CBSE Class 11 (Science) Plant Kingdom — practice questions
85 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Science) Plant Kingdom in the app →Algae are divided into THREE main classes:AGAR — used for microbiology media and ice creams — is commercially obtained from:Pteridophytes that produce TWO KINDS of spores (macro and micro spores) are called:Identify the gymnosperm that has coralloid roots ASSOCIATED with N₂-fixing cyanobacteria.Gymnosperms are characterised byMonocots are distinguished from dicots by havingBryophytes are often called 'amphibians of the plant kingdom' becauseGymnosperms differ from angiosperms in that gymnosperms:The brown algae (Phaeophyceae) like Sargassum derive their colour from the pigment:Banana is classified as a:Monocot leaves typically have which type of leaf venation?AGAR, used in microbiology and food gelling, is extracted from:What percentage of India's ~17,500 angiosperm species are ENDEMIC (found only in India)?Which pigment makes red algae look red?What is the stored food of brown algae?Red algae store food as which substance, similar to amylopectin?Which class of algae is commonly called green algae?Brown algae belong to which class?Which xanthophyll pigment gives brown algae their shades of brown?Pyrenoids in green algae contain protein and what else?The rigid cell wall of green algae has an inner layer of what?Roughly how much of the carbon dioxide fixed on Earth is fixed by algae?Agar used to grow microbes comes from which algae?Algin, a commercial hydrocolloid, is produced by which algae?Which unicellular alga rich in protein is a food supplement for space travellers?Which are the most common asexual spores of algae?Which alga has non-flagellated gametes similar in size?Fusion of gametes of unequal size, as in Eudorina, is called what?Which pair of algae shows oogamous reproduction?How do algae usually reproduce vegetatively?Kelps, massive brown algae, may reach a height of how many metres?What is the leaf-like photosynthetic organ of a brown alga called?Zoospores of brown algae bear how many flagella, and of what kind?Where do most red algae live?What type of gametes do red algae form?Which alga listed is a member of Rhodophyceae?Which alga is placed in Phaeophyceae?Which group, once called blue green algae, is no longer counted as algae?Linnaeus' artificial system was based mainly on which structure?Who gave a natural classification for flowering plants?Which method assigns numbers and codes to all observable characters and processes them by computer?Classification using chromosome number, structure and behaviour is called what?Which approach uses the chemical constituents of plants to resolve confusions?Modern phylogenetic systems of classification are based on what?Why did artificial systems separate closely related species?The main body of a bryophyte is haploid and called what?Antherozoids of bryophytes are of which type?The archegonium of bryophytes produces how many eggs?What happens to the zygote of a bryophyte?How does a bryophyte sporophyte get its food?Which moss provides peat used as fuel?Which organisms are the first to colonise bare rocks?Which structures are absent in bryophytes?What are gemmae in liverworts?A liverwort sporophyte is differentiated into which parts?The first stage of a moss gametophyte, growing from a spore, is called what?From what does the leafy stage of a moss develop?Where are antheridia and archegonia borne in a moss?How does a moss sporophyte compare with that of a liverwort?Which two groups are pteridophytes?Which plants were the first terrestrial plants with xylem and phloem?What is the dominant phase in the life cycle of a fern?Small leaves, as in Selaginella, are called what?Which pair of pteridophytes forms strobili or cones?The free-living gametophyte of a pteridophyte is called what?Which genera are heterosporous?Plants that produce spores all of the same kind are called what?Retention of the embryo in the female gametophyte is a precursor to what?Equisetum belongs to which pteridophyte class?Dryopteris, Pteris and Adiantum are placed in which class?What do the Greek roots gymnos and sperma mean?Which gymnosperm is among the tallest tree species?Coralloid roots of Cycas are associated with which organisms?Which gymnosperm has roots with mycorrhiza?How do needle-like conifer leaves help the plant?The highly reduced male gametophyte of a gymnosperm is called what?Strobili bearing microsporophylls are called what?Which gymnosperm bears male and female cones on the same tree?A megaspore mother cell divides meiotically to form how many megaspores?In gymnosperms, what carries male gametes toward the archegonia?After fertilisation in a gymnosperm, what do the ovules become?Which gymnosperm has unbranched stems?In angiosperms, where are the seeds found?Angiosperms are divided into which two classes?Which group is no longer placed in Plantae?