NAT II Biological Science With Answers

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NAT II Biological Science

Sr. # Questions Answers Choice
1 Vegetative parts of --------- are easier to observe than reproductive parts Angiosperms Gymnosperms Bryophytes Pteridophytes
2 The criteria of the classification are the ----------- on which the classification is based. Groups Divisions Characters Orders
3 Fungi cause certain animal diseases. How Ringworm and athlete's foot are caused by fungi Imperfect fungi Aspergillus fumigatus Purple ergot Soil contaminated with bird's feces
4 Fungi are used in food industry, which fungi is used in bakery for flavor, aroma, color to some cheese Yeast Penicillium Aspergillus Neurospora
5 Many fungi are the sources of drugs, which drug is used to lower the blood cholesterol level Griseofulvin Cyclosporine Lovastatin Ergotin
6 Why molds can grow on oranges and jelly kept in refrigerator where generally bacteria cannot reach They are well adapted to live on land Hyphae are modified They can tolerate temperature extremes minus 5 degree centigrade below freezing and 50 degree centigrade or more They have rhizoids
7 Parasexuality is a special type of genetic recombination which is showed by which group of fungi Penicillium Imperfect fungi Powdery mildews Spitting fungus
8 Rusts belong to the group of club fungi they are called so because Orange-yellow colored disease spots on their host surface Dusty spore masses that resemble soot Rust have fruiting bodies Puccinia species
9 Saccharomyces cervisiae is the most commonly exploited yeast which feature highlights their economic improtance Asexual reproduction Unicellular They ferment carbohydrate to ethanol and carbon dioxide Sexual reproduction
10 In Zygomycota during sexual reproduction, zygota formed directly by the fusion of hyphae forms temporary, dormant, thick walled resistant structure called as Ascospores Zygospores Asci Ascocarps
11 A fungal hyphae having 2 nuclei of different genetic type is called as Karyogamy Plasmogamy Hetrokaryotic Fragmentation
12 Mushroom belongs to group of club fungi and has septate, length dikaryotic phase, which is the main phylum to which it belongs Zygomycota Basidiomycota Deuteromycota Ascomycots
13 Fungi are classified in a number of groups which is one of the following groups that does not show sexual reproduction Zygomycota Ascomycota Basidiomycota Deuteromycota
14 In fungi asexual reproduction occurs by all these method except which one Spores Conidia Binary fission Budding
15 What are the important features that fungi have which help them in their survival on land? Tolerate wide range of pH Tolerate temperature Tolerate high osmotic pressure All of the above
16 A symbiotic association between certain fungi and certain photoautotrophes either green algae or a cyanobacterium or sometimes both is termed as Mycorrhizae Lichens Endomycorrhizae Ectomycorrhizae
17 Which one of these is a predatory fungus? Pleurotus ostreatus Mildews Armillaria Yeast
18 Parasitic fungi absorb nutrients directly from the living host cytoplasm with the help of hyphal tips called as Rhizoids Constricting ring Haustoria Hyphae
19 What are the major decomposers of the biosphere contributing to the recycling of the elements used by living things? Saprobic fungi and bacteria Plants Animals Algae
20 All fungi lack chlorophyll and on the basis of their mode of nutrition, they include all these groups except Absorptive heterotrphs Saprotrophs Decomposers Autotrophs
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