WebJul 1, 2024 · Answer. Question. Generative cell was destroyed by laser but a normal pollen tube was still formed because. (a) vegetative cell is not damaged. (b) contents of killed generative cell stimulate pollen growth. (c) laser beam stimulates growth of pollen tube. (d) the region of emergence of pollen tube is not harmed. WebPollination is the transference of pollen grain from the anthers of a flower to the stigma of the same or another flower, mediated by abiotic or biotic means. Abiotic means the pollen is not carried by organisms but through means such as wind or water. Biotic pollination occurs through agents like animals, insects or birds.
Biology MCQs for Class 12 with Answers Chapter 2 Sexual
WebMar 26, 2024 · Class 12 Notes For Sexual Reproduction in Flowering Plants. Reproduction ensures continuity of species generation after generations as the older individuals undergo senescence and die. … WebDec 6, 2024 · 4.Biotic agents of pollination are insects, animals, etc. (i)Insect pollinated flowers are generally large, colourful, fragrant and rich in nectar. (ii)The pollen grains and stigmatic surface are sticky. (iii)The animal pollinated flowers offer certain rewards to the pollinators. Some of them are: eastern michigan football alumni
Structure of anther and microsporangium (article) Khan Academy
WebJun 17, 2016 · The filament is a slender, threadlike object, which functions by supporting the anther. Pistil: This is the innermost part and the female reproductive organ of a flower … Pollination is a method where pollen grains are picked from an anther, which is the … Specific general characteristics of algae are common to plants as well as animals. … Vertebrates are the animals that possess a vertebrate and/or a notochord at any … NCERT Solutions Class 12 Macro-Economics; NCERT Solutions For Class … NCERT Solutions Class 12 Commerce; NCERT Solutions Class 12 Macro … WebFloral diagram portrays the cross-sectional view of the flower bud, and provides the easiest way to study the number, position, arrangement of all the floral whorls, and other floral … WebMar 29, 2024 · Class 12 Class 12 Maths; Class 12 English; Class 12 Economics; Class 12 Accountancy; Class 12 Physics; Class 12 Chemistry; Class 12 Biology ... The given diagram represent the structure of a flower. Study the structure and answer any four questions from (a) to (e). (a) The labels A, B and C are cuh pathology lab