Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
q what are the gynoecium and the androecium what are the other structures of flowersandroecium is set of male reproductive structures of flowers it
q what are the major morphological differences between monocot plants and dicot plantsthe main separation criteria between monocots and dicots are
q what are the two major groups into which flowering plants are dividedangiosperm plants are separated into monocotyledonous monocots and
q what are the angiosperms the flowering plants what is the major feature that distinguishes them from the gymnospermsflowering plants have seeds and
q how is the gymnosperm seeds formed what are the ploidies of the structures that compose the seedstheir seeds are produced from differentiation of
q how do zygote and fecundation formation occur in these plants do these processes depend on waterthe microsporangia in the male strobile rupture at
q how are the female gametes of gymnosperms formed what is the relationship between this process and the concept of alternation of generationsin the
q how are the male gametes of gymnosperms formed what is the relationship between the pollen grains and the concept of alternation of generationsin
q what do you mean by pollenpollen grains are the male gametophytes of the phanerogamic flowering plants so within the pollen grains the male gametes
q what is the life cycle of the gymnospermsas all plants they present a diplobiontic life cycle that is alternation of generations with haploid and
q in which areas of the globe is gymnosperm abundance noteworthythese plants are the typical vegetation of cold regions like the boreal forest or
q what is the evolutionary importance of the emergence of seeds in the plant kingdomthe evolutionary significance of the seed is related to the plant
q how different are gymnosperms from pteridophytes and bryophytesgymnosperms are not cryptogamic as pteridophytes and bryophytes are they are
q what are the major divisions and representing species of the gymnospermsthis group of plants can be separated into conifers pine sequoia cypress
q what is xaximmost pteridophytes have subterraneous stems similar to the substrate called as rhizomes xaxim is a kind of pteridophyte with an aerial
q what is the lasting form in the gametophyte pteridophytes or the sporophyte how can it be compared to bryophytesthe lasting form in pteridophytes
q how are gametes formed in the pteridophyte life cycle by mitosis or meiosis what is the type of meiosis that occurs in pteridophytesin
subphylum vertebrata 41700 species the vertebratesvertebral column of bone or cartilage head is well developed heart is ventrally situated
subphylum urochordata 13000 species sea squirtsnotocord is dorally situated nerve tube dorsally situated and is hollow chordate characteristics seen
subphylum mandibulatamost of them have three pairs of walking legs mandibles compound eyes antennas some with wings there are four classescrustacea -
subphylum cheliceratasix pairs of appendages four pairs being legs with paired chelicerae fangs there are three classes in this
phylum arthropoda 800000 to 1000000 speciesthey are known as jointed footed animals the appendages are paired and jointed with chitinous exoskeleton
phylum mollusca 47000 speciesthe segmentation and coelom may not exist diversification through modifications of head foot mantle and radula for
phylum platyhelminthes 13000 species flatwormthe body is flattened gastrovascular cavity is branched dense bodies with many cell layers mouth but no
phylum coelentrata 9000 speciesthe body is radial and made up of two cell layers gastro-vascular cavity is saclike tentacles and stinging cells are