11th Standard Syllabus & Materials

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11th Standard English Medium Biology (Botany) Subject Cell - The Unit of Life Creative 2 Mark Questions with Solution Part - I

Published on: 26/06/2021

QB365 provides detailed and simple solution for every Creative Questions in class 11 Biology Subject. It will helps to get more idea about question pattern in every Creative questions with solution.

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Std: 11th Standard - Biology

chapter: - Creative Questions

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Questions:

Generic 2

5 x 2 = 10

Which is the largest organelle in a cell? State its function.

What is the cell wall composition of the following organism?
(a) Fungi
(b) Bacteria
(c) Algae

Compare ocular micrometer and stage micrometer.

What is Glycocalyx;?

What lens used in TEM?

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Answers Key:

Generic 2

5 x 2 = 10

Nucleus. It controls all the cellular activities.

(a) Fungi - Chitin, fungal cellulose
(b) Bacteria - Peptidoglycon
(c) Algae - Cellulose, mannan, galactan

Ocular Micrometer:
It is fixed inside the eye piece lens. It is a thin transparent glassdisc where there are lines divided into 100 equal units. The scale has no value.
Stage Micrometer:
his is a slide with a line divided into 100 units. The line is about1mm. The distance between two adjacent lines is 10 urn. The known value of the stagemicrometer is transferred to the ocular micrometer, thereby the measurements can bemade using ocular micrometer.

1. The Carbohydrate molecules of cell membrane are short chain polysaccharides.
2.These are either bound with 'glycoproteins' or 'glycolipids' and form a 'glyocalyx'.

The fundamental principles of electron microscopy are similar to those of light microscopy, the major difference is that in electron microscope electro magnetic lens and not optical lenses are used.