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Formalin, Iodine, DDT, Lime - Biology

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प्रश्न

Formalin, Iodine, DDT, Lime

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उत्तर

Odd Term – Lime
Formalin, iodine and DDT are chemical substances.

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2016-2017 (March) Set 1

संबंधित प्रश्न

Complete the following paragraph by filling in the blank (1) to (5) with appropriate words:

To test a leaf for starch, the leaf is boiled in water to (1) _________.  It is then boiled in Methylated spirit to (2) ________. The leaf is dipped in warm water to soften it. It is placed in a petri dish, and (3) _____ solution is added. The region of the leaf which contains starch, turns (4) ________and the region while does not contain starch, turns (5) __________.


Fill in the blank:
Xanthophyll is ______ coloured pigment.


A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.

Describe step by step, how the candidate proceeded to test the leaf for the presence of starch?


How do non-green plants such as fungi and bacteria obtain their nourishment?


Explain the term NADP.


Choose the correct option.

A cell that lacks chloroplast does not ______.


During photosynthesis, ________ is produced and stored in the leaf.


The raw materials for photosynthesis are ______ and ______.


Study the diagram given below and fill in the blanks with suitable words:

In order to prove that carbon dioxide is necessary for

(a) ______, a potted plant is placed in dark for 48 hours to (b) ______ the leaves. A part of a leaf is inserted into a conical flask containing potassium hydroxide solution. This is to absorb (c) ______ from the flask. The plant is then placed in sunlight for a few hours. The experimental leaf is tested for starch. The part of the leaf that was inside the conical flask turns (d) ______, whereas the part of the left outside turns (e) ______ in colour.


Which of the following is not applicable to the process of photosynthesis?


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