Life Cycle Of Bryophytes
A group of plant species that utilize spores, instead of flowers or seeds, for reproduction is known as a bryophyte. The non-vascular seedless plants which include mosses, liverworts, and hornworts are classified as bryophytes. There are over 20,000 species of mosses, with some species being microscopic and others reaching heights of over one meter.
Plant Biometry
Biometry is the science that deals with the statistical investigation of biological observations and phenomena. It is very important in the development of sound and effective agricultural research practices. It is a Greek-derived word wherein 'bio' means life and 'metrics' means 'to measure'. Thus, it is generally defined as the combination of statistics and science. Water Weldon introduced this term. This method is applied in several fields of science, including botany, health, social and physical sciences, and humanities.
Life Cycle Of Gymnosperms
Gymnosperms, which translates to "naked seeds," are a diverse group of seed plants. The angiosperms are a sister group to one group of gymnosperms (the Gnetales), making the gymnosperms a paraphyletic group, according to the "anthophyte" hypothesis. The term "paraphyletic group" refers to a group that does not include all descendants of a single common ancestor. The "netifer" theory, on the other hand, indicates that Gnetophytes are sister to conifers, making gymnosperms monophyletic and sister to angiosperms. Further, molecular and anatomical research may shed light on these connections.
Life Cycle Of Pteridophytes
They are the first land plants with vascular tissues (xylem and phloem). These vascular plants are classified as vascular cryptogams because they do not contain flowers or seeds. These plants are the most common and visible group of land plants, accounting for more than 90% of all vegetation on the planet.
Life Cycle Of Angiosperms
An angiosperm is a word obtained from the two Greek words angio, which refers to "covered," and sperms, which means "bean". Flowering plants are what the angiosperms are called. The flowers of a plant develop into fruits, which contain seeds.
Draw what the original root and lateral root would look like
when viewed from the side, labeling both roots.
Introduction
Root: are the organ of plants which usually lies below the ground. They help in absorption of water and nutrient from the soil. Additionally, they provide mechanical support to the plant. They contain meristematic tissue which helps in the elongation and differentiation of cells thus helps in root growth. Roots emerge from the radicle.
Two types of roots are present in plants viz. Tap root and Adventitious roots.
Also, there is main root and lateral root.
Lateral root: they increase the surface area of primary roots thus helps in more absorption of water and nutrients. They emerge from the pericycle region of the root which is part of meristematic tissue. In some species they form symbiotic association with Rhizobia.
Auxin hormone and PIN proteins helps in formation of lateral roots. Auxin helps in cell elongation via PIN proteins. Lateral roots are formed due to secondary growth in the primary root.
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