abida Archive

MODEL SUBJECTIVE QUESTIONS OF GYMNOSPERMS

MODEL SUBJECTIVE QUESTIONS OF GYMNOSPERMS 1.  Describe life cycle of Gymnosperms. 2.  Describe kingdoms of life. 3.  Give affinities of gymnosperms. 4.  Discuss structures of root, stem and leaves of Cycas with labelled diagrams. 5.  Describe structures and development of ma!, and female cones

EMBRYOLOG

EMBRYOLOG Early development of Capsella bursa–pastoris Following developmental changes take place in the embryo CopseIla bursa pastoris: I. First division of Oospore: Its oospore increases in size. It divides transversely in two cells. The cell toward the microphyll end is called suspensor cell. The

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

MUIlTIPLE CHOICE QUESTIONS OF PTERIDOPHYTA

MUIlTIPLE 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)

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