Diversity in Living World
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See all →- Which one of the following is the characteristic feature of gymnosperms? Answer: 2. Seeds are naked. Key idea: Gymnos means naked. In gymnosperms the ovules are not enclosed in an ovary, so the seeds are naked. Fr... 1
- Match List I with List II.List I: A. Pteridophyte B. Bryophyte C. Angiosperm D. GymnospermList II: I. Salvia II. Ginkgo III. Polytrichum IV. SalviniaChoose the option with all correct matches. Answer: 2. A-IV, B-III, C-I, D-II Key idea: Identify each plant group. Pteridophyte: Salvinia (A-IV). Bryophyte: Polytrichum, a moss (B-III)... 1
- In bryophytes, the gemmae help in which one of the following? Answer: 2. Asexual reproduction Key idea: Gemmae are green multicellular buds in cups on the thallus of liverworts such as Marchantia. They... 1
- Each of the following characteristics represent a Kingdom proposed by Whittaker. Arrange the following in increasing order of complexity of body organization.A. Multicellular heterotrophs with cell wall made of chitin.B. Heterotrophs with tissue/orga… Answer: 2. C, E, A, D, B Key idea: Order by increasing body complexity across Whittaker's kingdoms. C: Monera, prokaryotes E: Protista, euka... 1
- The correct sequence of events in the life cycle of bryophytes isA. Fusion of antherozoid with egg.B. Attachment of gametophyte to substratum.C. Reduction division to produce haploid spores.D. Formation of sporophyte.E. Release of antherozoids into w… Answer: 3. B, E, A, D, C Key idea: In bryophytes, the gametophyte is dominant and the sporophyte depends on it. B: gametophyte attaches to t... 1
- Given below are the stages in the life cycle of pteridophytes. Arrange the following stages in the correct sequence.A. Prothallus stageB. Meiosis in spore mother cellsC. FertilisationD. Formation of archegonia and antheridia in gametophyte.E. Transfe… Answer: 1. B, A, D, E, C Key idea: In pteridophytes the dominant sporophyte makes spores by meiosis, which grow into the gametophyte. B: mei... 1