Which of the following statements to true of the pine life cycle? Cones are homologous to the capsules of moss plants The pine tree is gametophyte Male and female gametophytes are in close proximity during gamete synthesis Conifer pollen grains contain male gametophytes Double fertilization is a relatively common phenomenal Which structure is common to both gymnosperms and angiosperms stigma carpel ovule ovary anthers What It true of stamens, sepals. Petals, carpels and pinecone scales? They are female reproductive parts None are capable of photosynthesis They are modified leaves They are found on flowers They are found on angiosperms Which of the following it a characteristic of all angiosperms? complete reliance on wind at the pollinating agent double internal fertilization free-living gametophyte carpel v that contain microstporangia ovules that arc not contained within ovaries Which of the following Statements n true of monocots? They are currently thought to be polyphyletic The veins of their leaves form a netlike pattern They, along with the eudicots magnoluds. and basal angiosperms are currently placed n phylum Anthophyta Each possesses multiple cotyledons They are in the clade that includes most of our crops. except the cereal graims
23). c. Ovule.
Both gymnosperms and angiosperms contain ovule.
Gymnosperms were the first seed
plants they produce two kinds of gametophytes. Male gametophytes
are called pollen grains and female gametophyte is called ovum.
Pollen is transferred to an ovule by wind, insects and other
agents, thus fertilization occurs. This wind pollination of
gymnosperms is inherently inefficient and led to the evolution of
Angiosperms are the flowering
plants, in which the ovule is completely enclosed by sporophyte
tissue. Flowers are the reproductive organs of the angiosperms, the
attractive colours and shape of the flowers induce insects and
other animals to carry the pollen. Parts of the flower develop into
the seed and the fruit after fertilization.