.ferns
Posted Date:-2021-03-06 08:20:03