Which statement is wrong for Krebs’ cycle?
A) During the conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesised. B) There is one... View Article
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What Are Photoautotrophs?
Organisms who can manufacture organic compounds from inorganic raw materials in the presence of solar energy and photosynthetic pigments are... View Article
Name One Entity Which Exhibits Elater Mechanism For Spore Dispersal.
Marchantia is a liverwort in which the sex structures are borne on disc shaped lobed receptacles borne at the tip... View Article
Write One Feature Differentiating Algae From Bryophytes.
Bryophytes can be separated from algae, because they possess archegonia. Both of them are autotrophic and lack vascular tissues. Rhizoids... View Article
Why Is The Walking Fern Named So?
The walking fern is named so because they propagate vegetatively by their leaf tips. When their leaf tip is in... View Article
What Is Forked Branching?
Dichotomous branching is a characteristic feature of liverworts examples – Pellia, Riccia, Marchantia, etc. which is a primitive form of... View Article
Write About Bryophytes.
Bryophytes are green photosynthetic and thalloid structures. The plant body exhibits root, stem and leaves. Rhizoids are seen instead of... View Article
Write About The Phases In Bryophytes.
Bryophytes comprise a small sporophyte phase and are generally parasitic on gametophyte. The main plant body is gametophytic which is... View Article
When Does Meiosis Occur In Ferns?
Meiosis in ferns occurs at the time of spore formation. The plant body of ferns is sporophytic (2n), differentiated into... View Article
Why Is Cycas Not Included In Angiosperms Even Though It Has Two Cotyledons?
Cycas has two cotyledons but is not included in angiosperms because of naked ovules. Cycas belongs to Order Cycadales of... View Article
Why Do Mosses Need To Be Close To A Water Source?
Mosses (primitive bryophytes) are small and lack a tubular vascular system. They are non-vascular plants and hence must absorb water.... View Article
As Per Eichler, What Are The Two Sub-kingdoms Of The Plant Kingdom?
Eichler divided the plant kingdom into two sub kingdoms – Cryptogamae and Phanerogamae. Plants reproducing by spores such as... View Article
Why Is Sexual Reproduction In Spirogyra An Advanced Feature?
This is because Spirogyra comprises physiologically differentiated sex organs. Spirogyra is a freshwater green alga belonging to Class Chlorophyceae. Conjugation... View Article
Why Have Angiosperms Primarily Dominated The Flora?
Angiosperms have the potential to adapt to diverse habitats. This is the main reason for their domination. They are highly... View Article
What Is Spermatophyta?
The seed producing plants are categorized under spermatophyta (phanerogams). These are the subsets of land plants (embryophytes) and include angiosperms... View Article
What Is Cycas?
Cycas are evergreen palm-like plants whose plant body is sporophytic differentiated into the leaves, stem and roots. Fusion of distinct... View Article
What Is Meant By Prothallus?
Typically, the prothallus is the gametophyte phase in the life of a fern or related pteridophytes. Rarely, this term may... View Article
What Is Siphonostele?
Siphonostele is a protostele or medullated protostele along with a central nonvascular pith lacking leaf gaps. Siphonostele is of two... View Article
Why Are Ferns Called Vascular Cryptogams?
Pteridophytes (Ferns and fern allies) are vascular plants dispersing spores. They are sometimes referred to as cryptograms as they neither... View Article
Which Is The Dominant Phase In Pteridophytes?
The sporophyte. The dominant phase of generation in their life cycle is the diploid sporophyte. However, the gametophytes of ferns... View Article
