Kitab Nagri

What are Megasporrophylls   Each female cone is composed of spirally arranged scales called megasporophylls.   What can we say about the daytime department, training in which obliges either to a rented apartment, to create normal conditions for the student, or to living in a hostel, the regime of which does not at all contribute…

Definition of Inflorescence   A group of flowers having a special arrangement on the flowering axis is called inflorescence.   And what prospects does it open for people who cannot leave their family to rent a hotel room in Novosibirsk?, for example, and spend a whole month there, passing the session. And those whose employers…

Modification of Leaves   Leaf Tendrils:   In this case the leaf is modified into wire like coiled structure that helps the plant in climbing some objects as in pea.   Leaf Sgines:   For protection as in barberry.   Leaf Pitchers and Leaf Bladders:   These are modified forms of leaf used for catching…

Different Types of Leaves   Leaves are chief photosynthetic organ of plants. They have following two types:   Simple Leaves:   The leaves in which lamina is all in one piece are called simple leaves e.g. leaves of peepal, cotton etc.   Compound Leaves:   The leaves in which lamina is divided into a number…

Importance of Angiosperms   i) Many angiosperms are source of food e.g. wheat, rice, maize etc.   ii) Many important constituents of our food are obtained from angiosperms e.g. canola, mustard, coconut etc.   iii) Sugar and Gur is obtained from sugarcane.   iv) Many vegetables are obtained.   v) Many fruits are obtained.  …

Structure and Types of Stems in Angiosperm   Structure:   The part of a flower from where a leaf arises is called node. The distance between two nodes is called internode.   Types:-   There are following types of stems:   (i) Underground stem:   Most stems grow above the ground, but some grows underground.…

Roots and their Function in Angiosperms   Root is underground part of a plant.   Function:   They not only fix the plant firmly into the soil but also absorb water and essential salts for growth of plant.   Types:-   There are two types of roots, which are as under:   1 Tap Roots:…

Classes of Angiosperms   On the basis of cotyledons angiosperms are classified in two groups:   Monocots:   i) Monocot seeds have a single cotyledon (embryonic leaf)   ii) Endosperm is present in mature seeds.   iii) They are mostly herbaceous plants.   iv) They are narrow leaves.   v) Leaves have parallel veins.  …

Characteristics of Angiosperms   i) They are vascular plants that bear flowers.   ii) Their seeds are produced within the fruits.   iii) The fruit protect the developing seed.   iv) In addition to tracheids they have water-conducting structures called vessels in their xylem.   v) Their size range is 1mm to 300 feet (eucalyptus).…

Importance of Gymnosperms   i) They produce timber, which is excellent building material.   ii) Their wood is also used in making furniture.   iii) Many useful medicines are obtained from them.   iv) Many conifers yield turpentine and resins.   v) Some gymnosperms are grown in plants in homes, parks and along the roads.…