Botany

Sphenopsidaf – Occurrence & Structure

SPHENOPSIDAF TYPE  EQUISETUNI Occurrence The genus Equisetum has 25 species. It is world wide in distribution. They are most common in temperate regions. It generally grows in moist places. General structure The plant body is sporophyte. It is composed of rhizome, aerial branches, scale

LYCOPSIDA

LYCOPSIDA TYPE SELAGINELLA Occurrence Selaginella is a tropical plant. It has world wide distribution. It grows in damp forests. Some species occur in temperate regions. They grow in moist shady places. General structure The plant body is sporophyte. The body is divided into root,

PSILOPSIDA in botony for plants

PSILOPSIDA TYPE PSILOTUM Occurrence Psilotum is distributed in tropical and subtropical regions. It may grow as an epiphyte on the bark of trees. It also grows on soil where humus is abundantly available. General structure The plant body is sporophyte. The plant is a

Occurrence and evolution of Pteridophytes

Occurrence and evolution of Pteridophytes Pteridophyta is a group of ancient plants. They formed the dominant part of the earths during Palaeozoic and Mesozoic periods. Majority of Pteridophytes became extinct. They are preserved in the form of fossils or coal deposits. Only a few

Fill In Blanks Of Bryophytes

Fill In Blanks Of Bryophytes         1.  The basal swollen portion of the archegonium is called the …………. Algae show isomorphic alternation of generation. But bryophytes show_______ alternation of generation. Asexual reproduction takes place by _____ formation in algae. But it is absent in

Multiple Choice Questions of Bryophytes

Multiple Choice Questions of Bryophytes Androcytes give rise to: (a) Androgonia (b) antherozoids (c) Androcytes (d) None Antherozoid mother cells are: (a) Androgonia (b) antherozoids (c) Androcytes (d) None The basal swollen portion of the archegonium is: (a) Venter     (b) Neck        (c) Jacket     (d)

SHORT QUESTIONS OF BRYOPHYTES

SHORT QUESTIONS OF BRYOPHYTES 1.  Give occurrence of bryophytes. Ans:  Bryophytes are terrestrial plants. They mostly grow in moist and cold habitats. Some species can grow in dry places. But they depend on moisture for the reproductive stage. Bryophytes have world wide in distribution.

MODEL SUBJECTIVE QUESTION Of BRYOPHYTES

MODEL SUBJECTIVE QUESTION Of BRYOPHYTES Describe general structure and life cycle of bryophytes. Give classification of bryophyte. Discuss affinities of bryophytes. Discuss different views about the origin of bryophytes. Describe reproduction in Anthoceros. Describe structure and development of sporophyte in Anthoceros. Describe life cycle