Answer: (d) Cannabis. a) grass b) Vallisneria c) hydrilla d) lotus Answer: a) grass. The compound pollen grain, massula is characteristic of _____. 4. Very short answer type : Androgenic plants.do not flower. Solution: 1. Saying ‘ Yes, I do. Spiny or sticky pollen grains and large, attractively coloured flowers are associated with (a) hydrophily (b) entomophily (c) ornithophily (d) anemophily Answer: (b) entomophily. Question 7. Answer: Pollen grains are the male gametes which fertilise the egg cell present in the ovule of a flower. Balbharati solutions for Biology 12th Standard HSC Maharashtra State Board chapter 1 (Reproduction in Lower and Higher Plants) include all questions with solution and detail explanation. 2. D. None of these. Answer: Various methods of cross-pollination are entomophily (insect pollination), anemophily (wind pollination), hydrophily (water pollination) and zoophily (animal pollination). View Answer. Describe the structure of a myelinated3. 1. Write the various methods of cross-pollination. (2) Biotic agencies (i) Entomophily - By the insects. In India, one tonne (1.1 short tons) of dried water hyacinth yields about 50 liters ethanol and 200 kg residual fiber (7,700 Btu). You will also love the experience on ybstudy class 12 Solutions. (This is either an auxiliary verb or a form of ‘ be ’.). (ii) Orhithophily - By the birds. Answer: Dispersal of seeds. Fill in the blanks: Question 1. / No, I don ’ t ’ in English is more polite than just saying ‘ Yes. View Answer. All biology textbook Solutions. SHORT/LONG ANSWER TYPE QUESTIONS1. The ashes are used as fertilizer. To form the short answer, you use the first word from the question. List the differences between a striated, smooth, and cardiacQ. Genetically uniform parental type seedlings are obtained from nucellar embryos, thus nucellar adventive polyembryony is … Answer : Tapetum is the innermost layer of the microsporangium. b) hydrophily c) entamophily d) ornithophily Answer: (a) anemophily. Wha … t is a nerve fibre? One male gametes fuses with egg (syngamy) to form zygote. A hydrophilic molecule or substance is attracted to water. Hydrophilic definition, having a strong affinity for water. C. Entomophily. Endospermic seeds are found in (a) castor (b) barley (c) coconut (d) all of these Answer: (d) all of these. This will clear students doubts about any question and improve application skills while preparing for board exams. Very Short Answer Type Questions (1-Mark) Q. Ans. Pollination takes place by wind in _____. Clay and humic acid particles hold tightly. Spreading of seeds from one place to another is known as _____. ’ That ’ s why short answers are very commonly used. / No. 1. 5. (iii) Chiropterophily - By the bats. Question 12. II. B. Anemophily. Answer : Hydrophily is the term given to the pollination occured by water.It can occur below the surface of water or on the surface of water. Hydrophilic Definition. Exercises on Short Answers. See more. All questions and answers from the biology textbook Solutions Book of Class 12 biology Chapter 1 are provided here for you for free. Short Answer Question: How polyembryony can be commercially exploited? Polyembryony increases the chances of survival of the new plants. Water is a polar molecule that acts as a solvent, dissolving other polar and hydrophilic substances.In biology, many substances are hydrophilic, which allows them to be dispersed throughout a cell or organism.All cells use water as a solvent that creates the solution known as cytosol. Question 11. Question 10. Name the layer which supplies nourishment to the developing pollen grains. View Answer. What is hydrophily ? Use the long form (he does) in affirmative answers (yes). 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