Biology Concepts and Articles

We at Biologyboom.com provides all data about biology at one easy place in and understandable English. It will help researchers and students. Please share your questions in comments section below each article.


DEVELOPMENT OF ENDOSPERM

DEVELOPMENT OF ENDOSPERM The primary endosperm nucleus divides repeatedly. It forms polyploidy nutritive tissue called endosperm. There are two types of seeds for storage of food: b)  Endospertnic or albuminous seed: The endosperm supply food to the 0.–weloping embryo. Such seeds are called endospermic

MULTIPLE CHOICE QUESTIONS OF PTERIDOPHYTA

Multiple CHOICE QUESTIONS OF PTERIDOPHYTA 1.  The vascular tissue is confined to the central region of the stem forming: (a) Bundles   (b) stele        (c) Cortex      (d) Pcricycle 2.  The leaves which bear the sporangia are called: (a) sporophyl Is (b) Bract    (c) Cone        (d) Strobilus

MERISTEM

The tissues in which the cells are undifferentiated and capable of division are called meristem.  The activity of meristem Causes growth in plant. Meristem adds new cells continuously. The apices of roots, shoots and their lateral branches have meristems at their tips. It increases

SHORT QUESTIONS OF PTERIDOPHYTA

SHORT QUESTIONS OF PTERIDOPHYTA 1.  Give occurrence of pteridophytes. Ans: 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

NGIOSPERM

NGIOSPERM Syllabus: Introduction Occurrence Angiosperms are flowering plant. Their seeds are covered by fruits. Their fertile leaves bear ovules. The fertile leaves are folded and joined to from ovaries. The ovary is changed into a fruit after fertilization. There are 235,000 species of angiosperms

MODEL SUBJECTIVE QUESTIONS OF PTERIDOPHYTA

MODEL SUBJECTIVE QUESTIONS OF PTERIDOPHYTA 1.  Describe general structure and life cycle of Pteridophytes. 2.  Give classification of pteridophytes. 3.  Describe different types of stele in Pteridophytes. 4.  Describe vegetative structure of Psilotum. 5.  Describe reproduction and life cycle of Psilotum. 6.  Describe internal