Significance of heterospory - Gametophyte development in heterosporous forms is endosporic wherein sporophyte supplies the nutrition for... View Article
In some pteridophytes, the stelar structure is more complex. It comprises two or more concentric rings or vascular tissues and is known as... View Article
Protostele is a non-medullated stele comprising a central core of xylem engirdled by a cluster of phloem. There is a multiple of a single layer... View Article
Large sporangium was seen in primitive fossils pteridophytes. Even in primitive ferns, sporangia are large. However, in advanced forms, reduced... View Article
Sorus is a group of sporangia produced on the adaxial/abaxial surface of the sporophylls in ferns. Based on the pattern of maturation of... View Article
Sorus is a group of sporangia produced on the adaxial/abaxial surface of the sporophylls in ferns. Sporangia sometimes can be either scattered... View Article
It is an abnormality seen in the life cycle of pteridophytes. On several occasions, it is seen that chromosome number is impaired in ferns by the... View Article
It is an abnormality seen in the life cycle of pteridophytes. Sometimes, the regular alternation of chromosome numbers is impaired by the... View Article
Yes, alternation of generation is a survival strategy wherein the plant alternates between different reproductive techniques. Through meiosis,... View Article
Fertilization occurs with the help of water. Cap cells of antheridia are pushed down releasing antherozoids when a film of water flows between... View Article
The zygote develops into an embryo soon after fertilization which differentiates into the seta, foot and sporangium. The foot seeps through the... View Article
A few mosses have a layer of cells known as leptoids. It resembles the sieve cells of vascular plants. Leptoids engirdle the hydroids, they are... View Article
Marchantia reproduces asexually in two ways - By small clumps of tissues known as gemmae. These are produced in small gemmae cups forming on... View Article
The tip of the capsule, when mature, splits into two valves thus releasing spores. Just above the foot, a meristematic region adds new cells to... View Article
Cuticle and stomata appear first in Bryophytes. These new attributes can work as they do in most of the plants today which is to decrease the... View Article
Cuticle and stomata appear first in Bryophytes. These new traits became vital adaptations to survive on land and essentially plants possess them.... View Article
One of the most significant transformations of early bryophytes were multicellular sporophytes. There are two steps that are responsible for this... View Article
These are the five characteristics of Anthocerotopsida - Presence of smooth rhizoids The thallus in them has a uniform internal organization... View Article
These are the five characteristics of Hepaticopsida - Their plant body is foliose or thalloid, lobed, prostate, dichotomously branched.... View Article
Yes. Chlorine is an essential micronutrient required by all plants in small quantities. In plants, chlorine participates in several physiological... View Article
