Mixed Questions on Angiosperms I

Double fertilization

Self-Pollination

Anemophily

<p>Pollination syndrome</p> Signup and view all the answers

<p>Three nuclei within the pollen tube</p> Signup and view all the answers

<p>Zoophily</p> Signup and view all the answers

<p><em>Anemophilous</em></p> Signup and view all the answers

<p>To protect the flower bud</p> Signup and view all the answers

<p>Calyx</p> Signup and view all the answers

<p>To attract pollinators</p> Signup and view all the answers

<p>Stamen</p> Signup and view all the answers

<p>Androecium</p> Signup and view all the answers

<p>To receive pollen grains</p> Signup and view all the answers

<p>Ovary</p> Signup and view all the answers

<p>Umbel</p> Signup and view all the answers

<p>Taxonomy classification</p> Signup and view all the answers

<p>Polar nuclei</p> Signup and view all the answers

<p>Two</p> Signup and view all the answers

<p>Intine</p> Signup and view all the answers

<p>Positioned at the 'inner' end</p> Signup and view all the answers

<p>Microspore nucleus</p> Signup and view all the answers

<p>Sporopollenin</p> Signup and view all the answers

<p>'Mycropylar' end</p> Signup and view all the answers

<p>Three times</p> Signup and view all the answers

<p>Polar nuclei</p> Signup and view all the answers

<p>To protect the immature flower</p> Signup and view all the answers

<p>To attract pollinators</p> Signup and view all the answers

<p>Gynoecium</p> Signup and view all the answers

<p>An inflorescence is a cluster of flowers, while a solitary flower is a single flower</p> Signup and view all the answers

<p>Androecium and Gynoecium</p> Signup and view all the answers

<p>To produce pollen</p> Signup and view all the answers

<p>To attract pollinators</p> Signup and view all the answers

<p>A leafy appendage at the base of the stalk</p> Signup and view all the answers

<p>The expanded terminal end of the flower stalk</p> Signup and view all the answers

<p>The male reproductive whorl</p> Signup and view all the answers

<p>The APG III system helps establish a consensus on the taxonomy of flowering plants using recent knowledge from phylogenetic studies.</p> Signup and view all the answers

<p>Double fertilization involves the fusion of one sperm with the egg cell and the other sperm with the polar nuclei, resulting in the formation of endosperm in the seed.</p> Signup and view all the answers

<p>Xylem in angiosperms contains vessel elements, fibers, and tracheids.</p> Signup and view all the answers

<p>Phloem in angiosperms consists of companion cells and sieve tubes.</p> Signup and view all the answers

<p>Endosperm in a seed serves as a triploid nutritive tissue.</p> Signup and view all the answers

<p>The megaspore mother cell undergoes meiosis to produce four megaspores, one of which develops into the megagametophyte through mitosis.</p> Signup and view all the answers

<p>In angiosperms, the gametophyte is reduced and dependent on the sporophyte, continuing the life cycle trend.</p> Signup and view all the answers

<p>Ovules in the ovary develop into seeds after fertilization.</p> Signup and view all the answers

<p>Angiosperms have co-evolved with animals for pollination, leading to diverse forms and specialized structures.</p> Signup and view all the answers

<p>In the angiosperm life cycle, the gametophyte generation is further reduced compared to other plant groups.</p> Signup and view all the answers

<p>One sperm fertilizes the egg to form the zygote, while the other sperm fuses with the polar nuclei to form the triploid endosperm cell.</p> Signup and view all the answers

<p>Self-pollination occurs within the same flower or between flowers on the same plant, while cross-pollination happens between the anther of one plant and the stigma of another plant of the same species.</p> Signup and view all the answers

<p>The two types of biotic agents are animals and insects.</p> Signup and view all the answers

<p>Anemophily is pollination by wind, while hydrophily is pollination by water.</p> Signup and view all the answers

<p>Sporopollenin</p> Signup and view all the answers

<p>Three times</p> Signup and view all the answers

<p>Pollination syndromes or systems are specialized adaptations of flowers for specific pollinator types.</p> Signup and view all the answers

<p>Endosperm provides nutrients for the developing embryo in angiosperm seeds.</p> Signup and view all the answers

<p>Two synergids and the female gamete (egg)</p> Signup and view all the answers

<p>Sperm</p> Signup and view all the answers

<p>Wind-pollinated plants rely on wind for pollination, while insect-pollinated plants attract insects for pollination.</p> Signup and view all the answers

<p>Positioned at 'inner' end</p> Signup and view all the answers

<p>Floral morphology is directly related to the type of pollinator a flower attracts.</p> Signup and view all the answers

<p>Plants can be either specialists or generalists in their adaptation to a particular pollinator.</p> Signup and view all the answers

<p>Polar nuclei</p> Signup and view all the answers

<p>The two types are birds and insects.</p> Signup and view all the answers

<p>Forms the wall of the pollen tube</p> Signup and view all the answers

<p>Egg</p> Signup and view all the answers

<p>Double fertilization</p> Signup and view all the answers

<p>Mitosis</p> Signup and view all the answers

<p>The androecium is the male reproductive part of a flower, consisting of stamens that produce pollen.</p> Signup and view all the answers

<p>The calyx is the outermost layer of a flower, composed of sepals that protect the immature flower and later open to reveal the mature flower.</p> Signup and view all the answers

<p>The corolla consists of petals that attract pollinators and come in various forms to aid in pollination.</p> Signup and view all the answers

<p>The carpel is the female reproductive organ in a flower, responsible for producing eggs and containing the ovules.</p> Signup and view all the answers

<p>Double fertilization in angiosperms involves one sperm fertilizing the egg to form the embryo and the other sperm uniting with the polar nuclei to form endosperm, providing nourishment to the developing embryo.</p> Signup and view all the answers

<p>Endosperm in angiosperm seeds serves as a source of nourishment for the developing embryo.</p> Signup and view all the answers

<p>Xylem transports water and minerals from the roots to the rest of the plant, while phloem transports sugars produced during photosynthesis to different parts of the plant.</p> Signup and view all the answers

<p>The APG III system is a modern classification system for flowering plants based on genetic relationships, providing a more accurate understanding of plant evolution and relationships.</p> Signup and view all the answers

<p>The life cycle of an angiosperm involves double fertilization, where one sperm fertilizes the egg and the other combines with the polar nuclei to form endosperm. This unique process sets angiosperms apart from other plant groups.</p> Signup and view all the answers

<p>The receptacle is the expanded, terminal end of a flower stalk where floral parts arise. It provides support for the flower's reproductive structures.</p> Signup and view all the answers