abida Archive

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