BIOLOGY [2 Mark Question Answer]

Dicots have flower parts in multiples of fours or fives like the five-petaled dicot flower pictured to the right.

Ferns are plants that do not have flowers. Ferns generally reproduce by producing spores. Similar to flowering plants, ferns have roots, stems and leaves.

They are small flowerless plants that grow in dense clumps or mats, generally in damp or shady places. Each plant is usually made up of a simple, one-cell-thick leaf attached to a stem. Gametophytes is the term used for the low, leaf-like form of moss and sporophytes the tall, stalk-like forms.

Algae are photosynthetic organisms. Algae can be either unicellular or multicellular organisms. Algae lack a well-defined body, so, structures like roots, stems or leaves are absent. Algaes are found where there is adequate moisture. Reproduction in algae occurs in both asexual and sexual forms.

Like gymnosperms, angiosperms are seed-producing plants. They are distinguished from gymnosperms by characteristics including flowers, endosperm within their seeds, and the production of fruits that contain the seeds.

They are naked, found in colder regions where snowfall occurs, develop needle-like leaves. They are perennial or woody, forming trees or bushes.

They are seedless. They are multicellular. They reproduce through spores. They are independent and free-living organisms. They have a well-differentiated plant body into root, stem and leaves.

The plant body is thallus like, i.e. prostrate or erect. It is attached to the substratum by rhizoids, which are unicellular or multicellular. They lack true vegetative structure and have a root-like, stem-like and leaf-like structure. Plants lack the vascular system.

Algae are eukaryotic organisms that have no roots, stems, or leaves but do have chlorophyll and other pigments for carrying out photosynthesis. Algae can be multicellular or unicellular. Unicellular algae occur most frequently in water, especially in plankton.

The monocots consist of one seed leaf, which is called the cotyledon, while the dicots are made up of two embryonic leaves. In fact, the names of the classes are based on the seed leaf it produces, which is Monocotyledonae or one cotyledon and Dicotyledonae or two cotyledons.

difference between angiosperms and gymnosperms is how their seeds are developed. The seeds of angiosperms develop in the ovaries of flowers and are surrounded by a protective fruit. Gymnosperm seeds are usually formed in unisexual cones, known as strobili, and the plants lack fruits and flowers.

Bryophytes: Bryophytes are embryophytes that do not possess a true vascular tissue.
Pteridophytes: Pteridophytes are vascular plants that reproduce via spores.