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Making leaf collections
Collect young leaves of as many varieties of plants as possible. Place various layers of news- paper or blotting paper on a firm, smooth board. Next organize the leaves so they do not touch. Cover the leaves with other layers of newspaper or blotting paper. Place another board on top and then place various heavy stones or weights on the board. Keep the leaves in the press until they are thoroughly dried. When the leaves are removed from the press they may be neatly in order on note book pages and secured either with Scotch tape or small sections of gummed labels. The name of the leaf and any other exciting material can be recorded on the note book page.
Blunt or Non-penetrating Injury When body is struck by a blunt object such as steering wheel or blows to chest with blunt object. External injury may appear minor but the
Structure and Fate of Endosperm The cells of endosperm are usually thin-walled, large isodiametric and devoid of pits and store large amount of food materials. The starch alo
nervous system of vertebrates
Deinococcus radiodurans is a bacterium that was isolated from cooling ponds in and around nuclear power plants. It is highly resistant to ionizing radiation. Propose an hypothesis
Which structures of a flowering plant give rise to (a) potatoes, (b) the fleshy scales of an onion? (a) A potato is a tuber formed at the end of an underground stem (b) O
Q. What are the two major divisions of the chordate phylum? Chordates are divided into vertebrates and protochordates (urochordates and cephalochordates). Q. What are the d
Explain in brief about Polymers In comparison to metals and ceramics, polymers are weak and flexible. These are not popular as dental implant materials. Examples of polymeric m
Functions of Stomata The cuticle forms outermost surface of the leaf and offers resistance to the evaporation of water vapour and entry of carbon dioxide necessary for photosy
Class of Subphylum Uniramia - Symphyla Symphyla is yet other small myriapodous group that includes around 160 described species. These are also soil living forms and live in l
Placenta - Human Development We had said previous in the unit that in the second week of development a primitive uteroplacental circulation is established. Early in this stage
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