-Phloem contains sieve cells and phloem parenchyma and companion cells are absent (except in Gnetum; Ephedra and Weluhtschia). are rich io K, P, trace elements and growth substances and are used as fertilisers by coastal people. (iii)Liverworts and moss The gametophytic phase is represented either by gametes only, that are formed through meiosis or by a highly reduced few celled gametophyte. (iii)Algae are useful source of many commercial products like agar, a jelly like substance (complex polysaccharide) is extracted form species of red algae belonging to the genera Gelidium, Gracilaria etc. Practice Now. 7.What is heterospory? 80 Questions with Answers and Explanations on “Plant Kingdom” for Botany Students. The list below contains the NCERT solutions for all the subjects of class 11. The egg is produced by the archegonia. Plant Kingdom class XI Biology NCERT book, refresher books and other reference books have many important questions. Many haploid spores are produced as a result of the reduction division taking place inside the capsule. (ii)Antheridium : The male sex organ of cryptogams (algae, fungi, bryophytes and – The leaves may be simple or compound. Carrageenan is used as an emulsifier in chocolates, paints, and toothpastes. Reply Delete. NEET Entrance questions with answers. Question from very important topics are covered by NCERT Exemplar Class 11.You also get idea about the type of questions and method to answer in your Class 11th examination. (b)Cycas                                                             (ii)Pteridophyte Life cycle of a bryophyte is as follows : The main plant body of bryophyte is gametophytic (n), which is independent and may be thallose (no differentiation in root, stem, leaves) e.g., Riccia, or may be foliose (having leafy axis) e.g., Funaria. Getting to Know Plants Class 6 MCQs Questions with Answers. . 1.What is the basis of classification of algae? These gametes fuse to form a zygote. Email This BlogThis! outer fleshy, middle stony and inner fleshy. (iv)Syngamy and triple fusion. Your answers are highlighted below. (iii)Heterospory is the basis of development of seed habit in higher plants. Soln. Plant Questions and Answers (Q&A) Follow . Archegonium is with reduced neck (with no neck canal cell). Cell wall composition — Cellulose and algin In ferns, the sporophylls are the normal foliage leaves, but in other plants the sporophylls are modified and arise in specialised structure such as the strobili of club-moss, gymnosperms and the flower of angiosperms. Liverwort — In liverworts, the main plant-body is haploid (gametophytic). NCERT Solutions for Class 11 Biology Chapter 3 – Plant Kingdom. The zygote develops into a sporophyte. Practicing NCERT Online Biology MCQ Questions for Class 11 with Answers is one of the best ways to prepare for the CBSE Class 11 exam. Check the below NCERT MCQ Questions for Class 7 Science Chapter 11 Transportation in Animals and Plants with Answers Pdf free download. Many species of Ephedra produce ephedrine, which can be used in the treatment of asthma and bronchitis. Courses. Reproduction in Plants Class 7 MCQs Questions with Answers. Explain. 8527521718; Online Support; Menu. Each sporangium has spore mother cells which undergo meiosis to produce haploid spores. The sandy soils of desert support _____ . Sunken stomata are present. 5.Write a note on economic importance of algae and gymnosperms. Reply . Differences between monocots and dicots are as follows : NCERT Solutions Class 11 Business Studies, NCERT Solutions Class 11 Entrepreneurship, NCERT Solutions Class 11 Indian Economic Development, NCERT Solutions Class 11 Computer Science, NCERT Solutions for Class 10 Science Chapter 1, NCERT Solutions for Class 10 Science Chapter 2, Periodic Classification of Elements Class 10, NCERT Solutions for Class 10 Science Chapter 7, NCERT Solutions for Class 10 Science Chapter 8, NCERT Solutions for Class 10 Science Chapter 9, NCERT Solutions for Class 10 Science Chapter 10, NCERT Solutions for Class 10 Science Chapter 11, NCERT Solutions for Class 10 Science Chapter 12, NCERT Solutions for Class 10 Science Chapter 13, NCERT Solutions for Class 10 Science Chapter 14, NCERT Solutions for Class 10 Science Chapter 15, NCERT Solutions for Class 10 Science Chapter 16, CBSE Previous Year Question Papers Class 12, CBSE Previous Year Question Papers Class 10, Plant Life Cycles and Alternation of Generations. The zygote forms an embryo, which in turn develops into a new sporophyte. The sporophyte is differentiated into the foot, seta, and capsule. Pollen grains of some Cycas plants are reported to have some narcotic effect. The antheridia produce sperms that swim in water to reach the archegonia. Significance of heterospory There is no substitute for consistent practice whether one wants to understand a concept thoroughly or one wants to score better. (iv) The differences between syngamy and triple fusion are as follows : 10.How would you distinguish monocots from dicots? (i) Heterospory is associated with the sexual differentiation of gametophyte /.