Q1. Which class of algae has cell walls made of cellulose and pectic substances?A. ChlorophyceaeB. PhaeophyceaeC. RhodophyceaeD. Xanthophyceae
Q2. Which feature differentiates liverworts from mosses?A. Presence of rhizoidsB. Dominant gametophyte stageC. Gemma cup formationD. Sporophyte dependency
Q3. Which classification system assigns numbers and codes to all characters for analysis?A. Artificial classificationB. Natural classificationC. Numerical taxonomyD. Phylogenetic classification
Q4. Which of the following statements about Phaeophyceae is incorrect?A. Phaeophyceae include profusely branched forms like kelps.B. Their cell walls are covered with a gelatinous algin layer.C. Phaeophyceae are exclusively freshwater algae.D. Examples include Ectocarpus and Sargassum.
Q5. Which of the following statements about mosses is incorrect?A. The protonema in mosses is a creeping, branched structure.B. Mosses have a sporophyte differentiated into foot, seta, and capsule.C. The leafy stage in mosses is haploid and bears sex organs.D. Mosses reproduce sexually by fusion of non-motile antherozoids.
Q6. Which of the following statements about Phaeophyceae is correct?A. Phaeophyceae lack chlorophyll and rely solely on fucoxanthin.B. Their sexual reproduction can be isogamous, anisogamous, or oogamous.C. Phaeophyceae store food as floridean starch.D. They are unicellular algae found in freshwater only.
Q7. Which of the following statements about algae is correct?A. Algae are of no economic importance to humans.B. Certain algae like Chlorella are used as food supplements.C. Algae decrease dissolved oxygen levels in their environment.D. All algae form massive plant bodies like kelps.
Q8. Which of the following statements about liverworts is incorrect?A. Liverworts grow on marshy ground and tree bark.B. Their thallus is dorsiventral and closely appressed to the substrate.C. Liverworts have true leaves like pteridophytes.D. Examples include Marchantia with a thalloid body.
Q9. Which of the following statements about bryophytes is correct?A. Bryophytes have a dominant sporophyte attached to the gametophyte.B. The antherozoids in bryophytes are biflagellate.C. Bryophytes possess well-differentiated vascular tissues.D. The gametophyte in bryophytes is diploid.
Q10. Which type of reproduction in algae involves the release of biflagellate zoospores?A. Vegetative reproductionB. Asexual reproductionC. Isogamous reproductionD. Oogamous reproduction